421 lines
16 KiB
Python
421 lines
16 KiB
Python
import os.path
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from typing import Callable
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from PyQt5 import QtGui
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from qgis._core import QgsVectorLayer, QgsProject, QgsLayerTreeLayer, QgsPalLayerSettings, QgsVectorLayerSimpleLabeling
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from .pegelonline_dockwidget import PegelonlineDockWidget
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from .pomodules.po_history import PoHistory
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from .pomodules.po_stations import PoStations
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from .pomodules.po_stations_qgs import PoQgsStations
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from .pomodules.po_waterlevels_qgs import PoQgsCurrentW
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INFIX = ", ' - ', "
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# noinspection PyMethodMayBeStatic
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class PoRunner(object):
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def __init__(self, ui: PegelonlineDockWidget, iface):
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self.ui: PegelonlineDockWidget = ui
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self.iface = iface
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self.local_dir = os.path.dirname(os.path.realpath(__file__))
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# Layer Variablen
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self.stations = None
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self.waterlevels = None
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self.lines = None
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self.areas = None
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self.connect_basemap_signals()
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self.connect_stations_signals()
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self.connect_waterlevels_signals()
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self.connect_history_signals()
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self._historyLoadStations()
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# basemap -----------------------------------------------------------------
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def _basemapCreate(self, path, name, disconnect: Callable[[], None]) -> None | QgsVectorLayer:
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print("_basemapCreate: %s" % (name,))
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path = os.path.join(self.local_dir, "basemap", path)
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basemap = QgsVectorLayer(path, name, "ogr")
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if not basemap.isValid():
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print("_basemapCreate: QgsVectorLayer nicht gültig: path=%s, name=%s" % (path, name))
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return None
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# disconnect setzen
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# noinspection PyUnresolvedReferences
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basemap.willBeDeleted.connect(disconnect)
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# zur Instanz hinzufügen
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QgsProject.instance().addMapLayer(basemap, False)
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# zum LayerTree hinzufügen
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layer_tree = self.iface.layerTreeCanvasBridge().rootGroup()
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layer_tree.insertChildNode(-1, QgsLayerTreeLayer(basemap))
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return basemap
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# basemap signals ---------------------------------------------------------
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def connect_basemap_signals(self):
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print("connect_basemap_signals")
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self.ui.cbBasemapLines.toggled.connect(self.cbBasemapLinesToggled)
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self.ui.cbBasemapAreas.toggled.connect(self.cbBasemapAreasToggled)
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def cbBasemapLinesToggled(self):
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checked = self.ui.cbBasemapLines.isChecked()
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print("cbBasemapLinesToggled: %s" % (checked,))
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if self.lines is None and checked:
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self.lines = self._basemapCreate("waters.gpkg|layername=water_l", "Flüsse", self.disconnectBasemapLines)
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if self.lines is not None:
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self._layerSetVisible(self.lines, checked)
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self._layerRefresh(self.lines)
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def cbBasemapAreasToggled(self):
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checked = self.ui.cbBasemapAreas.isChecked()
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print("cbBasemapAreasToggled: %s" % (checked,))
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if self.areas is None and checked:
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self.areas = self._basemapCreate("waters.gpkg|layername=water_f", "Flächen", self.disconnectBasemapAreas)
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if self.areas is not None:
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self._layerSetVisible(self.areas, checked)
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self._layerRefresh(self.areas)
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def disconnectBasemapLines(self):
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print("disconnectBasemapLines")
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self.lines = None
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self.ui.cbBasemapLines.setChecked(False)
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def disconnectBasemapAreas(self):
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print("disconnectBasemapAreas")
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self.areas = None
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self.ui.cbBasemapAreas.setChecked(False)
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# stations ----------------------------------------------------------------
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def connect_stations_signals(self):
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print("connect_stations_signals")
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# noinspection DuplicatedCode
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self.ui.cbStationsVisible.toggled.connect(self.cbStationsVisibleToggled)
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self.ui.cbStationsName.toggled.connect(self.cbStationsNameToggled)
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self.ui.cbStationsNumber.toggled.connect(self.cbStationsNumberToggled)
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self.ui.cbStationsAgency.toggled.connect(self.cbStationsAgencyToggled)
