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kwg_geoenrichment.py
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# -*- coding: utf-8 -*-
"""
/***************************************************************************
kwg_geoenrichment
A QGIS plugin
KWG Geoenrichment plugin
Generated by Plugin Builder: http://g-sherman.github.io/Qgis-Plugin-Builder/
-------------------
begin : 2021-06-04
git sha : $Format:%H$
copyright : (C) 2021 by Rushiraj Nenuji, University of California Santa Barbara
email : [email protected]
***************************************************************************/
/***************************************************************************
* *
* 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 json
import ntpath
import logging
import os.path
from configparser import ConfigParser
from datetime import time
from qgis.PyQt.QtCore import QTranslator, QSettings, QCoreApplication, QVariant, \
QThreadPool, QRunnable, pyqtSlot
from qgis.PyQt.QtGui import QIcon
from qgis.PyQt.QtWidgets import QAction, QInputDialog, QLineEdit, QComboBox, QMessageBox, \
QLabel, QPushButton, QFileDialog
from qgis.core import QgsFeature, QgsProject, QgsGeometry, \
QgsCoordinateTransform, QgsCoordinateTransformContext, QgsMapLayer, \
QgsFeatureRequest, QgsVectorLayer, QgsLayerTreeGroup, QgsRenderContext, \
QgsCoordinateReferenceSystem, QgsMessageLog, Qgis, QgsFields, QgsField, QgsVectorFileWriter, QgsLayerTreeLayer, \
QgsWkbTypes, QgsDataProvider
from typing import re
import statistics
from .drawtools import DrawPolygon, \
SelectPoint
from .kwg_plugin_dialog import kwg_pluginDialog
from .kwg_plugin_enrichment_dialog import kwg_pluginEnrichmentDialog
from .kwg_sparqlquery import kwg_sparqlquery
from .kwg_sparqlutil import kwg_sparqlutil
from .kwg_util import kwg_util as UTIL
from .qdrawsettings import QdrawSettings
# Initialize Qt resources from file resources.py
# Import the code for the dialog
_SPARQL_ENDPOINT_DICT = {
"KnowWhere Graph V2 (stable)": "https://stko-kwg.geog.ucsb.edu/graphdb/repositories/KWG-V2-Vienna",
"KnowWhere Graph V3 (beta)": "https://stko-kwg.geog.ucsb.edu/sparql"
}
class kwg_geoenrichment:
"""QGIS Plugin Implementation."""
def __init__(self, iface):
"""Constructor.
:param iface: An interface instance that will be passed to this class
which provides the hook by which you can manipulate the QGIS
application at run time.
:type iface: QgsInterface
"""
# Save reference to the QGIS interface
self.iface = iface
# initialize plugin directory
self.plugin_dir = os.path.dirname(__file__)
# initialize locale
locale = QSettings().value('locale/userLocale')[0:2]
locale_path = os.path.join(
self.plugin_dir,
'i18n',
'kwg_geoenrichment_{}.qm'.format(locale))
if os.path.exists(locale_path):
self.translator = QTranslator()
self.translator.load(locale_path)
QCoreApplication.installTranslator(self.translator)
# Declare instance attributes
self.actions = []
self.menu = self.tr(u'&KnowWhereGraph')
# Check if plugin was started the first time in current QGIS session
# Must be set in initGui() to survive plugin reloads
self.first_start = None
self.threadpool = QThreadPool()
# QDraw specific configs
self.sb = self.iface.statusBarIface()
self.tool = None
self.toolname = None
self.toolbar = self.iface.addToolBar('KWG Geoenrichment')
self.toolbar.setObjectName('KWG Geoenrichment')
self.bGeom = None
self.settings = QdrawSettings()
self.path = os.path.dirname(os.path.abspath(__file__))
# Set up the config file
conf = ConfigParser()
self._config = conf.read('config.ini')
self.logger = logging.getLogger()
self.logger.setLevel(logging.DEBUG)
self.path = os.path.realpath(
os.path.join(os.getcwd(), os.path.dirname(__file__)))
if not os.path.exists(os.path.join(self.path, 'logs')):
os.makedirs(os.path.join(self.path, 'logs'))
handler = logging.FileHandler(os.path.join(self.path, 'logs', 'kwg_geoenrichment.log'), 'w+', 'utf-8')
formatter = logging.Formatter(
'%(asctime)s - %(levelname)s - %(filename)s:%(funcName)s - %(message)s')
handler.setFormatter(formatter) # Pass handler as a parameter, not assign
self.logger.addHandler(handler)
self.sparqlQuery = kwg_sparqlquery()
self.sparqlUtil = kwg_sparqlutil()
self.eventPlaceTypeDict = dict()
self.kwg_endpoint_dict = _SPARQL_ENDPOINT_DICT
# content dict s-o
self.selectedValDict = {}
# setting up button flags
self.disableGDB = True
self.disableSelectContent = True
self.disableRun = True
self.contentCounter = 0
self.mergeRuleDict = {
"1 - Get the first value found": "first",
"2 - Concate values together with a '|'": "concat",
"3 - Get the number of values found": "count",
"4 - Get the average of all values(numeric)": "avg",
"5 - Get the highest value (numeric)": "high",
"6 - Get the lowest value (numeric)": "low",
"7 - Get the standard deviation of all values (numeric)": "stdev",
"8 - Get the total of all values (numeric)": "total",
}
# noinspection PyMethodMayBeStatic
def tr(self, message):
"""Get the translation for a string using Qt translation API.
