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flurstuecks_finder_nrw.py
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flurstuecks_finder_nrw.py
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# -*- coding: utf-8 -*-
"""
/***************************************************************************
Flurstücksfinder NRW
A QGIS plugin
With this plugin Flurstücke can be searched on a WFS
Generated by Plugin Builder: http://g-sherman.github.io/Qgis-Plugin-Builder/
-------------------
begin : 2021-03-03
git sha : $Format:%H$
copyright : (C) 2021 by Kreis Viersen
email : open@kreis-viersen.de
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
"""
try:
from qgis.core import (
Qgis,
QgsBlockingNetworkRequest,
QgsCoordinateReferenceSystem,
QgsCoordinateTransform,
QgsField,
QgsFields,
QgsGml,
QgsMessageLog,
QgsPalLayerSettings,
QgsProject,
QgsProperty,
QgsPropertyCollection,
QgsTextBufferSettings,
QgsTextFormat,
QgsVectorLayer,
QgsVectorLayerSimpleLabeling,
QgsWkbTypes,
)
from qgis.gui import QgsHighlight, QgsMapToolEmitPoint
from qgis.PyQt import uic
from qgis.PyQt.QtCore import QCoreApplication, QSize, Qt, QUrl, QVariant, pyqtSignal
from qgis.PyQt.QtGui import QColor, QFont, QIcon, QPixmap
from qgis.PyQt.QtNetwork import QNetworkRequest
from qgis.PyQt.QtWidgets import (
QAction,
QApplication,
QDockWidget,
QHeaderView,
QMenu,
QMessageBox,
QTableWidgetItem,
QToolButton,
)
from qgis.utils import iface
import configparser
import hashlib
import json
import os
import re
import sys
import urllib
import webbrowser
from collections import OrderedDict
from io import BytesIO
from lxml import etree
except (ModuleNotFoundError, ImportError) as module_error:
error_string = f"[Flurstücksfinder NRW Fehler]: {module_error.args[0]} - Modul kann nicht importiert werden. Bitte überprüfen Sie, ob dieses Python-Modul installiert ist!"
QgsMessageLog.logMessage(error_string, "Flurstücksfinder NRW", level=Qgis.Critical)
iface.messageBar().pushMessage(error_string, level=Qgis.Critical)
sys.exit(error_string)
# Initialize Qt resources from file resources_rc.py
from .resources_rc import *
from .start_josm import *
qgis_version = Qgis.QGIS_VERSION.split("-")[0]
# For future releases to catch version differences
# QgsMessageLog.logMessage('Nachricht', 'Flurstücksfinder NRW', level=Qgis.Info)
# ---------------------------------------------------------------------------- #
# Class to initialize the plugin GUIs #
# ---------------------------------------------------------------------------- #
# Defines the GUI file for the dock widget
sys.path.append(os.path.dirname(__file__))
FORM_CLASS, _ = uic.loadUiType(
os.path.join(os.path.dirname(__file__), "flurstuecks_finder_nrw_dockwidget_base.ui")
)
class FlurstuecksFinderNRWDockWidget(QDockWidget, FORM_CLASS):
"""Initialize the dockwidget"""
closingPlugin = pyqtSignal()
keyPressed = pyqtSignal(int)
def __init__(self, parent=None):
"""Initializes the GUI of the dock widget"""
super(FlurstuecksFinderNRWDockWidget, self).__init__(parent)
self.setupUi(self)
def keyPressEvent(self, event):
super(FlurstuecksFinderNRWDockWidget, self).keyPressEvent(event)
self.keyPressed.emit(event.key())
def closeEvent(self, event):
# Removes any map highlights that may be present.
if FlurstuecksFinderNRW.highlight and FlurstuecksFinderNRW.highlight2:
iface.mapCanvas().scene().removeItem(FlurstuecksFinderNRW.highlight)
iface.mapCanvas().scene().removeItem(FlurstuecksFinderNRW.highlight2)
self.closingPlugin.emit()
event.accept()
# ---------------------------------------------------------------------------- #
# Class of the actual plugin #
# ---------------------------------------------------------------------------- #
class FlurstuecksFinderNRW:
"""Main plugin class"""
closingPlugin = pyqtSignal()
highlight = None
highlight2 = None
def __init__(self, iface):
"""Ininitalsiert the plugin class"""
# QGIS Interface
self.iface = iface
# Defines a layer variable for later use
self.layer = None
# QGIS map canvas
self.canvas = self.iface.mapCanvas()
# Initializes the plugin directory
self.plugin_dir = os.path.dirname(__file__)
# Initializes the ConfigParser object
self.config = configparser.ConfigParser()
# Initializes the config file
self.config_file = os.path.join(self.plugin_dir, "settings.ini")
# Writes by default the district Viersen as a district in the Config,
# if the file does not exist
if not os.path.isfile(self.config_file):
# Disabled to to issues in QGIS 3.20.1
self.config["DEFAULT"]["nrw"] = "True"
self.config["DEFAULT"]["katasteramt"] = "None"
with open(self.config_file, "w", encoding="UTF-8") as file:
self.config.write(file)
# Initialization of various variables
self.crs = None
self.crs_dict = {}
self.epsg = None
self.geom = None
self.nrw = True
self.extent = None
self.katasteramt = None
self.katasterdaten = None
self.cache_updated = False
self.wfs_prefix = None
# Reads out the config file and sets the variable area to the current value
# current value from the Conig file
self.config.read(self.config_file)
if self.config.has_option("", "nrw"):
self.nrw = self.config["DEFAULT"]["nrw"]
if self.nrw == "True":
self.nrw = True
elif self.nrw == "False":
self.nrw = False
if self.config.has_option("", "katasteramt"):
self.katasteramt = self.config["DEFAULT"]["katasteramt"]
if self.katasteramt == "None":
self.katasteramt = None
else:
self.katasteramt = None
# Initializes the path to the icons
self.icon_path = ":/plugins/flurstuecks_finder_nrw/icons/"