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self.ui.cbStationsKm.toggled.connect(self.cbStationsKmToggled)
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self.ui.cbStationsWater.toggled.connect(self.cbStationsWaterToggled)
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def cbStationsVisibleToggled(self):
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visible = self.ui.cbStationsVisible.isChecked()
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print("cbStationsVisibleToggled: %s" % (visible,))
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if self.stations is None and visible:
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reader = PoQgsStations()
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features = reader.getStationsFeatures()
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self.stations = self._layerFromReader(reader.fields, reader.crs, features, "Stationen")
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self._layerAdd(self.stations, "styles/label_stations.qml", self.disconnectStations)
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if self.stations is not None:
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self._layerSetVisible(self.stations, visible)
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self._stationsUpdateLabeling()
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def cbStationsNameToggled(self):
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checked = self.ui.cbStationsName.isChecked()
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print("cbStationsNameToggled: %s" % (checked,))
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self._stationsUpdateLabeling()
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def cbStationsNumberToggled(self):
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checked = self.ui.cbStationsNumber.isChecked()
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print("cbStationsNumberToggled: %s" % (checked,))
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self._stationsUpdateLabeling()
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def cbStationsAgencyToggled(self):
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checked = self.ui.cbStationsAgency.isChecked()
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print("cbStationsAgencyToggled: %s" % (checked,))
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self._stationsUpdateLabeling()
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def cbStationsKmToggled(self):
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checked = self.ui.cbStationsKm.isChecked()
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print("cbStationsKmToggled: %s" % (checked,))
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self._stationsUpdateLabeling()
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def cbStationsWaterToggled(self):
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checked = self.ui.cbStationsWater.isChecked()
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print("cbStationsWaterToggled: %s" % (checked,))
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self._stationsUpdateLabeling()
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def disconnectStations(self):
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print("disconnectStations")
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self.stations = None
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self.ui.cbStationsVisible.setChecked(False)
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# noinspection DuplicatedCode
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def _stationsUpdateLabeling(self):
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print("_stationsUpdateLabeling")
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if self.stations is None:
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return
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fields = []
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if self.ui.cbStationsName.isChecked():
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fields.append("shortname")
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if self.ui.cbStationsNumber.isChecked():
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fields.append("number")
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if self.ui.cbStationsAgency.isChecked():
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fields.append("agency")
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if self.ui.cbStationsKm.isChecked():
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fields.append("km")
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if self.ui.cbStationsWater.isChecked():
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fields.append("water")
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self._layerUpdateLabeling(self.stations, fields)
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# waterlevels -------------------------------------------------------------
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def connect_waterlevels_signals(self):
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print("connect_waterlevels_signals")
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# noinspection DuplicatedCode
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self.ui.cbWaterlevelsVisible.toggled.connect(self.cbWaterlevelsVisibleToggled)
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self.ui.cbWaterlevelsName.toggled.connect(self.cbWaterlevelsNameToggled)
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self.ui.cbWaterlevelsNumber.toggled.connect(self.cbWaterlevelsNumberToggled)
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self.ui.cbWaterlevelsAgency.toggled.connect(self.cbWaterlevelsAgencyToggled)
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self.ui.cbWaterlevelsTimestamp.toggled.connect(self.cbWaterlevelsTimestampToggled)
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self.ui.cbWaterlevelsValue.toggled.connect(self.cbWaterlevelsValueToggled)
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self.ui.cbWaterlevelsMean.toggled.connect(self.cbWaterlevelsMeanToggled)
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self.ui.cbWaterlevelsAbsolute.toggled.connect(self.cbWaterlevelsAbsoluteToggled)
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def cbWaterlevelsVisibleToggled(self):
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visible = self.ui.cbWaterlevelsVisible.isChecked()
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print("cbWaterlevelsVisibleToggled: %s" % (visible,))
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if self.waterlevels is None and visible:
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reader = PoQgsCurrentW()
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features = reader.getCurrentWFeatures()
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self.waterlevels = self._layerFromReader(reader.fields, reader.crs, features, "Wasserstandinformationen")
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self._layerAdd(self.waterlevels, "styles/label_currentw.qml", self.disconnectWaterlevels)
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if self.waterlevels is not None:
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self._layerSetVisible(self.waterlevels, visible)
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self._waterlevelsUpdateLabeling()
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def cbWaterlevelsNameToggled(self):