We implement this ourselves since we do not inherit QObject.
:param message: String for translation.
:type message: str, QString
:returns: Translated version of message.
:rtype: QString
"""
# noinspection PyTypeChecker,PyArgumentList,PyCallByClass
return QCoreApplication.translate('kwg_geoenrichment', message)
def add_action(
self,
icon_path,
text,
callback,
enabled_flag=True,
checkable=False,
add_to_menu=True,
add_to_toolbar=True,
status_tip=None,
whats_this=None,
menu=None,
parent=None):
"""Add a toolbar icon to the toolbar.
:param icon_path: Path to the icon for this action. Can be a resource
path (e.g. ':/plugins/foo/bar.png') or a normal file system path.
:type icon_path: str
:param text: Text that should be shown in menu items for this action.
:type text: str
:param callback: Function to be called when the action is triggered.
:type callback: function
:param enabled_flag: A flag indicating if the action should be enabled
by default. Defaults to True.
:type enabled_flag: bool
:param add_to_menu: Flag indicating whether the action should also
be added to the menu. Defaults to True.
:type add_to_menu: bool
:param add_to_toolbar: Flag indicating whether the action should also
be added to the toolbar. Defaults to True.
:type add_to_toolbar: bool
:param status_tip: Optional text to show in a popup when mouse pointer
hovers over the action.
:type status_tip: str
:param parent: Parent widget for the new action. Defaults None.
:type parent: QWidget
:param whats_this: Optional text to show in the status bar when the
mouse pointer hovers over the action.
:returns: The action that was created. Note that the action is also
added to self.actions list.
:rtype: QAction
"""
icon = QIcon(icon_path)
action = QAction(icon, text, parent)
action.triggered.connect(callback)
action.setEnabled(enabled_flag)
action.setCheckable(checkable)
if status_tip is not None:
action.setStatusTip(status_tip)
if whats_this is not None:
action.setWhatsThis(whats_this)
if menu is not None:
action.setMenu(menu)
if add_to_toolbar:
# Adds plugin icon to Plugins toolbar
self.iface.addToolBarIcon(action)
self.toolbar.addAction(action)
if add_to_menu:
self.iface.addPluginToMenu(
self.menu,
action)
self.actions.append(action)
return action
def initGui(self):
"""Create the menu entries and toolbar icons inside the QGIS GUI."""
# self.app.setStylesheet(open("style.qss", "r").read())
# will be set False in run()
self.first_start = True
icon_path = self.path + "/resources/graph_Query.png"
if self.first_start:
self.add_action(
QIcon(icon_path),
text=self.tr(u'&Geoenrichment'),
callback=self.run,
parent=self.iface.mainWindow())
def unload(self):
"""Removes the plugin menu item and icon from QGIS GUI."""
