502 lines
21 KiB
Python
502 lines
21 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 PyQt5.QtWidgets import QAction
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from qgis._core import QgsVectorLayer, QgsProject, QgsLayerTreeLayer, QgsPalLayerSettings, QgsVectorLayerSimpleLabeling
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from .map_tips import WATERLEVELS_MAP_TIPS, STATIONS_MAP_TIPS, BASEMAP_MAP_TIPS
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from .pegelonline_dockwidget import PegelonlineDockWidget
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from .pegelonline_dockwidget_graph import PegelonlineDockWidgetGraph
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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 PoStationsQgs
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from .pomodules.po_waterlevels_qgs import PoWaterlevelsQgs
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# noinspection PyMethodMayBeStatic
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class PoRunner(object):
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def __init__(self, ui: PegelonlineDockWidget, graph: PegelonlineDockWidgetGraph, iface):
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self.ui = ui
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self.graph = graph
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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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# während dem Aktualisieren der Stationsliste treten change-signale auf, die werden so abgefangen
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self._history_stations_lock = True
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# Layer
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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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# Standard Aktionen verbinden
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self.ui.btnZoomFullExtent.setDefaultAction(iface.actionZoomFullExtent())
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self.ui.btnZoomToLayer.setDefaultAction(iface.actionZoomToLayer())
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self.ui.btnZoomToSelected.setDefaultAction(iface.actionZoomToSelected())
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self.ui.btnSelectRectangle.setDefaultAction(iface.actionSelectRectangle())
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self.ui.btnUnselectAll.setDefaultAction(iface.mainWindow().findChild(QAction, "mActionDeselectAll"))
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self.ui.btnUnselectLayer.setDefaultAction(iface.mainWindow().findChild(QAction, "mActionDeselectActiveLayer"))
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self.ui.btnMapTips.setDefaultAction(iface.actionMapTips())
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# Signale verbinden
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self._connect_basemap_signals()
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self._connect_stations_signals()
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self._waterlevels_connect_signals()
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self._history_connect_signals()
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# basemap -----------------------------------------------------------------
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def _basemap_create(self, path, name, disconnect: Callable[[], None], map_tips) -> None | QgsVectorLayer:
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print("_basemap_create: %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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# map-tips setzen
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basemap.setMapTipTemplate(map_tips)
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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)) # am unteren Ende anhängen → liegt somit unter stations/waterlevels
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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._cbBasemapLines_toggled)
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self.ui.cbBasemapAreas.toggled.connect(self._cbBasemapAreas_toggled)
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def _cbBasemapLines_toggled(self):
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checked = self.ui.cbBasemapLines.isChecked()
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print("_cbBasemapLines_toggled: %s" % (checked,))
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if self.lines is None and checked:
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self.lines = self._basemap_create("waters.gpkg|layername=water_l", "Flüsse", self._basemap_disconnect_lines, BASEMAP_MAP_TIPS)
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if self.lines is not None:
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self._layer_set_visible(self.lines, checked)
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self._layer_refresh(self.lines)
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def _cbBasemapAreas_toggled(self):
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checked = self.ui.cbBasemapAreas.isChecked()
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print("_cbBasemapAreas_toggled: %s" % (checked,))
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if self.areas is None and checked:
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self.areas = self._basemap_create("waters.gpkg|layername=water_f", "Flächen", self._basemap_disconnect_areas, BASEMAP_MAP_TIPS)
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if self.areas is not None:
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self._layer_set_visible(self.areas, checked)
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self._layer_refresh(self.areas)
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def _basemap_disconnect_lines(self):
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print("_basemap_disconnect_lines")
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self.lines = None
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self.ui.cbBasemapLines.setChecked(False)
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def _basemap_disconnect_areas(self):
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print("_basemap_disconnect_areas")
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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._cbStationsVisible_toggled)
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self.ui.cbStationsName.toggled.connect(self._cbStationsName_toggled)
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self.ui.cbStationsNumber.toggled.connect(self._cbStationsNumber_toggled)
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self.ui.cbStationsAgency.toggled.connect(self._cbStationsAgency_toggled)
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self.ui.cbStationsKm.toggled.connect(self._cbStationsKm_toggled)
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self.ui.cbStationsWater.toggled.connect(self._cbStationsWater_toggled)
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def _cbStationsVisible_toggled(self):
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visible = self.ui.cbStationsVisible.isChecked()
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print("_cbStationsVisible_toggled: %s" % (visible,))
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if self.stations is None and visible:
