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pgRoutingLayer.py
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pgRoutingLayer.py
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# -*- coding: utf-8 -*-
# /*PGR-GNU*****************************************************************
# File: pgRoutingLayer.py
#
# Copyright (c) 2011~2019 pgRouting developers
# Mail: project@pgrouting.org
#
# Developer's GitHub nickname:
# - AasheeshT
# - cayetanobv
# - sanak
# - veniversum
# - cvvergara
# - anitagraser
# ------
#
# 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.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
# ********************************************************************PGR-GNU*/
from __future__ import absolute_import
# Import the PyQt and QGIS libraries
from qgis.PyQt import uic
from qgis.PyQt.QtCore import Qt, QRegExp, QSettings, QUrl
from qgis.PyQt.QtGui import QColor, QIcon, QIntValidator, QDoubleValidator, QRegExpValidator, QCursor
from qgis.PyQt.QtWidgets import QAction, QApplication, QMessageBox
from qgis.core import QgsRectangle, QgsCoordinateReferenceSystem, QgsCoordinateTransform
from qgis.core import QgsProject, QgsGeometry, QgsWkbTypes
from qgis.core import Qgis
from qgis.gui import QgsVertexMarker, QgsRubberBand, QgsMapToolEmitPoint
from pgRoutingLayer import dbConnection
from pgRoutingLayer.connectors.postgis import DbError as PgDbError
from pgRoutingLayer import pgRoutingLayer_utils as Utils
from pgRoutingLayer.utilities import pgr_queries as PgrQ
import os
import psycopg2
from psycopg2 import sql
import re
from PyQt5.QtGui import QDesktopServices
conn = dbConnection.ConnectionManager()
class PgRoutingLayer:
SUPPORTED_FUNCTIONS = [
'pgr_aStar',
'pgr_aStarCost',
'pgr_bdAstar',
'pgr_bdAstarCost',
'pgr_bdDijkstra',
'pgr_bdDijkstraCost',
'pgr_dijkstra',
'pgr_dijkstraCost',
'pgr_KSP',
]
TOGGLE_CONTROL_NAMES = [
'labelId', 'lineEditId',
'labelSource', 'lineEditSource',
'labelTarget', 'lineEditTarget',
'labelCost', 'lineEditCost',
'labelReverseCost', 'lineEditReverseCost',
'labelX1', 'lineEditX1',
'labelY1', 'lineEditY1',
'labelX2', 'lineEditX2',
'labelY2', 'lineEditY2',
'labelAstarHeuristic', 'selectAstarHeuristic',
'labelAstarFactor', 'selectAstarFactor',
'labelAstarEpsilon', 'selectAstarEpsilon', 'showAstarEpsilon',
# 'labelRule', 'lineEditRule',
# 'labelToCost', 'lineEditToCost',
'labelIds', 'lineEditIds', 'buttonSelectIds',
'labelPcts', 'lineEditPcts',
'labelSourceId', 'lineEditSourceId', 'buttonSelectSourceId',
'labelSourceIds', 'lineEditSourceIds', 'buttonSelectSourceIds',
'labelSourcePos', 'lineEditSourcePos',
'labelTargetId', 'lineEditTargetId', 'buttonSelectTargetId',
'labelTargetIds', 'lineEditTargetIds', 'buttonSelectTargetIds',
'labelTargetPos', 'lineEditTargetPos',
'labelDistance', 'lineEditDistance',
'labelAlpha', 'lineEditAlpha',
'labelPaths', 'lineEditPaths',
'checkBoxDirected',
'checkBoxHasReverseCost',
'checkBoxHeapPaths',
'checkBoxUseBBOX',
'labelTurnRestrictSql', 'plainTextEditTurnRestrictSql',
# 'checkBoxDetails',
# 'label_pointsTable','lineEditPointsTable',
# 'labelPid', 'lineEditPid', 'labelEdge_id', 'lineEditEdge_id',
# 'labelFraction', 'lineEditFraction', 'labelSide', 'lineEditSide','labelDrivingSide','checkBoxLeft','checkBoxRight'
]
ASTAR_HEURISTICS = [
'= 0',
'= abs(max(dx, dy))',
'= abs(min(dx, dy))',