for action in self.actions:
self.iface.removePluginMenu(
self.tr(u'&KnowWhereGraph'),
action)
self.iface.removeToolBarIcon(action)
del self.toolbar
def run(self):
"""Run method that performs all the real work"""
# Create the dialog with elements (after translation) and keep reference
# Only create GUI ONCE in callback, so that it will only load when the plugin is started
if self.first_start == True:
self.first_start = False
# set the content counter to 0 on re-run
self.contentCounter = 0
try:
self.dlg.close()
except:
pass
self.dlg = kwg_pluginDialog()
self.retrievePolygonLayers()
self.enrichmentObjBuffer = []
self.labelObjBuffer = []
self.lineObjBuffer = []
self.comboBoxBuffer = []
self.deleteObjBuffer = []
# show the dialog
self.dlg.show()
# disable GDB Button
self.dlg.pushButton_gdb.clicked.connect(lambda: self.handleGeoPackageFileBrowser())
self.dlg.pushButton_refresh.clicked.connect(lambda: self.refreshLayer())
# get the geometry from the user
self.dlg.pushButton_polygon.clicked.connect(self.drawPolygon)
# handle tool run
self.dlg.pushButton_run.clicked.connect(self.handleRun)
return
def drawPolygon(self):
self.dlg.hide()
if self.tool:
self.tool.reset()
self.tool = DrawPolygon(self.iface, self.settings.getColor())
self.contentCounter = 0
self.tool.selectionDone.connect(lambda: self.draw())
self.tool.move.connect(self.updateSB)
self.iface.mapCanvas().setMapTool(self.tool)
self.drawShape = 'polygon'
self.toolname = 'drawPolygon'
self.resetSB()
def drawBuffer(self):
self.bGeom = None
if self.tool:
self.tool.reset()
self.tool = SelectPoint(self.iface, self.settings.getColor())
self.actions[5].setIcon(
QIcon(':/plugins/kwg_geoenrichment/resources/icon_DrawT.png'))
self.actions[5].setText(
self.tr('Buffer drawing tool on the selected layer'))
self.actions[5].triggered.disconnect()
self.actions[5].triggered.connect(self.drawBuffer)
self.actions[5].menu().actions()[0].setIcon(
QIcon(':/plugins/kwg_geoenrichment/resources/icon_DrawTP.png'))
self.actions[5].menu().actions()[0].setText(
self.tr('Polygon buffer drawing tool on the selected layer'))
self.actions[5].menu().actions()[0].triggered.disconnect()
self.actions[5].menu().actions()[0].triggered.connect(
self.drawPolygonBuffer)
self.tool.setAction(self.actions[5])
self.tool.select.connect(self.selectBuffer)
self.tool.selectionDone.connect(self.draw)
self.iface.mapCanvas().setMapTool(self.tool)
self.drawShape = 'polygon'
self.toolname = 'drawBuffer'
self.resetSB()
def drawPolygonBuffer(self):
self.bGeom = None
if self.tool:
self.tool.reset()
self.tool = DrawPolygon(self.iface, self.settings.getColor())
self.actions[5].setIcon(
QIcon(':/plugins/kwg_geoenrichment/resources/icon_DrawTP.png'))
self.actions[5].setText(
self.tr('Polygon buffer drawing tool on the selected layer'))
self.actions[5].triggered.disconnect()
self.actions[5].triggered.connect(self.drawPolygonBuffer)
self.actions[5].menu().actions()[0].setIcon(
QIcon(':/plugins/kwg_geoenrichment/resources/icon_DrawT.png'))
self.actions[5].menu().actions()[0].setText(
self.tr('Buffer drawing tool on the selected layer'))
self.actions[5].menu().actions()[0].triggered.disconnect()
self.actions[5].menu().actions()[0].triggered.connect(self.drawBuffer)
self.tool.setAction(self.actions[5])
self.tool.selectionDone.connect(self.selectBuffer)
self.iface.mapCanvas().setMapTool(self.tool)
self.drawShape = 'polygon'
self.toolname = 'drawBuffer'
self.resetSB()
def showSettingsWindow(self):
self.settings.settingsChanged.connect(self.settingsChangedSlot)
self.settings.show()
# triggered when a setting is changed
def settingsChangedSlot(self):
if self.tool:
self.tool.rb.setColor(self.settings.getColor())
def resetSB(self):
message = {
'drawPoint': 'Left click to place a point.',
'drawLine': 'Left click to place points. Right click to confirm.',
'drawRect': 'Maintain the left click to draw a rectangle.',
'drawCircle': 'Maintain the left click to draw a circle. \
Simple Left click to give a perimeter.',
'drawPolygon': 'Left click to place points. Right click to \
confirm.',
'drawBuffer': 'Select a vector layer in the Layer Tree, \
then select an entity on the map.'