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reader = PoStationsQgs()
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features = reader.getStationsFeatures()
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self.stations = self._layer_create_from_reader(reader.fields, reader.crs, features, "Stationen", STATIONS_MAP_TIPS)
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self._layer_add_to_instance(self.stations, "styles/label_stations.qml", self._stations_disconnect)
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if self.stations is not None:
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self._layer_set_visible(self.stations, visible)
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self._stations_update_labels()
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def _cbStationsName_toggled(self):
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checked = self.ui.cbStationsName.isChecked()
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print("_cbStationsName_toggled: %s" % (checked,))
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self._stations_update_labels()
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def _cbStationsNumber_toggled(self):
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checked = self.ui.cbStationsNumber.isChecked()
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print("_cbStationsNumber_toggled: %s" % (checked,))
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self._stations_update_labels()
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def _cbStationsAgency_toggled(self):
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checked = self.ui.cbStationsAgency.isChecked()
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print("_cbStationsAgency_toggled: %s" % (checked,))
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self._stations_update_labels()
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def _cbStationsKm_toggled(self):
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checked = self.ui.cbStationsKm.isChecked()
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print("_cbStationsKm_toggled: %s" % (checked,))
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self._stations_update_labels()
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def _cbStationsWater_toggled(self):
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checked = self.ui.cbStationsWater.isChecked()
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print("_cbStationsWater_toggled: %s" % (checked,))
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self._stations_update_labels()
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def _stations_disconnect(self):
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print("_stations_disconnect")
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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 _stations_update_labels(self):
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print("_stations_update_labels")
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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.cbStationsNumber.isChecked():
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fields.append('\'#\', "number"')
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if self.ui.cbStationsName.isChecked():
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fields.append('"shortname"')
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if self.ui.cbStationsAgency.isChecked():
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fields.append('"agency"')
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if self.ui.cbStationsWater.isChecked():
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fields.append('"water"')
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if self.ui.cbStationsKm.isChecked():
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fields.append('"km", \' km\'') # 2 Teile anhängen: km, " km"
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self._layer_update_labels(self.stations, fields)
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# waterlevels -------------------------------------------------------------
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def _waterlevels_connect_signals(self):
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print("_waterlevels_connect_signals")
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# noinspection DuplicatedCode
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self.ui.cbWaterlevelsVisible.toggled.connect(self._cbWaterlevelsVisible_toggled)
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self.ui.cbWaterlevelsName.toggled.connect(self._cbWaterlevelsName_toggled)
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self.ui.cbWaterlevelsNumber.toggled.connect(self._cbWaterlevelsNumber_toggled)
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self.ui.cbWaterlevelsAgency.toggled.connect(self._cbWaterlevelsAgency_toggled)
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self.ui.cbWaterlevelsTimestamp.toggled.connect(self._cbWaterlevelsTimestamp_toggled)
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self.ui.cbWaterlevelsValue.toggled.connect(self._cbWaterlevelsValue_toggled)
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self.ui.cbWaterlevelsMean.toggled.connect(self._cbWaterlevelsMean_toggled)
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self.ui.cbWaterlevelsAbsolute.toggled.connect(self._cbWaterlevelsAbsolute_toggled)
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self.ui.cbWaterlevelsWater.toggled.connect(self._cbWaterlevelsWater_toggled)
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def _cbWaterlevelsVisible_toggled(self):
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visible = self.ui.cbWaterlevelsVisible.isChecked()
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print("_cbWaterlevelsVisible_toggled: %s" % (visible,))
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if self.waterlevels is None and visible:
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reader = PoWaterlevelsQgs()
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features = reader.getWaterlevelsFeatures()
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self.waterlevels = self._layer_create_from_reader(reader.fields, reader.crs, features, "Pegelstände", WATERLEVELS_MAP_TIPS)
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self._layer_add_to_instance(self.waterlevels, "styles/label_waterlevels.qml", self.waterlevels_disconnect)
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if self.waterlevels is not None:
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self._layer_set_visible(self.waterlevels, visible)
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self._waterlevels_update_labels()
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def _cbWaterlevelsName_toggled(self):
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checked = self.ui.cbWaterlevelsName.isChecked()
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print("_cbWaterlevelsName_toggled: %s" % (checked,))
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self._waterlevels_update_labels()
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def _cbWaterlevelsNumber_toggled(self):
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checked = self.ui.cbWaterlevelsNumber.isChecked()
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print("_cbWaterlevelsNumber_toggled: %s" % (checked,))