'= dx * dx + dy * dy',
'= sqrt(dx * dx + dy * dy)',
'= abs(dx) + abs(dy)',
]
FIND_RADIUS = 10
FRACTION_DECIMAL_PLACES = 2
version = 2.6
functions = {}
def __init__(self, iface):
# Save reference to the QGIS interface
self.iface = iface
self.idsVertexMarkers = []
self.targetIdsVertexMarkers = []
self.sourceIdsVertexMarkers = []
self.sourceIdVertexMarker = QgsVertexMarker(self.iface.mapCanvas())
self.sourceIdVertexMarker.setColor(Qt.blue)
self.sourceIdVertexMarker.setPenWidth(2)
self.sourceIdVertexMarker.setVisible(False)
self.targetIdVertexMarker = QgsVertexMarker(self.iface.mapCanvas())
self.targetIdVertexMarker.setColor(Qt.green)
self.targetIdVertexMarker.setPenWidth(2)
self.targetIdVertexMarker.setVisible(False)
self.idsRubberBands = []
self.sourceIdRubberBand = QgsRubberBand(self.iface.mapCanvas(), Utils.getRubberBandType(False))
self.sourceIdRubberBand.setColor(Qt.cyan)
self.sourceIdRubberBand.setWidth(4)
self.targetIdRubberBand = QgsRubberBand(self.iface.mapCanvas(), Utils.getRubberBandType(False))
self.targetIdRubberBand.setColor(Qt.yellow)
self.targetIdRubberBand.setWidth(4)
self.canvasItemList = {}
self.canvasItemList['markers'] = []
self.canvasItemList['annotations'] = []
self.canvasItemList['paths'] = []
resultPathRubberBand = QgsRubberBand(self.iface.mapCanvas(), Utils.getRubberBandType(False))
resultPathRubberBand.setColor(QColor(255, 0, 0, 128))
resultPathRubberBand.setWidth(4)
self.canvasItemList['path'] = resultPathRubberBand
resultAreaRubberBand = QgsRubberBand(self.iface.mapCanvas(), Utils.getRubberBandType(True))
resultAreaRubberBand.setColor(Qt.magenta)
resultAreaRubberBand.setWidth(2)
resultAreaRubberBand.setBrushStyle(Qt.Dense4Pattern)
self.canvasItemList['area'] = resultAreaRubberBand
def initGui(self):
# Create action that will start plugin configuration
self.action = QAction(QIcon(":/plugins/pgRoutingLayer/icon.png"), "pgRouting Layer", self.iface.mainWindow())
# Add toolbar button and menu item
self.iface.addPluginToDatabaseMenu("&pgRouting Layer", self.action)
# load the form
path = os.path.dirname(os.path.abspath(__file__))
self.dock = uic.loadUi(os.path.join(path, "ui_pgRoutingLayer.ui"))
self.iface.addDockWidget(Qt.RightDockWidgetArea, self.dock)
self.idsEmitPoint = QgsMapToolEmitPoint(self.iface.mapCanvas())
self.sourceIdEmitPoint = QgsMapToolEmitPoint(self.iface.mapCanvas())
self.targetIdEmitPoint = QgsMapToolEmitPoint(self.iface.mapCanvas())
self.sourceIdsEmitPoint = QgsMapToolEmitPoint(self.iface.mapCanvas())
self.targetIdsEmitPoint = QgsMapToolEmitPoint(self.iface.mapCanvas())
# connect the action to each method
self.action.triggered.connect(self.show)
self.dock.buttonReloadConnections.clicked.connect(self.reloadConnections)
self.dock.comboConnections.currentIndexChanged.connect(self.updateConnectionEnabled)
self.dock.comboBoxFunction.currentIndexChanged.connect(self.updateFunctionEnabled)
self.dock.buttonSelectIds.clicked.connect(self.selectIds)
self.idsEmitPoint.canvasClicked.connect(self.setIds)
# One source id can be selected in some functions/version
self.dock.buttonSelectSourceId.clicked.connect(self.selectSourceId)
self.sourceIdEmitPoint.canvasClicked.connect(self.setSourceId)
self.dock.buttonSelectTargetId.clicked.connect(self.selectTargetId)
self.targetIdEmitPoint.canvasClicked.connect(self.setTargetId)