}
self.sb.showMessage(self.tr(message[self.toolname]))
def updateSB(self):
g = self.geomTransform(
self.tool.rb.asGeometry(),
self.iface.mapCanvas().mapSettings().destinationCrs(),
QgsCoordinateReferenceSystem.fromEpsgId(2154))
if self.toolname == 'drawLine':
if g.length() >= 0:
self.sb.showMessage(
self.tr('Length') + ': ' + str("%.2f" % g.length()) + " m")
else:
self.sb.showMessage(self.tr('Length') + ': ' + "0 m")
else:
if g.area() >= 0:
self.sb.showMessage(
self.tr('Area') + ': ' + str("%.2f" % g.area()) + " m" + u'²')
else:
self.sb.showMessage(self.tr('Area') + ': ' + "0 m" + u'²')
self.iface.mapCanvas().mapSettings().destinationCrs().authid()
def geomTransform(self, geom, crs_orig, crs_dest):
g = QgsGeometry(geom)
crsTransform = QgsCoordinateTransform(
crs_orig, crs_dest, QgsCoordinateTransformContext()) # which context ?
g.transform(crsTransform)
return g
def selectBuffer(self):
rb = self.tool.rb
if isinstance(self.tool, DrawPolygon):
rbSelect = self.tool.rb
else:
rbSelect = self.tool.rbSelect
layer = self.iface.layerTreeView().currentLayer()
if layer is not None and layer.type() == QgsMapLayer.VectorLayer \
and self.iface.layerTreeView().currentNode().isVisible():
# rubberband reprojection
g = self.geomTransform(
rbSelect.asGeometry(),
self.iface.mapCanvas().mapSettings().destinationCrs(),
layer.crs())
features = layer.getFeatures(QgsFeatureRequest(g.boundingBox()))
rbGeom = []
for feature in features:
geom = feature.geometry()
try:
if g.intersects(geom):
rbGeom.append(feature.geometry())
except:
# there's an error but it intersects
# fix_print_with_import
print('error with ' + layer.name() + ' on ' + str(feature.id()))
rbGeom.append(feature.geometry())
if len(rbGeom) > 0:
for geometry in rbGeom:
if rbGeom[0].combine(geometry) is not None:
if self.bGeom is None:
self.bGeom = geometry
else:
self.bGeom = self.bGeom.combine(geometry)
rb.setToGeometry(self.bGeom, layer)
if isinstance(self.tool, DrawPolygon):
self.draw()
def draw(self):
rb = self.tool.rb
g = rb.asGeometry()
ok = True
warning = False
errBuffer_noAtt = False
errBuffer_Vertices = False
layer = self.iface.layerTreeView().currentLayer()
if self.toolname == 'drawBuffer':
if self.bGeom is None:
warning = True
errBuffer_noAtt = True
else:
perim, ok = QInputDialog.getDouble(
self.iface.mainWindow(), self.tr('Perimeter'),
self.tr('Give a perimeter in m:')
+ '\n' + self.tr('(works only with metric crs)'),
min=0)
g = self.bGeom.buffer(perim, 40)
rb.setToGeometry(g, QgsVectorLayer(
"Polygon?crs=" + layer.crs().authid(), "", "memory"))
if g.length() == 0 and ok:
warning = True
errBuffer_Vertices = True
if self.toolname == 'drawCopies':
if g.length() < 0:
warning = True
errBuffer_noAtt = True
if ok and not warning:
name = "geo_enrichment_polygon"
self.selectedLayername = "geo_enrichment_polygon"
pjt = QgsProject.instance()
# save the buffer
if self.drawShape == 'point':
layer = QgsVectorLayer(
"Point?crs=" + self.iface.mapCanvas().mapSettings().destinationCrs().authid() + "&field=" + self.tr(
'Geometry') + ":string(255)", name, "memory")
g = g.centroid() # force geometry as point
elif self.drawShape == 'XYpoint':
layer = QgsVectorLayer(
"Point?crs=" + self.XYcrs.authid() + "&field=" + self.tr('Geometry') + ":string(255)", name,
"memory")
g = g.centroid()
elif self.drawShape == 'line':
layer = QgsVectorLayer(
"LineString?crs=" + self.iface.mapCanvas().mapSettings().destinationCrs().authid() + "&field=" + self.tr(
'Geometry') + ":string(255)", name, "memory")
# fix_print_with_import
print(
"LineString?crs=" + self.iface.mapCanvas().mapSettings().destinationCrs().authid() + "&field=" + self.tr(
'Geometry') + ":string(255)")
else:
layer = QgsVectorLayer(
"Polygon?crs=" + self.iface.mapCanvas().mapSettings().destinationCrs().authid() + "&field=" + self.tr(
'Geometry') + ":string(255)", name, "memory")
layer.startEditing()
symbols = layer.renderer().symbols(QgsRenderContext()) # todo which context ?