# Initializes the cache directory and creates it if necessary.
self.cache_dir = os.path.join(self.plugin_dir, "cache")
if not os.path.isdir(self.cache_dir):
try:
os.mkdir(self.cache_dir)
except OSError:
print(f"Verzeichnis {self.cache_dir} konnte nicht erstellt werden")
# Initializes a list of 'actions' that will be triggered,
# when the plugin buttons are pressed
self.actions = []
# Initializes a button in the toolbar as a dropdown menu
self.toolbar_button = QToolButton()
self.toolbar_button.setMenu(QMenu())
self.toolbar_button.setPopupMode(QToolButton.MenuButtonPopup)
self.menu = self.toolbar_button.menu()
self.tool_btn_action = self.iface.addToolBarWidget(self.toolbar_button)
# Initialize plugin menu entry with icon
self.menu2 = QMenu(self.tr("&Flurstücksfinder NRW"))
self.menu2.setIcon(QIcon(self.icon_path + "finder.png"))
self.iface.pluginMenu().addMenu(self.menu2)
# At initialization the plugin is not yet active
self.pluginIsActive = False
self.dockwidget = None
# Definition of a mouse click function (returns x and y)
self.mouse_click = QgsMapToolEmitPoint(self.canvas)
self.mouse_click.canvasClicked.connect(
lambda xy: self.SearchFlurstueck("clicked", xy)
)
self.maptool = self.mouse_click
self.maptool.setCursor(Qt.WhatsThisCursor)
# Variable for the first start of the plugin
self.first_start = True
def tr(self, message):
"""Function to translate"""
return QCoreApplication.translate("FlurstuecksFinderNRW", message)
def AddAction(
self,
icon_path,
text,
callback,
enabled_flag=True,
add_to_menu=True,
add_to_toolbar=True,
status_tip=None,
whats_this=None,
parent=None,
):
"""Inserts actions into the plugin"""
icon = QIcon(icon_path)
action = QAction(icon, text, parent)
action.triggered.connect(callback)
action.setEnabled(enabled_flag)
if status_tip is not None:
action.setStatusTip(status_tip)
if whats_this is not None:
action.setWhatsThis(whats_this)
if add_to_menu:
self.menu.addAction(action)
self.menu2.addAction(action)
self.actions.append(action)
return action
def initGui(self):
"""Creates the toolbar icons in the QGIS GUI and the dockwidget"""
# Action for opening the normal Flurstück finder GUI
self.AddAction(
icon_path=self.icon_path + "finder.png",
text=self.tr("Flurstücksfinder NRW öffnen"),
callback=self.run,
parent=self.iface.mainWindow(),
)
# Action for retrieving a Flurstück by click
self.AddAction(
icon_path=self.icon_path + "click.png",
text=self.tr("Flurstück mit Klick finden"),
callback=self.SearchFlurstueckClicked,
parent=self.iface.mainWindow(),
)
# Action for showing about message box
self.AddAction(
icon_path=self.icon_path + "info.png",
text=self.tr("Über Flurstücksfinder NRW"),
callback=self.about,
parent=self.iface.mainWindow(),
)
# Sets the default action for the button menu
# Normal search mask as default
default_action = [
a for a in self.actions if a.text() == "Flurstücksfinder NRW öffnen"
][0]
self.toolbar_button.setDefaultAction(default_action)
# Actions and buttons have been added, now
# defines the dock widget as an object
if self.dockwidget is None:
self.dockwidget = FlurstuecksFinderNRWDockWidget()
# Text from Gemarkung combo box into text field
self.dockwidget.cmb_gemarkung_name.activated.connect(
self.MatchComboBoxesTextFields
)
# Text from Gemarkung key combo box into text field
self.dockwidget.cmb_gemarkung_id.activated.connect(
self.MatchComboBoxesTextFields
)
# Text from Fluren combo box into text field
self.dockwidget.cmb_flur_nr.activated.connect(self.MatchComboBoxesTextFields)
# Text from Flurstücke combo box into text field
self.dockwidget.cmb_flurstueck.activated.connect(self.MatchComboBoxesTextFields)
# Actions that will be executed when the index of the
# comboboxes changes (comparison of the name of the
# Gemarkungsname with the Gemarkungs-Schlüssel )
self.dockwidget.cmb_gemarkung_name.currentIndexChanged.connect(
lambda: self.dockwidget.cmb_gemarkung_id.setCurrentIndex(
self.dockwidget.cmb_gemarkung_id.findText(
re.sub(
"[^0-9]", "", self.dockwidget.cmb_gemarkung_name.currentText()
),
Qt.MatchFixedString,
)
)
)
self.dockwidget.cmb_gemarkung_id.currentIndexChanged.connect(
lambda: self.dockwidget.cmb_gemarkung_name.setCurrentIndex(
self.dockwidget.cmb_gemarkung_name.findText(
self.dockwidget.cmb_gemarkung_id.currentText(), Qt.MatchContains
)
)
)