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self._waterlevels_update_labels()
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def _cbWaterlevelsAgency_toggled(self):
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checked = self.ui.cbWaterlevelsAgency.isChecked()
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print("_cbWaterlevelsAgency_toggled: %s" % (checked,))
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self._waterlevels_update_labels()
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def _cbWaterlevelsTimestamp_toggled(self):
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checked = self.ui.cbWaterlevelsTimestamp.isChecked()
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print("_cbWaterlevelsTimestamp_toggled: %s" % (checked,))
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self._waterlevels_update_labels()
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def _cbWaterlevelsValue_toggled(self):
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checked = self.ui.cbWaterlevelsValue.isChecked()
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print("_cbWaterlevelsValue_toggled: %s" % (checked,))
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self._waterlevels_update_labels()
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def _cbWaterlevelsMean_toggled(self):
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checked = self.ui.cbWaterlevelsMean.isChecked()
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print("_cbWaterlevelsMean_toggled: %s" % (checked,))
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self._waterlevels_update_labels()
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def _cbWaterlevelsAbsolute_toggled(self):
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checked = self.ui.cbWaterlevelsAbsolute.isChecked()
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print("_cbWaterlevelsAbsolute_toggled: %s" % (checked,))
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self._waterlevels_update_labels()
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def _cbWaterlevelsWater_toggled(self):
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checked = self.ui.cbWaterlevelsWater.isChecked()
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print("_cbWaterlevelsWater_toggled: %s" % (checked,))
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self._waterlevels_update_labels()
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def waterlevels_disconnect(self):
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print("waterlevels_disconnect")
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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 _waterlevels_update_labels(self):
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print("_waterlevels_update_labels")
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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.cbWaterlevelsNumber.isChecked():
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fields.append('\'#\', "number"')
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if self.ui.cbWaterlevelsName.isChecked():
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fields.append('"shortname"')
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if self.ui.cbWaterlevelsAgency.isChecked():
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fields.append('"agency"')
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if self.ui.cbWaterlevelsWater.isChecked():
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fields.append('"water"')
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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", \' \', "unit"') # 3 Teile anhängen: value, leerzeichen, unit
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if self.ui.cbWaterlevelsMean.isChecked():
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fields.append('\'MnwMhw=\', "stateMnwMhw"')
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if self.ui.cbWaterlevelsAbsolute.isChecked():
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fields.append('\'NswHsw=\', "stateNswHsw"')
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self._layer_update_labels(self.waterlevels, fields)
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# layers ------------------------------------------------------------------
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def _layer_set_visible(self, basemap: QgsVectorLayer, visible):
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print("_layer_set_visible: %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 _layer_create_from_reader(self, fields, crs, features, title, map_tips) -> None | QgsVectorLayer:
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print("_layer_create_from_reader")
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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_create_from_reader: 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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# map-tips setzen
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layer.setMapTipTemplate(map_tips)
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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("_layer_create_from_reader: 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 _layer_add_to_instance(self, layer: QgsVectorLayer, styles_path: str, disconnect: Callable[[], None]):
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print("_layer_add_to_instance")
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if layer is None:
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print("_layer_add_to_instance: Fehler: 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 Signal verbinden
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layer.willBeDeleted.connect(disconnect)
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layer.selectionChanged.connect(self._layer_selection_changed)
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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)) # am oberen Ende anhängen → liegt somit über basemap
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def _layer_selection_changed(self):
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print("_layer_selection_changed")
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if self.waterlevels is None or self.waterlevels != self.iface.activeLayer():
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print("_layer_selection_changed: Aktueller Layer ist nicht unser Pegelstands-Layer")
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return
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selected = self.waterlevels.selectedFeatures()
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if len(selected) == 1:
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if self.ui.slHistoryStation.count() == 0:
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self._history_load_stations()
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selected_shortname = selected[0].attribute("shortname")
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print("_layer_selection_changed: Lade Pegelstandsverlauf zur Auswahl: %s" % (selected_shortname))
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self._historyStation_set_by_shortname(selected_shortname)
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else:
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print("_layer_selection_changed: Anzahl ausgewählter Elemente ist NICHT 1, lade Pegelstandsverlauf NICHT!")