symbols[0].setColor(self.settings.getColor())
feature = QgsFeature()
feature.setGeometry(g)
feature.setAttributes([name])
layer.dataProvider().addFeatures([feature])
layer.commitChanges()
pjt.addMapLayer(layer)
self.iface.mapCanvas().refresh()
self.dlg.comboBox_layers.currentIndexChanged.disconnect()
self.refreshLayer()
self.selectNewlyDrawnLayer()
self.dlg.comboBox_layers.currentIndexChanged.connect(lambda: self.handleLayerSelection())
self.updateSelectContent()
self.setUpCaller(layerName="geo_enrichment_polygon")
self.tool.reset()
self.resetSB()
self.bGeom = None
def retrievePolygonLayers(self):
layers = QgsProject.instance().mapLayers().values()
self.dlg.comboBox_layers.clear()
self.dlg.comboBox_layers.addItem("--- Active Layers ---")
for layer in layers:
if ( layer.type() == QgsMapLayer.VectorLayer and layer.geometryType() == QgsWkbTypes.PolygonGeometry):
self.dlg.comboBox_layers.addItem(layer.name())
self.dlg.comboBox_layers.currentIndexChanged.connect(lambda: self.handleLayerSelection())
def handleLayerSelection(self):
self.selectedLayername = self.dlg.comboBox_layers.currentText()
# enable the select content button
self.updateSelectContent()
self.setUpCaller(layerName=self.selectedLayername)
def getInputs(self, layerName=None):
params = {}
endPointKey = self.dlg.comboBox_graph.currentText()
params["end_point"] = self.kwg_endpoint_dict[endPointKey]
if layerName:
params["wkt_literal"] = self.performWKTConversion(layerName)
else:
params["wkt_literal"] = self.performWKTConversion()
return params
def setUpCaller(self, layerName=None):
if self.contentCounter == 0:
if layerName:
self.params = self.getInputs(layerName)
else:
self.params = self.getInputs()
self.params["ifaceObj"] = self.iface
self.enrichmentObjBuffer = list()
self.enrichmentObjBuffer.append(kwg_pluginEnrichmentDialog())
self.enrichmentObjBuffer[self.contentCounter].setParams(self.params)
worker = Worker(self.enrichmentObjBuffer, self.contentCounter)
self.threadpool.start(worker)
else:
s2Cells = self.enrichmentObjBuffer[0].get_s2Cells()
entityLi = self.enrichmentObjBuffer[0].get_entityLi()
spoDict = self.enrichmentObjBuffer[0].get_spoDict()
self.enrichmentObjBuffer.append(kwg_pluginEnrichmentDialog(s2Cells=s2Cells, entityLi=entityLi, spoDict=spoDict, params=self.params))
def addContent(self):
if self.disableSelectContent:
self.displayButtonHelp()
return
# not first run
if self.contentCounter > 0:
self.setUpCaller()
self.dlg.pushButton_content.setText("Searching area...")