# Actions when the combo boxes are clicked/activated
# When Gemarkung is activated, the combo box for fluren is filled.
self.dockwidget.cmb_katasteramt.currentIndexChanged.connect(self.SetKatasteramt)
self.dockwidget.cmb_katasteramt.currentIndexChanged.connect(
self.FillComboBoxGemarkung
)
self.dockwidget.cmb_gemarkung_name.currentIndexChanged.connect(
self.FillComboBoxFluren
)
self.dockwidget.cmb_flur_nr.currentIndexChanged.connect(
self.FillComboBoxFlurstuecke
)
# Button for Flurstück search via Flurstückkennzeichen (Gemarkung-Flur-Flurstück)
self.dockwidget.btn_suchen_flurstueck_nr.clicked.connect(
lambda: self.SearchFlurstueck("flstkennz", None)
)
# Button for Flurstück search via ALKIS ID
self.dockwidget.btn_suchen_alkis_id.clicked.connect(
lambda: self.SearchFlurstueck("alkisid", None)
)
# Button for Flurstück search via Flurstückkennzeichen
self.dockwidget.btn_suchen_flstkennzlang.clicked.connect(
lambda: self.SearchFlurstueck("flstkennzlang", None)
)
# Search the Flurstück if the last combobox is activated
self.dockwidget.cmb_flurstueck.activated.connect(
lambda: self.SearchFlurstueck("flstkennz", None)
)
# button adds or deletes the Flurstück polygon
self.dockwidget.btn_add_flurstueck.clicked.connect(
lambda: self.AddFlurstueckLayer(self.layer)
)
# button opens the geoportal Niederrhein
self.dockwidget.btn_open_portal.clicked.connect(
lambda: self.OpenBrowser("portal")
)
# button opens JOSM
self.dockwidget.btn_open_josm.clicked.connect(lambda: self.OpenBrowser("josm"))
# button opens JOSM
self.dockwidget.btn_open_id.clicked.connect(lambda: self.OpenBrowser("id"))
# Execute the search when the return key is pressed
self.dockwidget.keyPressed.connect(self.KeyPressed)
self.dockwidget.txt_gemarkung_flur_flurstueck.textChanged.connect(
lambda text: self.TextFieldChanged(
text, self.dockwidget.btn_suchen_flurstueck_nr
)
)
self.dockwidget.txt_alkis_id.textChanged.connect(
lambda text: self.TextFieldChanged(
text, self.dockwidget.btn_suchen_alkis_id
)
)
self.dockwidget.txt_flstkennzlang.textChanged.connect(
lambda text: self.TextFieldChanged(
text, self.dockwidget.btn_suchen_flstkennzlang
)
)
if self.nrw is False:
self.dockwidget.btn_open_portal.setToolTip(
"Öffnet die Flurstücks-Position im Geoportal Niederrhein"
)
else:
self.dockwidget.btn_open_portal.setToolTip(
"Öffnet die Flurstücks-Position in TIM-Online"
)
# QTableWidget custom action when right-clicking with the mouse, calls a function
self.dockwidget.tbl_flurstueck.setContextMenuPolicy(Qt.CustomContextMenu)
self.dockwidget.tbl_flurstueck.customContextMenuRequested.connect(
self.CopyTableCell
)
# ---------------------------------------------------------------------------- #
def onClosePlugin(self):
"""Deletes all items of the plugin when it is closed"""
self.dockwidget.closingPlugin.disconnect(self.onClosePlugin)
self.first_start = True
self.pluginIsActive = False
def unload(self):
"""Removes the menu items and the buttons"""
for action in self.actions:
self.iface.removePluginMenu(self.tr("&Flurstücksfinder NRW"), action)
self.iface.removeToolBarIcon(action)
self.iface.removeToolBarIcon(self.tool_btn_action)
self.menu2.deleteLater()
def RemoveHighlights(self):
"""This removes previously created map highlights (red markers)"""
if hasattr(FlurstuecksFinderNRW, "highlight"):
self.iface.mapCanvas().scene().removeItem(self.highlight)
self.iface.mapCanvas().scene().removeItem(self.highlight2)
# ---------------------------------------------------------------------------- #
def KeyPressed(self, key):
"""Perform the search action of Return key is pressed"""
# Check whether enter or return key is pressed
if key in [Qt.Key_Return, Qt.Key_Enter]:
if (
len(self.dockwidget.txt_alkis_id.text()) != 0
and self.dockwidget.txt_alkis_id.hasFocus()
):
self.SearchFlurstueck("alkisid", None)
elif (