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def _layer_update_labels(self, layer, fields):
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print("_layer_update_labels")
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labeling = QgsVectorLayerSimpleLabeling(QgsPalLayerSettings())
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# Feldnamen zu einem Minus-getrennten String zusammenbauen
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expression = ", ' / ', ".join(fields)
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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._layer_refresh(layer)
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def _layer_refresh(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 _history_connect_signals(self):
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print("_history_connect_signals")
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self.ui.slHistoryStation.currentTextChanged.connect(self._slHistoryStation_changed)
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self.ui.btnHistoryStationsRefresh.clicked.connect(self._btnHistoryStationsRefresh_clicked)
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self.ui.numHistoryDays.valueChanged.connect(self._numHistoryDays_changed)
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self.ui.btnHistoryGo.clicked.connect(self._history_load_graph)
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def _slHistoryStation_changed(self):
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print("_slHistoryStation_changed: %s" % (self.ui.slHistoryStation.currentText(),))
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self._history_load_graph()
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def _btnHistoryStationsRefresh_clicked(self):
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print("_btnHistoryStationsRefresh_clicked")
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self._history_load_stations()
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def _numHistoryDays_changed(self):
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print("_numHistoryDays_changed: %s" % (self.ui.numHistoryDays.value(),))
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def _history_load_graph(self):
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print("_history_load_graph")
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if not self.ui.slHistoryStation.isEnabled():
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# während dem Aktualisieren der Stationsliste treten change-signale auf, die werden hier abgefangen
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print("_history_load_graph: Stationsliste ist aktuell gesperrt")
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return
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station = self.ui.slHistoryStation.currentText()
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days = self.ui.numHistoryDays.value()
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print("_history_load_graph: station=%s days=%s" % (station, days))
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self.graph.lbHistory.clear()
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self.graph.setWindowTitle("%s / %d Tag(e)" % (station, days))
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self.graph.show()
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if station == '' or station is None:
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print("_history_load_graph: Fehler: Ungültige Station: %s" % (station,))
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self.graph.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("_history_load_graph: Fehler: Ungültige Anzahl von Tagen: %s" % (days,))
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self.graph.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:
|
|
print("_history_load_graph: Fehler: Keine Daten erhalten")
|
|
self.graph.lbHistory.setText("Fehler beim Download!")
|
|
return
|
|
|
|
pixmap = QtGui.QPixmap()
|
|
pixmap.loadFromData(image_data)
|
|
self.graph.lbHistory.setPixmap(pixmap)
|
|
self.graph.lbHistory.resize(pixmap.width(), pixmap.height())
|
|
|
|
print("_history_load_graph: Bild erfolgreich geladen")
|
|
|
|
def _history_load_stations(self):
|
|
print("_history_load_stations")
|
|
self.ui.slHistoryStation.setEnabled(False)
|
|
self.ui.btnHistoryGo.setEnabled(False)
|
|
|
|
# behalte die aktuelle Station, um sie (mit eventuell neuem Index) wiederherzustellen
|
|
current_station = self.ui.slHistoryStation.currentText()
|
|
print("_history_load_stations: bisherige_station=%s" % current_station)
|
|
|
|
self.ui.slHistoryStation.clear()
|
|
|
|
stations = PoStations().getStations()
|
|
if stations is None or len(stations) == 0:
|
|
print("_history_load_stations: Fehler: Keine Stationen erhalten")
|
|
return
|
|
|
|
index = 0
|
|
neuer_index = None
|
|
for station in stations:
|
|
shortname = station['attributes']['shortname']
|
|
if shortname == current_station:
|
|
neuer_index = index
|
|
self.ui.slHistoryStation.addItem(shortname)
|
|
index += 1
|
|
|
|
if self._historyStation_set_by_shortname(current_station):
|
|
print("_history_load_stations: Bisherige Station \"%s\" mit neuem index=%d wiederhergestellt" % (current_station, neuer_index))
|
|
else:
|
|
self.ui.slHistoryStation.setCurrentIndex(0)
|
|
station = self.ui.slHistoryStation.currentText()
|
|
print("_history_load_stations: Bisherige Station \"%s\" nicht wiedergefunden. Nehme erste Station: %s" % (current_station, station))
|
|
|
|
self.ui.slHistoryStation.setEnabled(True)
|
|
self.ui.btnHistoryGo.setEnabled(True)
|
|
|
|
def _historyStation_set_by_shortname(self, shortname):
|
|
index = self._historyStation_get_index_by_shortname(shortname)
|
|
if index is None:
|
|
return False
|
|
self.ui.slHistoryStation.setCurrentIndex(index)
|
|
return True
|
|
|
|
def _historyStation_get_index_by_shortname(self, shortname):
|
|
print("_historyStation_get_index_by_shortname: shortname=%s" % (shortname,))
|
|
for index in range(self.ui.slHistoryStation.count()):
|
|
text = self.ui.slHistoryStation.itemText(index)
|
|
if shortname == text:
|
|
print("_historyStation_get_index_by_shortname: index=%d" % (index,))
|
|
return index
|
|
print("_historyStation_get_index_by_shortname: Nicht gefunden")
|
|
return None
|