self.dlg.hide()
self.enrichmentObjBuffer[self.contentCounter].show()
self.enrichmentObjBuffer[self.contentCounter].pushButton_save.clicked.connect(self.saveContent)
self.contentCounter += 1
return
def refreshLayer(self):
layers = QgsProject.instance().mapLayers().values()
currentItems = [self.dlg.comboBox_layers.itemText(i) for i in range(self.dlg.comboBox_layers.count())]
for layer in layers:
if (layer.type() == QgsMapLayer.VectorLayer and layer.geometryType() == QgsWkbTypes.PolygonGeometry):
if layer.name() not in currentItems:
self.dlg.comboBox_layers.addItem(layer.name())
def selectNewlyDrawnLayer(self, layerName="geo_enrichment_polygon"):
index = self.dlg.comboBox_layers.findText(layerName)
if index >= 0:
self.dlg.comboBox_layers.setCurrentIndex(index)
def saveContent(self):
self.dlg.pushButton_content.setText("Select Content")
i = self.enrichmentObjBuffer[self.contentCounter - 1].degreeCount
selectedVal = []
for it in range(i):
if (self.enrichmentObjBuffer[self.contentCounter - 1].tableWidget.cellWidget(it, 0).currentText() != "--- SELECT ---"):
selectedVal.append(self.enrichmentObjBuffer[self.contentCounter - 1].tableWidget.cellWidget(it, 0).currentText())
if (self.enrichmentObjBuffer[self.contentCounter - 1].tableWidget.cellWidget(it, 1).currentText() != "--- SELECT ---"):
selectedVal.append(self.enrichmentObjBuffer[self.contentCounter - 1].tableWidget.cellWidget(it, 1).currentText())
if (self.enrichmentObjBuffer[self.contentCounter - 1].tableWidget.cellWidget(i - 1,
2).currentText() != "--- SELECT ---"):
selectedVal.append(self.enrichmentObjBuffer[self.contentCounter - 1].tableWidget.cellWidget(i - 1, 2).currentText())
if selectedVal[-1] == "LITERAL" or selectedVal[-1] == "--- SELECT ---":
if selectedVal[0] not in self.selectedValDict:
self.selectedValDict[selectedVal[0]] = []
self.selectedValDict[selectedVal[0]].append(selectedVal[-2])
else:
if selectedVal[0] not in self.selectedValDict:
self.selectedValDict[selectedVal[0]] = []
self.selectedValDict[selectedVal[0]] = selectedVal[-1]
stringVal = " -> ".join(selectedVal)
x, y = self.getPosition(self.dlg.pushButton_content)
self.enrichmentObjBuffer[self.contentCounter - 1].close()
# add properties and merge options
self.displaySelectedContent(selectedVal, x, y, i=self.contentCounter - 1)
self.enableRunButton()
return
def getPosition(self, obj):
return obj.pos().x(), obj.pos().y()
def displaySelectedContent(self, selectedVal, x, y, i=0):
stringVal = " -> ".join(selectedVal)
# add label
label = QLabel(stringVal, self.dlg)
label.move(x + 1, y)
label.setAccessibleName("label_%s" % (i))
label.setObjectName("label_%s" % (i))
label.setStyleSheet("background-color: #9AB4D2;")
self.labelObjBuffer.append(label)
# add text box
lineEdit = QLineEdit(self.dlg)
lineEdit.move(x + 1, y + 25)
lineEdit.resize(200, 25)
if selectedVal[-1] == "LITERAL":
lineEdit.setText(selectedVal[-2])
else:
lineEdit.setText(selectedVal[-1])
lineEdit.setAccessibleName("lineEdit_%s" % (i))
lineEdit.setObjectName("lineEdit_%s" % (i))
self.lineObjBuffer.append(lineEdit)
# add dropdown
comboBox = QComboBox(self.dlg)
for txt in [
"1 - Get the first value found",
"2 - Concate values together with a '|'",
"3 - Get the number of values found",
"4 - Get the average of all values (numeric)",
"5 - Get the highest value (numeric)",
"6 - Get the lowest value (numeric)",
"7 - Get the standard deviation of all values (numeric)",
"8 - Get the total of all values (numeric)"
]:
comboBox.addItem(txt)
comboBox.move(x + 221, y + 25)
comboBox.resize(320, 25)
comboBox.setAccessibleName("comboBox_%s" % (i))
comboBox.setObjectName("comboBox_%s" % (i))
button = QPushButton(self.dlg)
icon = QIcon(":/plugins/kwg_geoenrichment/resources/delete.png")
button.setIcon(icon)
button.move(x + 559, y + 25)
button.resize(32, 25)
button.released.connect(lambda: self.manageContent(i))
button.setStyleSheet("background-color: transparent; color: #ffffff; border: none;")
button.setAccessibleName("delete_%s" % (i))