# Function help
self.dock.buttonFunctionHelp.clicked.connect(self.openHelp)
# More than one source id can be selected in some functions/version
self.dock.buttonSelectSourceIds.clicked.connect(self.selectSourceIds)
self.sourceIdsEmitPoint.canvasClicked.connect(self.setSourceIds)
self.dock.buttonSelectTargetIds.clicked.connect(self.selectTargetIds)
self.targetIdsEmitPoint.canvasClicked.connect(self.setTargetIds)
self.dock.checkBoxHasReverseCost.stateChanged.connect(self.updateReverseCostEnabled)
self.dock.buttonRun.clicked.connect(self.run)
self.dock.buttonExport.clicked.connect(self.export)
self.dock.buttonExportMerged.clicked.connect(self.exportMerged)
self.dock.buttonClear.clicked.connect(self.clear)
self.prevType = None
self.functions = {}
for funcfname in self.SUPPORTED_FUNCTIONS:
# import the function
exec("from pgRoutingLayer.functions import %s as function" % funcfname, globals(), globals())
funcname = function.Function.getName()
self.functions[funcname] = function.Function(self.dock)
self.dock.comboBoxFunction.addItem(funcname)
for heuristic in self.ASTAR_HEURISTICS:
self.dock.selectAstarHeuristic.addItem(heuristic)
self.dock.selectAstarEpsilon.setMinimum(0)
self.dock.selectAstarEpsilon.setMinimum(1)
self.dock.selectAstarEpsilon.valueChanged.connect(self.astarEpsilonChanged)
self.dock.lineEditIds.setValidator(QRegExpValidator(QRegExp("[0-9,]+"), self.dock))
self.dock.lineEditPcts.setValidator(QRegExpValidator(QRegExp("[0-9,.]+"), self.dock))
self.dock.lineEditSourceId.setValidator(QIntValidator())
self.dock.lineEditTargetId.setValidator(QIntValidator())
self.dock.lineEditSourcePos.setValidator(QDoubleValidator(0.0, 1.0, 10, self.dock))
self.dock.lineEditTargetPos.setValidator(QDoubleValidator(0.0, 1.0, 10, self.dock))
self.dock.lineEditTargetIds.setValidator(QRegExpValidator(QRegExp("[0-9,]+"), self.dock))
self.dock.lineEditSourceIds.setValidator(QRegExpValidator(QRegExp("[0-9,]+"), self.dock))
self.dock.lineEditDistance.setValidator(QDoubleValidator())
self.dock.lineEditAlpha.setValidator(QDoubleValidator())
self.dock.lineEditPaths.setValidator(QIntValidator())
# populate the combo with connections
self.reloadMessage = False
self.reloadConnections()
self.loadSettings()
Utils.logMessage("startup version " + str(self.version))
self.reloadMessage = True
def show(self):
self.iface.addDockWidget(Qt.LeftDockWidgetArea, self.dock)
def unload(self):
''' Removes the plugin menu item and icon'''
self.clear()
self.saveSettings()
# Remove the plugin menu item and icon
self.iface.removePluginDatabaseMenu("&pgRouting Layer", self.action)
self.iface.removeDockWidget(self.dock)
def reloadConnections(self):
''' Reloads the connection with database. '''
oldReloadMessage = self.reloadMessage
self.reloadMessage = False
database = str(self.dock.comboConnections.currentText())
self.dock.comboConnections.clear()
actions = conn.getAvailableConnections()
self.actionsDb = {}
for a in actions:
self.actionsDb[str(a.text())] = a
for dbname in self.actionsDb:
db = None
try:
db = self.actionsDb[dbname].connect()
con = db.con
if (Utils.getPgrVersion(con) != 0):
self.dock.comboConnections.addItem(dbname)
except PgDbError as e:
Utils.logMessage("dbname:" + dbname + ", " + e.msg, Qgis.Critical)
finally:
if db and db.con:
db.con.close()
idx = self.dock.comboConnections.findText(database)
if idx >= 0:
self.dock.comboConnections.setCurrentIndex(idx)