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checked = self.ui.cbWaterlevelsName.isChecked()
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print("cbWaterlevelsNameName: %s" % (checked,))
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self._waterlevelsUpdateLabeling()
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def cbWaterlevelsNumberToggled(self):
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checked = self.ui.cbWaterlevelsNumber.isChecked()
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print("cbWaterlevelsNameNumber: %s" % (checked,))
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self._waterlevelsUpdateLabeling()
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def cbWaterlevelsAgencyToggled(self):
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checked = self.ui.cbWaterlevelsAgency.isChecked()
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print("cbWaterlevelsNameAgency: %s" % (checked,))
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self._waterlevelsUpdateLabeling()
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def cbWaterlevelsTimestampToggled(self):
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checked = self.ui.cbWaterlevelsTimestamp.isChecked()
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print("cbWaterlevelsTimestampToggled: %s" % (checked,))
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self._waterlevelsUpdateLabeling()
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def cbWaterlevelsValueToggled(self):
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checked = self.ui.cbWaterlevelsValue.isChecked()
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print("cbWaterlevelsValueToggled: %s" % (checked,))
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self._waterlevelsUpdateLabeling()
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def cbWaterlevelsMeanToggled(self):
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checked = self.ui.cbWaterlevelsMean.isChecked()
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print("cbWaterlevelsMeanToggled: %s" % (checked,))
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self._waterlevelsUpdateLabeling()
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def cbWaterlevelsAbsoluteToggled(self):
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checked = self.ui.cbWaterlevelsAbsolute.isChecked()
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print("cbWaterlevelsAbsoluteToggled: %s" % (checked,))
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self._waterlevelsUpdateLabeling()
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def disconnectWaterlevels(self):
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print("disconnectWaterlevels")
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self.waterlevels = None
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self.ui.cbWaterlevelsVisible.setChecked(False)
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# noinspection DuplicatedCode
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def _waterlevelsUpdateLabeling(self):
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if self.waterlevels is None:
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return
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fields = []
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if self.ui.cbWaterlevelsName.isChecked():
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fields.append("shortname")
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if self.ui.cbWaterlevelsNumber.isChecked():
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fields.append("number")
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if self.ui.cbWaterlevelsAgency.isChecked():
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fields.append("agency")
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if self.ui.cbWaterlevelsTimestamp.isChecked():
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fields.append("timestamp")
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if self.ui.cbWaterlevelsValue.isChecked():
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fields.append("value")
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if self.ui.cbWaterlevelsMean.isChecked():
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fields.append("stateMnwMhw")
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if self.ui.cbWaterlevelsAbsolute.isChecked():
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fields.append("stateNswHsw")
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self._layerUpdateLabeling(self.waterlevels, fields)
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# layers ------------------------------------------------------------------
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def _layerSetVisible(self, basemap: QgsVectorLayer, visible):
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print("_layerSetVisible: %s => %s" % (basemap.name, visible))
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layer_tree = QgsProject.instance().layerTreeRoot().findLayer(basemap.id())
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layer_tree.setItemVisibilityChecked(visible)
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def _layerFromReader(self, fields, crs, features, title) -> None | QgsVectorLayer:
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print("_layerFromReader")
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if features is None:
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return None
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layer_path = "Point?crs=%s" % (crs.authid(),)
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print("layer_path: " + layer_path)
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layer = QgsVectorLayer(layer_path, title, "memory")
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provider = layer.dataProvider()
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provider.addAttributes(fields)
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layer.updateFields()
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provider.addFeatures(features)
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for error in provider.errors():
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print("Fehler beim Hinzufügen von Features: " + error)
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layer.updateExtents()
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layer.commitChanges()
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if layer.isValid():
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return layer
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return None
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def _layerAdd(self, layer: QgsVectorLayer, styles_path: str, disconnect: Callable[[], None]):
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print("_layerShow")
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if layer is None:
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print("_layerShow: Übergebener Layer ist None")
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return
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# Styles laden
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layer.loadNamedStyle(os.path.join(self.local_dir, styles_path))
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# disconnect setzen
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layer.willBeDeleted.connect(disconnect)
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# zur Instanz hinzufügen