button.setObjectName("delete_%s" % (i))
self.deleteObjBuffer.append(button)
self.comboBoxBuffer.append(comboBox)
self.dlg.pushButton_content.move(x + 1, y + 55)
def manageContent(self, buttonIdx):
# handle deletion for PYQT widgets
buttonDelete = self.dlg.findChild(QPushButton, "delete_%s" % (buttonIdx))
comboBoxDelete = self.dlg.findChild(QComboBox, "comboBox_%s" % (buttonIdx))
lineDelete = self.dlg.findChild(QLineEdit, "lineEdit_%s" % (buttonIdx))
labelDelete = self.dlg.findChild(QLabel, "label_%s" % (buttonIdx))
buttonDelete.deleteLater()
comboBoxDelete.deleteLater()
lineDelete.deleteLater()
labelDelete.deleteLater()
# update selected val dict
label_val = self.labelObjBuffer[buttonIdx].text().split(" -> ")[0]
line_val = self.lineObjBuffer[buttonIdx].text()
self.selectedValDict[label_val].remove(line_val)
# remove the objects from the buffer
del self.enrichmentObjBuffer[buttonIdx]
del self.labelObjBuffer[buttonIdx]
del self.lineObjBuffer[buttonIdx]
del self.comboBoxBuffer[buttonIdx]
del self.deleteObjBuffer[buttonIdx]
# decrement content counter
self.contentCounter -= 1
if self.contentCounter == 0:
self.disableRun = True
return
def handleRun(self):
if self.disableRun:
self.displayButtonHelp()
return
subtype_count = 0
for subtype in self.selectedValDict:
results = []
objName = []
mergeRuleNo = []
for i in range(len(self.selectedValDict[subtype])):
results.append(self.enrichmentObjBuffer[subtype_count + i].getResults())
objName.append(self.lineObjBuffer[subtype_count + i].text())
layerName = self.dlg.lineEdit_layerName.text()
mergeRule = self.comboBoxBuffer[subtype_count + i].currentText()
mergeRuleNo.append(int(mergeRule.split(" - ")[0]))
subtype_count = subtype_count + len(self.selectedValDict[subtype])
self.createGeoPackage(results, subtype, objName, layerName, mergeRule=mergeRuleNo, out_path=self.path)
self.dlg.close()
self.enrichmentObjBuffer = list()
self.contentCounter = 0
def performWKTConversion(self, layerName="geo_enrichment_polygon"):
layers = QgsProject.instance().mapLayers().values()
wkt_li = []
wkt_rep_li = []
# crs = QgsCoordinateReferenceSystem("EPSG:4326")
for layer in layers:
if layer.name() == layerName:
feat = layer.getFeatures()
for f in feat:
geom = f.geometry()
# TODO: handle the CRS
# geom = self.transformSourceCRStoDestinationCRS(geom)
wkt_li.append(geom.asWkt())
for wkt in wkt_li:
wkt_literal_list = wkt.split(" ", 1)
wkt_rep_li.append(self.convertGeometry(wkt_literal_list[0].upper() + wkt_literal_list[1]))
return wkt_rep_li
def convertGeometry(self, wkt):
"""
Converts a wkt from multipolygon to polygon
"""
if "MULTIPOLYGON" in wkt:
new_wkt = "POLYGON((%s))"%wkt[15:-3]
return new_wkt
return wkt
def transformSourceCRStoDestinationCRS(self, geom, src=3857, dest=4326):
src_crs = QgsCoordinateReferenceSystem(src)
dest_crs = QgsCoordinateReferenceSystem(dest)
geom_converter = QgsCoordinateTransform(src_crs, dest_crs, QgsProject.instance())
geom_reproj = geom_converter.transform(geom)
return geom_reproj
def createGeoPackage(self, GeoQueryResult, subtype='', objName=[], layerName="geo_results", mergeRule = [],
out_path=None, input_Layer = None):
'''
GeoQueryResult: a sparql query result json obj serialized as a list of dict()
SPARQL query like this:
select distinct ?place ?placeLabel ?placeFlatType ?wkt
where
{...}
out_path: the output path for the create geo feature class
inPlaceType: the label of user spercified type IRI
selectedURL: the user spercified type IRI
isDirectInstance: True: use placeFlatType as the type of geo-entity
False: use selectedURL as the type of geo-entity
'''
# a set of unique WKT for each found places
out_path += ".gpkg"
if input_Layer == None:
input_Layer = self.selectedLayername
entityDict = {}
for idx in range(len(objName)):
tempDict = self.generateRecord(GeoQueryResult[idx], mergeRule[idx])
for gtype in tempDict:
if gtype not in entityDict:
entityDict[gtype] = {}
for eValue in tempDict[gtype]:
if eValue not in entityDict[gtype]:
entityDict[gtype][eValue] = {}