len(self.dockwidget.txt_gemarkung_flur_flurstueck.text()) != 0
and self.dockwidget.txt_gemarkung_flur_flurstueck.hasFocus()
):
self.SearchFlurstueck("flstkennz", None)
elif (
len(self.dockwidget.txt_flstkennzlang.text()) != 0
and self.dockwidget.txt_flstkennzlang.hasFocus()
):
self.SearchFlurstueck("flstkennzlang", None)
def PushMessage(self, message, level):
self.iface.messageBar().clearWidgets()
self.iface.messageBar().pushMessage(message, level=level, duration=3)
self.iface.mainWindow().repaint()
def ShowMessage(self, art, meldung):
"""Creates a message for the user"""
mb = QMessageBox()
mb.setWindowFlags(Qt.WindowStaysOnTopHint)
if art == "Frage":
mb.setWindowTitle("Frage")
mb.setIcon(QMessageBox.Question)
mb.addButton("Ja", mb.AcceptRole)
mb.addButton("Nein", mb.RejectRole)
elif art == "Fehler":
mb.setWindowTitle("Fehler")
mb.setIcon(QMessageBox.Critical)
mb.addButton("OK", mb.AcceptRole)
elif art == "Warning":
mb.setWindowTitle("Flurstücksfinder NRW Warnung")
mb.setText(f"Es ist ein Fehler aufgetreten!\n\n{meldung}")
mb.setIcon(QMessageBox.Warning)
mb.addButton("Okay", mb.AcceptRole)
elif art == "Info":
mb.setWindowTitle("Flurstücksfinder NRW Info")
mb.setIcon(QMessageBox.Information)
mb.addButton("Okay", mb.AcceptRole)
mb.setText(meldung)
return mb
# ---------------------------------------------------------------------------- #
# Functions for buttons #
# ---------------------------------------------------------------------------- #
def InitRadioButtons(self):
"""Reads out the config file and sets the radio buttons"""
check_button = None
self.dockwidget.rb_group.buttonToggled.connect(self.RadioButtonChanged)
if self.nrw is False:
if self.katasteramt:
check_button = [
b
for b in self.dockwidget.rb_group.buttons()
if b.text() == self.katasteramt
]
self.dockwidget.cmb_katasteramt.setEnabled(False)
else:
check_button = [
b for b in self.dockwidget.rb_group.buttons() if b.text() == "NRW"
]
self.dockwidget.cmb_katasteramt.setEnabled(True)
if check_button is not None:
check_button = check_button[0]
check_button.setChecked(True)
self.dockwidget.rb_group.setExclusive(True)
def RadioButtonChanged(self, button, checked):
"""Checks the setting of the radio buttons
and writes the setting to a config file"""
self.ResetComboBoxes()
self.ResetComboBoxesIndex()
self.ClearTextFields()
if checked is True and button.text() != "NRW":
self.nrw = False
self.katasteramt = button.text()
self.config["DEFAULT"]["nrw"] = "False"
self.config["DEFAULT"]["katasteramt"] = self.katasteramt
self.dockwidget.cmb_katasteramt.setEnabled(False)
self.dockwidget.cmb_katasteramt.setCurrentIndex(-1)
self.dockwidget.id_suchen_gbox.setTitle(f"ID in {self.katasteramt} suchen")
self.dockwidget.flurstueck_suchen_gbox.setTitle(
f"Flurstück in {self.katasteramt} suchen"
)
self.ChangePushButtonsIcons("masterportal")
self.FillComboBoxGemarkung()
elif checked is True and button.text() == "NRW":
self.nrw = True
self.config["DEFAULT"]["nrw"] = "True"
self.dockwidget.cmb_katasteramt.setEnabled(True)
self.dockwidget.id_suchen_gbox.setTitle("ID NRW-weit suchen")
self.dockwidget.flurstueck_suchen_gbox.setTitle(
f"Bitte Katasteramt im Reiter Einstellung wählen"
)
self.ChangePushButtonsIcons("timonline")
self.FillComboBoxKatasteramt()
if checked is True:
self.GetCRS()
if os.path.isfile(self.config_file):
with open(self.config_file, "w+", encoding="UTF-8") as file:
self.config.write(file)
def ChangePushButtonsIcons(self, icon):
"""Depending on whether a Flurstück polygon
has already been added, the icon will be changed"""
if icon == "remove":
iconRemove = QIcon()
iconRemove.addPixmap(QPixmap(os.path.join(self.icon_path, "remove.png")))
self.dockwidget.btn_add_flurstueck.setIcon(iconRemove)
self.dockwidget.btn_add_flurstueck.setIconSize(QSize(25, 25))
self.dockwidget.btn_add_flurstueck.setToolTip(
"Durch Klicken wird das Flurstückpolygon entfernt"
