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Region_dialog.py
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Region_dialog.py
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# -*- coding: utf-8 -*-
"""
/***************************************************************************
GeoDataDialog
A QGIS plugin
This plugin gathers cz/sk data sources.
Generated by Plugin Builder: http://g-sherman.github.io/Qgis-Plugin-Builder/
-------------------
begin : 2020-08-04
git sha : $Format:%H$
copyright : (C) 2020 by Test
email : test
***************************************************************************/
/***************************************************************************
* *
* 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. *
* *
***************************************************************************/
"""
import os
import configparser
import sys
import webbrowser
from qgis.PyQt import uic
from qgis.PyQt import QtWidgets
from qgis.PyQt import QtGui
from qgis.utils import iface
from qgis.core import *
from qgis.gui import *
from qgis.PyQt.QtGui import *
from qgis.PyQt.QtCore import *
from qgis.PyQt.QtWidgets import *
from .crs_trans.CoordinateTransformation import CoordinateTransformation
from .crs_trans.CoordinateTransformationList import CoordinateTransformationList
from .crs_trans.ShiftGrid import ShiftGrid
from .crs_trans.ShiftGridList import ShiftGridList
from .Geo_Data_dialog import GeoDataDialog
# This loads your .ui file so that PyQt can populate your plugin with the elements from Qt Designer
FORM_CLASS, _ = uic.loadUiType(os.path.join(
os.path.dirname(__file__), 'Region_dialog_base.ui'))
class RegionDialog(QtWidgets.QDialog, FORM_CLASS):
def __init__(self, iface, parent=None, start=True):
"""Constructor."""
super(RegionDialog, self).__init__(parent)
self.iface = iface
self.setupUi(self)
self.start = start
self.pushButtonSVK.setIcon(QIcon(os.path.join(os.path.dirname(__file__), "icons/svk.png")))
self.pushButtonCZE.setIcon(QIcon(os.path.join(os.path.dirname(__file__), "icons/cze.png")))
self.pushButtonSVK.clicked.connect(self.setRegionSVK)
self.pushButtonCZE.clicked.connect(self.setRegionCZE)
self.grids = ShiftGridList()
self.load_shift_grids()
self.transformations = CoordinateTransformationList()
self.load_crs_transformations()
def setStart(self, start):
self.start = start
def setRegion(self, region):
self.transformations.applyTransforations(region)
QMessageBox.information(None, QApplication.translate("GeoData", "Info", None),
QApplication.translate("GeoData", "You have to restart QGIS to apply all settings.", None))
s = QgsSettings()
s.setValue("geodata_cz_sk/region", region)
if self.start:
self.hide()
gdd = GeoDataDialog(self.iface)
gdd.show()
gdd.exec_()
else:
self.hide()
def setRegionSVK(self):
self.setRegion("SVK")
def setRegionCZE(self):
self.setRegion("CZE")
def load_crs_transformations(self):
"""
Loads available transformatios defined in crs_trans.ini
"""
projVersion = QgsProjUtils.projVersionMajor()
transConfigFile = os.path.join(os.path.dirname(__file__), "crs_trans", "crs_trans.ini")
transConfig = configparser.ConfigParser()
try:
transConfig.read(transConfigFile)
except Exception:
self.iface.messageBar().pushMessage(QApplication.translate("GeoData", "Error", None),
QApplication.translate("GeoData", "Unable to read coordinate transformations definition file.", None),
level=Qgis.Critical)
raise Exception("Unable to read coordinate transformations definition file.")
for transSection in transConfig:
if transSection != "DEFAULT":
transSectionContent = transConfig[transSection]
regions = transSectionContent.get("Regions", None)
if isinstance(regions, str) and regions is not None:
regions = regions.split(" ")
crsFrom = transSectionContent.get("CrsFrom")
crsTo = transSectionContent.get("CrsTo")
# TransfOld is used only for Proj version 6 and only if present
if projVersion == 6 and "TransfOld" in [x[0] for x in transConfig.items(transSection)]:
transformation = transSectionContent.get("TransfOld")
else:
transformation = transSectionContent.get("Transf")
if projVersion == 6:
grid = transSectionContent.get("GridOld", None)
else:
grid = transSectionContent.get("Grid", None)
if grid is not None and len(self.grids.getGridsByKeys(grid)) != 1:
self.iface.messageBar().pushMessage(QApplication.translate("GeoData", "Warning", None),
QApplication.translate("GeoData", "Skipping definition section {} because grid {} is unknown.".format(transSection, grid), None),
level=Qgis.Warning,
duration=5)
continue
# print("--------------------\nSection: {}\nRegion: {}\nCrsFrom: {}\nCrsTo: {}\nTransformation: {}\nShiftFile: {}".format(
# transSection, regions, crsFrom, crsTo, transformation, gridFileUrl))
if regions is None or regions == "" or \
crsFrom is None or crsFrom == "" or \
crsTo is None or crsTo == "" or \
transformation is None or transformation == "":
self.iface.messageBar().pushMessage(QApplication.translate("GeoData", "Warning", None),
QApplication.translate("GeoData", "Skipping incomplete transformation definition section {}.".format(transSection), None),
level=Qgis.Warning,
duration=5)
continue
try:
transf = CoordinateTransformation(regions, crsFrom, crsTo, transformation, self.grids, grid)
self.transformations.append(transf)
except Exception:
continue
def load_shift_grids(self):
"""
Loads available shift grids defined in grids.ini
"""
gridsConfigFile = os.path.join(os.path.dirname(__file__), "crs_trans", "grids.ini")
gridsConfig = configparser.ConfigParser()
try:
gridsConfig.read(gridsConfigFile)
except Exception:
self.iface.messageBar().pushMessage(QApplication.translate("GeoData", "Error", None),
QApplication.translate("GeoData", "Unable to read grids definition file.", None),
level=Qgis.Critical)
raise Exception("Unable to read grids definition file.")
for grid in gridsConfig:
if grid != "DEFAULT":
gridContent = gridsConfig[grid]
gridFileUrl = gridContent.get("GridFileUrl")
gridFileName = gridContent.get("GridFileName")
if gridFileUrl is None or gridFileName is None:
self.iface.messageBar().pushMessage(QApplication.translate("GeoData", "Warning", None),
QApplication.translate("GeoData", "Skipping grid definition of grid {}.".format(grid), None),
level=Qgis.Warning,
duration=5)
continue
try:
shiftGrid = ShiftGrid(grid, gridFileUrl, gridFileName)
self.grids.append(shiftGrid)
except Exception:
continue