entityDict[gtype][eValue]["entityLabel"] = tempDict[gtype][eValue]["entityLabel"]
entityDict[gtype][eValue][objName[idx]] = tempDict[gtype][eValue]["o"]
entityDict[gtype][eValue]["wkt"] = tempDict[gtype][eValue]["wkt"]
else:
entityDict[gtype][eValue][objName[idx]] = tempDict[gtype][eValue]["o"]
entityDict[gtype][eValue]["wkt"] = self.updateWkt(gtype, entityDict[gtype][eValue]["wkt"], tempDict[gtype][eValue]["wkt"])
for gtype in entityDict:
layerFields = QgsFields()
layerFields.append(QgsField('entity', QVariant.String))
layerFields.append(QgsField('entityLabel', QVariant.String))
for obj in objName:
layerFields.append(QgsField(obj, QVariant.String))
objList = []
for entity in entityDict[gtype]:
record = []
record.append(entity)
record.append(entityDict[gtype][entity]["entityLabel"])
for obj in objName:
if obj in entityDict[gtype][entity]:
record.append(entityDict[gtype][entity][obj])
else:
record.append("")
record.append(entityDict[gtype][entity]["wkt"])
objList.append(record)
vl = QgsVectorLayer(gtype + "?crs=epsg:4326", "%s_%s_%s"%(layerName, subtype, gtype), "memory")
pr = vl.dataProvider()
pr.addAttributes(layerFields)
vl.updateFields()
if gtype == "LineString":
vl.renderer().symbol().setWidth(1.2)
if len(objList) == 0:
QgsMessageLog.logMessage("No results found!",
level=Qgis.Info)
else:
if out_path == None:
QgsMessageLog.logMessage("No data will be added to the map document.", level=Qgis.Info)
else:
vl.startEditing()
for item in objList:
wkt_literal = item[-1]
wkt = wkt_literal.replace("<http://www.opengis.net/def/crs/OGC/1.3/CRS84>", "")
feat = QgsFeature()
geom = QgsGeometry.fromWkt(wkt)
feat.setGeometry(geom)
# check if we need to discard this polygon
matchFound = False
for layer in QgsProject.instance().mapLayers().values():
if layer.name() == input_Layer:
ft = layer.getFeatures()
for f in ft:
geom_poly = f.geometry()
if gtype == "Point":
if geom_poly.contains(geom):
matchFound = True
if gtype == "LineString":
if geom_poly.intersects(geom):
matchFound = True
if gtype == "Polygon":
if geom_poly.intersects(geom):
matchFound = True
if not matchFound:
continue
feat.setAttributes(item[0:-1])
vl.addFeature(feat)
vl.endEditCommand()
vl.commitChanges()
vl.updateExtents()
options = QgsVectorFileWriter.SaveVectorOptions()
options.layerName = "%s_%s_%s"%(layerName, subtype, gtype)
context = QgsProject.instance().transformContext()
error = QgsVectorFileWriter.writeAsVectorFormatV2(vl, out_path, context, options)
QgsProject.instance().addMapLayer(vl)
return error[0] == QgsVectorFileWriter.NoError
def generateRecord(self, GeoQueryResult = {}, mergeRule = 1):
util_obj = UTIL()
entityDict= {}
for idx, item in enumerate(GeoQueryResult):
wkt_literal = item["wkt"]["value"]
geom_type = util_obj.get_geometry_type_from_wkt(wkt_literal)
entityVal = item["entity"]["value"]
entityLabelVal = item["entityLabel"]["value"]
entityOVal = item['o']["value"]
if geom_type != "0":
if geom_type not in entityDict:
entityDict[geom_type] = {}
if entityVal not in entityDict[geom_type]:
entityDict[geom_type][entityVal] = {}
entityDict[geom_type][entityVal]["entityLabel"] = entityLabelVal
entityDict[geom_type][entityVal]["o"] = []
entityDict[geom_type][entityVal]["o"].append(entityOVal)
entityDict[geom_type][entityVal]["wkt"] = wkt_literal
else:
entityDict[geom_type][entityVal]["entityLabel"] = entityLabelVal
entityDict[geom_type][entityVal]["o"].append(entityOVal)
entityDict[geom_type][entityVal]["wkt"] = wkt_literal
else:
self.logger.info("Geometry not found; expunging record")
entityDict = self.generateFormattedEntityDict(entityDict, mergeRule)
return entityDict
def updateWkt(self, gtype, wkt1, wkt2):
if wkt1 == wkt2:
return wkt1
if (wkt1.startswith("MULTI")):
wktstr = wkt1[:-1]
wktstr += "," + wkt2[len(gtype):] + ")"
else:
wktstr = "MULTI" + gtype.upper() + "(%s,%s)" % (wkt1[len(gtype):], wkt2[len(gtype):])
return wktstr
def generateFormattedEntityDict(self, entityDict = {}, mergeRule = 1):
isAlpha = False