)
elif icon == "add":
iconAdd = QIcon()
iconAdd.addPixmap(QPixmap(os.path.join(self.icon_path, "add.png")))
self.dockwidget.btn_add_flurstueck.setIcon(iconAdd)
self.dockwidget.btn_add_flurstueck.setIconSize(QSize(25, 25))
self.dockwidget.btn_add_flurstueck.setToolTip(
"Durch Klicken wird das Flurstückpolygon hinzugefügt"
)
elif icon == "masterportal":
self.dockwidget.btn_open_portal.setToolTip(
"Öffnet das Flurstück im Geoportal Niederrhein"
)
elif icon == "timonline":
self.dockwidget.btn_open_portal.setToolTip(
"Öffnet das Flurstück in TIM-Online"
)
def EnablePushButtons(self):
"""Activates the push buttons"""
# Flurstücke can only be added if they have been searched for successfully
self.dockwidget.btn_add_flurstueck.setEnabled(True)
# Opens the geoportal Niederhein
self.dockwidget.btn_open_portal.setEnabled(True)
# The Flurstück info is only shown when the Fluurstück was searched for
self.dockwidget.tabWidget.setTabEnabled(1, True)
# JOSM can only be used when a Flurstück has been searched for
josm_app_path, josm_cfg_path = StartJosm(self).josmSearchPath()
if josm_app_path and josm_cfg_path:
if os.path.isfile(josm_app_path) and os.path.isfile(josm_cfg_path):
self.dockwidget.btn_open_josm.setEnabled(True)
# Opens the OSM iD Editor
self.dockwidget.btn_open_id.setEnabled(True)
def DisablePushButtons(self):
"""Disables the push buttons"""
# Flurstücke can only be added if they have been searched for successfully
self.dockwidget.btn_add_flurstueck.setEnabled(False)
# JOSM can only be used when a Flurstück has been searched for
self.dockwidget.btn_open_josm.setEnabled(False)
# Opens the geoportal Niederhein
self.dockwidget.btn_open_portal.setEnabled(False)
# The Flurstück info is only shown when the Flurstück is searched for
self.dockwidget.tabWidget.setTabEnabled(1, False)
# Opens the OSM iD Editor
self.dockwidget.btn_open_id.setEnabled(False)
# Disables to search buttons
self.dockwidget.btn_suchen_alkis_id.setEnabled(False)
self.dockwidget.btn_suchen_flurstueck_nr.setEnabled(False)
self.dockwidget.btn_suchen_flstkennzlang.setEnabled(False)
# ---------------------------------------------------------------------------- #
# Functions for direct interaction with the WFS #
# ---------------------------------------------------------------------------- #
def GetBaseURL(self):
"""Used to select the region to address the respective WFS service"""
base_url = None
wfs_arg = ""
katasteramt = ""
if self.nrw is False:
if self.katasteramt:
katasteramt = self.katasteramt
if "Krefeld" in katasteramt:
wfs_arg = "s"
elif (
"Wesel" in katasteramt
or "Viersen" in katasteramt
or "Kleve" in katasteramt
):
wfs_arg = "k"
katasteramt = katasteramt.replace("Kreis ", "").replace("Stadt ", "")
katasteramt = katasteramt[0:3].lower()
self.wfs_prefix = wfs_arg + katasteramt
base_url = (
"https://geoservices.krzn.de/security-proxy/"
f"services/wfs_{self.wfs_prefix}_alkis_adv_vereinfacht?"
)
elif self.nrw is True:
base_url = "https://www.wfs.nrw.de/geobasis/wfs_nw_alkis_vereinfacht?"
return base_url
def GetCRS(self):
"""Get available CRS from WFS"""
# WFS Request URL
base_url = self.GetBaseURL()
self.crs_dict.clear()
param = {"service": "WFS", "version": "2.0.0", "request": "GetCapabilities"}
if base_url is not None:
url = base_url + urllib.parse.unquote_plus(urllib.parse.urlencode(param))
results = None
request = QgsBlockingNetworkRequest()
request.get(QNetworkRequest(QUrl(url)), True)
reply = request.reply()
if reply.attribute(QNetworkRequest.HttpStatusCodeAttribute) == 200:
try:
tree = etree.parse(BytesIO(reply.content()))
root = tree.getroot()
nsmap = root.nsmap
if None in nsmap.keys():
del nsmap[None]
results = root.find(
".//ows:Parameter[@name='srsName']/ows:AllowedValues", nsmap
)
except:
mb = self.ShowMessage(
"Fehler", "Konnte verfügbare KBS vom WFS nicht ermitteln!"