else:
self.dock.comboConnections.setCurrentIndex(0)
self.reloadMessage = oldReloadMessage
self.updateConnectionEnabled()
def updateConnectionEnabled(self):
''' Updates the database connection name and function '''
dbname = str(self.dock.comboConnections.currentText())
if dbname == '':
return
db = self.actionsDb[dbname].connect()
con = db.con
self.version = Utils.getPgrVersion(con)
if self.reloadMessage:
QMessageBox.information(self.dock, self.dock.windowTitle(),
'Selected database: ' + dbname + '\npgRouting version: ' + str(self.version))
currentFunction = str(self.dock.comboBoxFunction.currentText())
if currentFunction == ' ':
return
self.loadFunctionsForVersion()
self.updateFunctionEnabled(currentFunction)
def loadFunctionsForVersion(self):
''' Loads function names based on pgr version. '''
currentText = str(self.dock.comboBoxFunction.currentText())
self.dock.comboBoxFunction.clear()
# for funcname, function in self.functions.items():
for funcname in self.functions:
function = self.functions[funcname]
if (function.isSupportedVersion(self.version)):
self.dock.comboBoxFunction.addItem(function.getName())
idx = self.dock.comboBoxFunction.findText(currentText)
if idx >= 0:
self.dock.comboBoxFunction.setCurrentIndex(idx)
def updateFunctionEnabled(self, text):
''' Updates the GUI fields of the selected function. '''
text = str(self.dock.comboBoxFunction.currentText())
if text == '':
return
self.clear()
function = self.functions.get(str(text))
self.toggleSelectButton(None)
for controlName in self.TOGGLE_CONTROL_NAMES:
control = getattr(self.dock, controlName)
control.setVisible(False)
for controlName in function.getControlNames(self.version):
control = getattr(self.dock, controlName)
control.setVisible(True)
# for initial display
self.dock.gridLayoutSqlColumns.invalidate()
self.dock.gridLayoutArguments.invalidate()
if (not self.dock.checkBoxHasReverseCost.isChecked()) or (not self.dock.checkBoxHasReverseCost.isEnabled()):
self.dock.lineEditReverseCost.setEnabled(False)
# if type(edge/node) changed, clear input
if (self.prevType is not None) and (self.prevType != function.isEdgeBase()):
self.clear()
self.prevType = function.isEdgeBase()
canExport = function.canExport()
self.dock.buttonExport.setEnabled(canExport)
canExportMerged = function.canExportMerged()
self.dock.buttonExportMerged.setEnabled(canExportMerged)
def selectIds(self, checked):
''' Selects the ids and dispaly on lineEdit. '''
if checked:
self.toggleSelectButton(self.dock.buttonSelectIds)
self.dock.lineEditIds.setText("")
self.dock.lineEditPcts.setText("")
if len(self.idsVertexMarkers) > 0:
for marker in self.idsVertexMarkers:
marker.setVisible(False)
self.idsVertexMarkers = []
if len(self.idsRubberBands) > 0:
for rubberBand in self.idsRubberBands:
rubberBand.reset(Utils.getRubberBandType(False))
self.idsRubberBands = []
self.iface.mapCanvas().setMapTool(self.idsEmitPoint)
else:
self.iface.mapCanvas().unsetMapTool(self.idsEmitPoint)
def setIds(self, pt):
''' Sets the ids on mapCanvas with color '''
function = self.functions[str(self.dock.comboBoxFunction.currentText())]
args = self.getArguments()
mapCanvas = self.iface.mapCanvas()
if not function.isEdgeBase():
result, the_id, wkt = self.findNearestNode(args, pt)
if result:
ids = self.dock.lineEditIds.text()
if not ids:
self.dock.lineEditIds.setText(str(the_id))