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QgsProject.instance().addMapLayer(layer, False)
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# zum LayerTree hinzufügen
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layer_tree = self.iface.layerTreeCanvasBridge().rootGroup()
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layer_tree.insertChildNode(0, QgsLayerTreeLayer(layer))
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def _layerUpdateLabeling(self, layer, fields):
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labeling = QgsVectorLayerSimpleLabeling(QgsPalLayerSettings())
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# Anführungszeichen um Feldnamen anbringen
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fields_quoted = ['"%s"' % (field,) for field in fields]
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# Feldnamen zu einem Minus-getrennten String zusammenbauen
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expression = ", ' - ', ".join(fields_quoted)
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settings = labeling.settings()
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settings.fieldName = "concat(" + expression + ")"
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settings.isExpression = True
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layer.setLabeling(QgsVectorLayerSimpleLabeling(settings))
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layer.setLabelsEnabled(True)
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self._layerRefresh(layer)
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def _layerRefresh(self, layer):
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print("_layerRefresh")
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if self.iface.mapCanvas().isCachingEnabled():
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layer.triggerRepaint()
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else:
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self.iface.mapCanvas().refresh()
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# history signals ---------------------------------------------------------
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def connect_history_signals(self):
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self.ui.slHistoryStation.currentTextChanged.connect(self.slHistoryStationChanged)
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self.ui.btnHistoryStationsRefresh.clicked.connect(self.btnHistoryStationsRefreshClicked)
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self.ui.inHistoryDays.valueChanged.connect(self.inHistoryDaysChanged)
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self.ui.btnHistoryGo.clicked.connect(self._historyLoadGraph)
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def btnHistoryStationsRefreshClicked(self):
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print("btnHistoryStationsRefreshClicked")
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self._historyLoadStations()
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def slHistoryStationChanged(self):
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print("slHistoryStationChanged: %s" % (self.ui.slHistoryStation.currentText(),))
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self._historyLoadGraph()
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def inHistoryDaysChanged(self):
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print("inHistoryDays: %s" % (self.ui.inHistoryDays.value(),))
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def _historyLoadGraph(self):
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station = self.ui.slHistoryStation.currentText()
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days = self.ui.inHistoryDays.value()
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print("_historyLoad: station=%s days=%s" % (station, days))
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self.ui.lbHistory.clear()
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self.ui.lbHistory.setText("Laden...")
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if station == '' or station is None:
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print("_historyLoad: Fehler: Ungültige Station: %s" % (station,))
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self.ui.lbHistory.setText("Bitte Station wählen...")
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return
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if days is None or days < 1 or days > 30:
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print("_historyLoad: Fehler: Ungültige Anzahl von Tagen: %s" % (days,))
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self.ui.lbHistory.setText("Bitte Tage [1, 30] wählen...")
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return
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history = PoHistory(station, days)
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image_data = history.download()
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if image_data is None or len(image_data) == 0:
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print("_historyLoad: Fehler: Keine Daten erhalten")
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self.ui.lbHistory.setText("Fehler beim Download!")
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return
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pixmap = QtGui.QPixmap()
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pixmap.loadFromData(image_data)
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self.ui.lbHistory.setPixmap(pixmap)
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self.ui.lbHistory.resize(pixmap.width(), pixmap.height())
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def _historyLoadStations(self):
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print("_init_history_signals")
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# merke die aktuelle Station, um sie wiederherzustellen
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bisherige_station = self.ui.slHistoryStation.currentText()
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self.ui.slHistoryStation.clear()
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stations = PoStations().getStations()
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if stations is None or len(stations) == 0:
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print("_init_history_signals: Fehler: Keine Stationen erhalten")
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return
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index = 0
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neuer_index = None
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for station in stations:
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shortname = station['attributes']['shortname']
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if shortname == bisherige_station:
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neuer_index = index
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self.ui.slHistoryStation.addItem(shortname)
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index += 1
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if neuer_index is not None:
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self.ui.slHistoryStation.setCurrentIndex(neuer_index)
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else:
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self.ui.slHistoryStation.setCurrentIndex(0)
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