)
mb.setDetailedText(
"Bitte GetCapabilities-Dokument überprüfen:\n\n" + url
)
mb.exec()
if results is not None:
results = results.getchildren()
results = [result.text for result in results]
else:
mb = self.ShowMessage(
"Fehler", "Konnte verfügbare KBS vom WFS nicht ermitteln!"
)
mb.setDetailedText("Die Anfrage an folgende URL schlug fehl:\n\n" + url)
mb.exec()
if results:
for idx, result in enumerate(results):
epsg = result.split("def:crs:")[1].replace("::", ":")
self.crs_dict[idx] = {"uri": result, "epsg": epsg}
def CheckCRS(self):
"""Checks the CRS"""
crs_list = {}
crs = None
# Checks current CRS
crs = QgsProject.instance().crs().authid()
# If a CRS is defined, then it is checked whether this is contained in the list
# of the allowed WFS CRS, if not: error message
if crs and self.crs_dict:
crs_list = [i.get("epsg") for i in self.crs_dict.values()]
if crs in [i.get("epsg") for i in self.crs_dict.values()]:
self.crs = [
i.get("uri") for i in self.crs_dict.values() if i.get("epsg") == crs
][0]
self.epsg = [
i.get("epsg").strip("EPSG:")
for i in self.crs_dict.values()
if i.get("epsg") == crs
][0]
else:
crs_string = "\n".join(crs_list)
mb = self.ShowMessage(
"Info",
f'Ihr derzeitig ausgewähltes KBS "{crs}" ist nicht mit dem Flurstücksfinder NRW kompatibel',
)
mb.setDetailedText("Erlaubte KBS: \n" + crs_string)
mb.exec()
def GetURL(self, filter, **kwargs):
"""Method to create the WFS URL. The arguments are passed to the method
and filters are set according to the arguments"""
# WFS Request URL
self.CheckCRS()
base_url = self.GetBaseURL()
if base_url is not None:
param = {
"service": "WFS",
"version": "2.0.0",
"request": "GetFeature",
"srsname": self.crs,
}
if self.nrw is True:
param["version"] = "1.1.0"
if filter == "flurstuecke":
if self.nrw is False:
param["typename"] = f"gis:{self.wfs_prefix}_alkis_adv_flurstueckpkt"
param["propertyname"] = "FLSTNRZAE,FLSTNRNEN,FLSTKENNZ"
else:
param["typename"] = "ave:FlurstueckPunkt"
param["propertyname"] = "ave:flstnrnen"
flur_id = None
gem_nr = kwargs["gem_id"]
flur_nr = kwargs["flur_nr"]
if gem_nr and flur_nr:
flur_nr = flur_nr.zfill(3)
gem_id = "05" + gem_nr
flur_id = gem_id + flur_nr
if flur_id:
if self.nrw is False:
param["filter"] = (
"<Filter>"
"<PropertyIsEqualTo>"
"<ValueReference>FLURSCHL</ValueReference>"
f"<Literal>{flur_id}</Literal>"
"</PropertyIsEqualTo>"
"</Filter>"
)
else:
param["filter"] = (
'<Filter xmlns="http://www.opengis.net/ogc" '
'xmlns:ave="http://repository.gdi-de.org/schemas/adv/produkt/alkis-vereinfacht/2.0">'
"<And>"
"<PropertyIsEqualTo>"
"<PropertyName>ave:gemaschl</PropertyName>"
f"<Literal>{gem_id}</Literal>"
"</PropertyIsEqualTo>"
"<PropertyIsEqualTo>"
"<PropertyName>ave:flurschl</PropertyName>"
f"<Literal>{flur_id}</Literal>"
"</PropertyIsEqualTo>"
"</And>"
"</Filter>"
)
elif filter == "oid":
oid = kwargs["id"]
if self.nrw is False:
param["typename"] = f"gis:{self.wfs_prefix}_alkis_adv_flurstueck"
param["filter"] = (
"<Filter>"
"<PropertyIsEqualTo>"
"<ValueReference>IDFLURST</ValueReference>"
f"<Literal>{oid}</Literal>"
"</PropertyIsEqualTo>"
"</Filter>"
)
else:
param["typename"] = "ave:Flurstueck"
param["Filter"] = (
'<Filter xmlns="http://www.opengis.net/ogc" '
'xmlns:ave="http://repository.gdi-de.org/schemas/adv/produkt/alkis-vereinfacht/2.0">'
"<PropertyIsEqualTo>"
"<PropertyName>ave:idflurst</PropertyName>"
f"<Literal>{oid}</Literal>"
"</PropertyIsEqualTo>"
"</Filter>"
)
elif filter == "flstkennz":
flstkennz = kwargs["id"]
if self.nrw is False:
param["typename"] = f"gis:{self.wfs_prefix}_alkis_adv_flurstueck"
param["filter"] = (
"<Filter>"
"<PropertyIsEqualTo>"
"<ValueReference>FLSTKENNZ</ValueReference>"
f"<Literal>{str(flstkennz)}</Literal>"
"</PropertyIsEqualTo>"
"</Filter>"
)
else:
param["typename"] = "ave:Flurstueck"
param["filter"] = (
'<Filter xmlns="http://www.opengis.net/ogc" '
'xmlns:ave="http://repository.gdi-de.org/schemas/adv/produkt/alkis-vereinfacht/2.0">'
"<PropertyIsEqualTo>"
"<PropertyName>ave:flstkennz</PropertyName>"
f"<Literal>{str(flstkennz)}</Literal>"
"</PropertyIsEqualTo>"
"</Filter>"
)
elif filter == "clicked":
x, y = kwargs["x"], kwargs["y"]
if self.nrw is False:
param["typename"] = f"gis:{self.wfs_prefix}_alkis_adv_flurstueck"
if x and y:
param["filter"] = (
"<fes:Filter>"
"<fes:Intersects>"
"<fes:ValueReference>GEOMETRY</fes:ValueReference>"
f'<gml:Point srsName="{self.crs}">'
f"<gml:coordinates>{x},{y}</gml:coordinates>"
"</gml:Point>"
"</fes:Intersects>"
"</fes:Filter>"
)
else:
param["typename"] = "ave:Flurstueck"
if x and y:
param["filter"] = (
"<Filter "
'xmlns="http://www.opengis.net/ogc" '
'xmlns:ave="http://repository.gdi-de.org/schemas/adv/produkt/alkis-vereinfacht/2.0" '
'xmlns:fes="http://www.opengis.net/fes/2.0" '
'xmlns:gml="http://www.opengis.net/gml">'
"<Intersects>"
"<PropertyName>ave:geometrie</PropertyName>"
f'<gml:Point srsName="{self.crs}">'
f"<gml:coordinates>{x},{y}</gml:coordinates>"
"</gml:Point>"
"</Intersects>"
"</Filter>"
)
url = base_url + urllib.parse.unquote_plus(urllib.parse.urlencode(param))
return url
def SetKatasteramt(self):
"""If NRW is activated the Kommune is set by the current text of the combobox"""
# if idx != -1 and self.nrw is True and self.first_start is False:
if len(self.dockwidget.cmb_katasteramt) > 1:
self.katasteramt = self.dockwidget.cmb_katasteramt.currentText()
self.dockwidget.flurstueck_suchen_gbox.setTitle(
f"Flurstück in {self.katasteramt} suchen"
)
if self.katasteramt:
self.config["DEFAULT"]["katasteramt"] = self.katasteramt
with open(self.config_file, "w+", encoding="UTF-8") as file:
self.config.write(file)
def GetFlurstuecke(self):
"""Queries Flurstücke from WFS and saves them to a dict"""
gem = self.dockwidget.cmb_gemarkung_id.currentText()
flur = self.dockwidget.cmb_flur_nr.currentText()
url = self.GetURL(filter="flurstuecke", gem_id=gem, flur_nr=flur)
flurstuecke = {}
flurstuecke_layer = None
if url is not None:
if self.nrw is False:
fieldnames = ["FLSTNRZAE", "FLSTNRNEN", "FLSTKENNZ"]
typename = f"gis:{self.wfs_prefix}_alkis_adv_flurstueckpkt"
geometry = "GEOMETRY"
else:
fieldnames = ["flstnrzae", "flstnrnen", "flstkennz"]
typename = "ave:FlurstueckPunkt"
geometry = "geometrie"
fields = QgsFields()
for fieldname in fieldnames:
fields.append(QgsField(fieldname, QVariant.String, "", 100, 0))
gml = None
gml = QgsGml(typename, geometry, fields)
wfs_request = gml.getFeaturesUri(url)
parsed_features = gml.featuresMap()
if wfs_request[0] == 0:
flurstuecke_layer = QgsVectorLayer(
f"point?crs=EPSG:{self.epsg}", "flurstuecke_layer", "memory"
)
flurstuecke_layer_data_prov = flurstuecke_layer.dataProvider()
flurstuecke_layer_data_prov.addAttributes(fields.toList())
flurstuecke_layer.updateFields()
for i in range(len(parsed_features)):
flurstuecke_layer_data_prov.addFeature(parsed_features[i])
flurstuecke_layer.commitChanges()
flurstuecke_layer.updateExtents()
if flurstuecke_layer is not None:
if flurstuecke_layer.isValid():
features = flurstuecke_layer.getFeatures()
for idx, flurstueck in enumerate(features):
flst_zae = flurstueck[fieldnames[0]]
flstkennz = flurstueck[fieldnames[2]]
flst_nen = ""
flstnr = flst_zae
if flurstuecke_layer.fields().indexFromName(fieldnames[1]) != -1:
if flurstueck[fieldnames[1]]:
flst_nen = "/" + str(flurstueck[fieldnames[1]])
flstnr = flst_zae + flst_nen
flurstuecke[idx] = {
"Flurstückkennzeichen": flstkennz,
"Flurstuecksnummer": flstnr,
}
return flurstuecke
# ---------------------------------------------------------------------------- #
# Functions around comboboxes and textfields #
# ---------------------------------------------------------------------------- #
def FillComboBoxKatasteramt(self):
"""Fills the katasteramt combobox"""
katasteraemter = None
if self.nrw is True:
if len(self.dockwidget.cmb_katasteramt) == 0:
if self.katasterdaten:
katasteraemter = self.katasterdaten.keys()
if katasteraemter:
self.dockwidget.cmb_katasteramt.blockSignals(True)
self.dockwidget.cmb_katasteramt.clear()
self.dockwidget.cmb_katasteramt.addItems(katasteraemter)
self.dockwidget.cmb_katasteramt.setCurrentIndex(-1)
self.dockwidget.cmb_katasteramt.blockSignals(False)
def FillComboBoxGemarkung(self):
"""Fills the combo boxes according to the arguments"""
self.dockwidget.cmb_gemarkung_name.clear()
self.dockwidget.cmb_gemarkung_id.clear()
self.ClearTextFields()
gemarkungen = None
if self.nrw is True and self.dockwidget.cmb_katasteramt.currentIndex() != -1:
self.katasteramt = self.dockwidget.cmb_katasteramt.currentText()
elif (
self.nrw is False
and self.dockwidget.rb_group.checkedButton().text() != "NRW"
):
self.katasteramt = self.dockwidget.rb_group.checkedButton().text()
else:
self.katasteramt = None
if self.katasteramt and self.katasterdaten:
gemarkungen = self.katasterdaten.get(self.katasteramt.replace("Stadt ", ""))
gemarkungen_name = gemarkungen.keys()
gemarkungen_ids = sorted(
[i.get("schluessel") for i in gemarkungen.values()]
)
self.dockwidget.cmb_gemarkung_name.blockSignals(True)
self.dockwidget.cmb_gemarkung_id.blockSignals(True)
self.dockwidget.cmb_gemarkung_name.addItems(gemarkungen_name)
self.dockwidget.cmb_gemarkung_id.addItems(gemarkungen_ids)
self.dockwidget.cmb_gemarkung_name.setCurrentIndex(-1)
self.dockwidget.cmb_gemarkung_id.setCurrentIndex(-1)
self.dockwidget.cmb_gemarkung_name.blockSignals(False)
self.dockwidget.cmb_gemarkung_id.blockSignals(False)
def FillComboBoxFluren(self):
"""Fills the combobox of the flur id"""
self.dockwidget.cmb_flur_nr.clear()
self.dockwidget.cmb_flur_nr.clear()
fluren = None
if self.nrw is True and self.dockwidget.cmb_katasteramt.currentIndex() != -1:
self.katasteramt = self.dockwidget.cmb_katasteramt.currentText()
elif (
self.nrw is False
and self.dockwidget.rb_group.checkedButton().text() != "NRW"
):
self.katasteramt = self.dockwidget.rb_group.checkedButton().text()
else:
self.katasteramt = None
gemarkung = self.dockwidget.cmb_gemarkung_name.currentText()
if self.katasterdaten and gemarkung and self.katasteramt:
fluren = (
self.katasterdaten.get(self.katasteramt.replace("Stadt ", ""))
.get(gemarkung)
.get("fluren")
)
self.dockwidget.cmb_flur_nr.blockSignals(True)
self.dockwidget.cmb_flur_nr.clear()
self.dockwidget.cmb_flurstueck.clear()
self.dockwidget.cmb_flur_nr.addItems(fluren)
self.dockwidget.cmb_flur_nr.setCurrentIndex(-1)
self.dockwidget.cmb_flur_nr.blockSignals(False)
def FillComboBoxFlurstuecke(self):
"""Fills the Flurstücknummer combobox"""
self.dockwidget.cmb_flurstueck.clear()
flurstuecke = {}
flurstuecke_nr = []
if self.dockwidget.cmb_flur_nr.currentIndex() != -1:
# Obtain the Flurstück data from the WFS
flurstuecke = self.GetFlurstuecke()