else:
self.dock.lineEditIds.setText(ids + "," + str(the_id))
geom = QgsGeometry().fromWkt(wkt)
vertexMarker = QgsVertexMarker(mapCanvas)
vertexMarker.setColor(Qt.green)
vertexMarker.setPenWidth(2)
vertexMarker.setCenter(geom.asPoint())
self.idsVertexMarkers.append(vertexMarker)
else:
result, the_id, wkt, pos, pointWkt = self.findNearestLink(args, pt)
if result:
ids = self.dock.lineEditIds.text()
if not ids:
self.dock.lineEditIds.setText(str(the_id))
else:
self.dock.lineEditIds.setText(ids + "," + str(the_id))
geom = QgsGeometry().fromWkt(wkt)
idRubberBand = QgsRubberBand(mapCanvas, Utils.getRubberBandType(False))
idRubberBand.setColor(Qt.yellow)
idRubberBand.setWidth(4)
if geom.wkbType() == QgsWkbTypes.MultiLineString:
for line in geom.asMultiPolyline():
for pt in line:
idRubberBand.addPoint(pt)
elif geom.wkbType() == QgsWkbTypes.LineString:
for pt in geom.asPolyline():
idRubberBand.addPoint(pt)
self.idsRubberBands.append(idRubberBand)
pcts = self.dock.lineEditPcts.text()
if not pcts:
self.dock.lineEditPcts.setText(str(pos))
else:
self.dock.lineEditPcts.setText(pcts + "," + str(pos))
pointGeom = QgsGeometry().fromWkt(pointWkt)
vertexMarker = QgsVertexMarker(mapCanvas)
vertexMarker.setColor(Qt.green)
vertexMarker.setPenWidth(2)
vertexMarker.setCenter(pointGeom.asPoint())
self.idsVertexMarkers.append(vertexMarker)
Utils.refreshMapCanvas(mapCanvas)
def selectSourceId(self, checked):
''' Selects the source id and dispaly its value on lineEdit. '''
if checked:
self.toggleSelectButton(self.dock.buttonSelectSourceId)
self.dock.lineEditSourceId.setText("")
self.sourceIdVertexMarker.setVisible(False)
self.sourceIdRubberBand.reset(Utils.getRubberBandType(False))
self.iface.mapCanvas().setMapTool(self.sourceIdEmitPoint)
else:
self.iface.mapCanvas().unsetMapTool(self.sourceIdEmitPoint)
def setSourceId(self, pt):
''' Sets the source id by finding nearest node and displays in mapCanvas with color '''
function = self.functions[str(self.dock.comboBoxFunction.currentText())]
args = self.getArguments()
if not function.isEdgeBase():
result, source_id, wkt = self.findNearestNode(args, pt)
if result:
self.dock.lineEditSourceId.setText(str(source_id))
geom = QgsGeometry().fromWkt(wkt)
self.sourceIdVertexMarker.setCenter(geom.asPoint())
self.sourceIdVertexMarker.setVisible(True)
self.dock.buttonSelectSourceId.click()
else:
result, source_id, wkt, pos, pointWkt = self.findNearestLink(args, pt)
if result:
self.dock.lineEditSourceId.setText(str(source_id))
geom = QgsGeometry().fromWkt(wkt)
if geom.wkbType() == QgsWkbTypes.MultiLineString:
for line in geom.asMultiPolyline():
for pt in line:
self.sourceIdRubberBand.addPoint(pt)
elif geom.wkbType() == QgsWkbTypes.LineString:
for pt in geom.asPolyline():
self.sourceIdRubberBand.addPoint(pt)
self.dock.lineEditSourcePos.setText(str(pos))
pointGeom = QgsGeometry().fromWkt(pointWkt)
self.sourceIdVertexMarker.setCenter(pointGeom.asPoint())
self.sourceIdVertexMarker.setVisible(True)
self.dock.buttonSelectSourceId.click()
Utils.refreshMapCanvas(self.iface.mapCanvas())
def selectSourceIds(self, checked):
''' Selects the source ids and dispaly its value on lineEdit. '''
if checked:
self.toggleSelectButton(self.dock.buttonSelectSourceIds)
self.dock.lineEditSourceIds.setText("")
if len(self.sourceIdsVertexMarkers) > 0:
for marker in self.sourceIdsVertexMarkers:
marker.setVisible(False)
self.sourceIdsVertexMarkers = []
self.iface.mapCanvas().setMapTool(self.sourceIdsEmitPoint)
else:
self.iface.mapCanvas().unsetMapTool(self.sourceIdsEmitPoint)
def setSourceIds(self, pt):
''' Sets the source id by finding nearest node and displays in mapCanvas with color '''
args = self.getArguments()
result, source_id, wkt = self.findNearestNode(args, pt)
if result:
ids = self.dock.lineEditSourceIds.text()
if not ids:
self.dock.lineEditSourceIds.setText(str(source_id))
else:
self.dock.lineEditSourceIds.setText(ids + "," + str(source_id))
geom = QgsGeometry().fromWkt(wkt)
mapCanvas = self.iface.mapCanvas()
vertexMarker = QgsVertexMarker(mapCanvas)
vertexMarker.setColor(Qt.blue)
vertexMarker.setPenWidth(2)
vertexMarker.setCenter(geom.asPoint())
self.sourceIdsVertexMarkers.append(vertexMarker)
Utils.refreshMapCanvas(mapCanvas)
def selectTargetId(self, checked):
''' Selects the target id and dispaly its value on lineEdit. '''
if checked:
self.toggleSelectButton(self.dock.buttonSelectTargetId)
self.dock.lineEditTargetId.setText("")
self.targetIdVertexMarker.setVisible(False)
self.targetIdRubberBand.reset(Utils.getRubberBandType(False))
self.iface.mapCanvas().setMapTool(self.targetIdEmitPoint)
else:
self.iface.mapCanvas().unsetMapTool(self.targetIdEmitPoint)
def setTargetId(self, pt):
''' Sets the target id by finding nearest node and displays in mapCanvas with color '''
function = self.functions[str(self.dock.comboBoxFunction.currentText())]
args = self.getArguments()
if not function.isEdgeBase():
result, target_id, wkt = self.findNearestNode(args, pt)
if result:
self.dock.lineEditTargetId.setText(str(target_id))
geom = QgsGeometry().fromWkt(wkt)
self.targetIdVertexMarker.setCenter(geom.asPoint())
self.targetIdVertexMarker.setVisible(True)
self.dock.buttonSelectTargetId.click()
else:
result, target_id, wkt, pos, pointWkt = self.findNearestLink(args, pt)
if result:
self.dock.lineEditTargetId.setText(str(target_id))
geom = QgsGeometry().fromWkt(wkt)
if geom.wkbType() == QgsWkbTypes.MultiLineString:
for line in geom.asMultiPolyline():
for pt in line:
self.targetIdRubberBand.addPoint(pt)
elif geom.wkbType() == QgsWkbTypes.LineString:
for pt in geom.asPolyline():
self.targetIdRubberBand.addPoint(pt)
self.dock.lineEditTargetPos.setText(str(pos))
pointGeom = QgsGeometry().fromWkt(pointWkt)
self.targetIdVertexMarker.setCenter(pointGeom.asPoint())
self.targetIdVertexMarker.setVisible(True)
self.dock.buttonSelectTargetId.click()
Utils.refreshMapCanvas(self.iface.mapCanvas())
def selectTargetIds(self, checked):
''' Selects the target ids and dispaly its value on lineEdit. '''
if checked:
self.toggleSelectButton(self.dock.buttonSelectTargetIds)
self.dock.lineEditTargetIds.setText("")
if len(self.targetIdsVertexMarkers) > 0:
for marker in self.targetIdsVertexMarkers:
marker.setVisible(False)
self.targetIdsVertexMarkers = []
self.iface.mapCanvas().setMapTool(self.targetIdsEmitPoint)
else:
self.iface.mapCanvas().unsetMapTool(self.targetIdsEmitPoint)
def setTargetIds(self, pt):
''' Sets the target ids by finding nearest node and displays in mapCanvas with color '''
args = self.getArguments()
result, targetId, wkt = self.findNearestNode(args, pt)
if result:
ids = self.dock.lineEditTargetIds.text()
if not ids:
self.dock.lineEditTargetIds.setText(str(targetId))
else:
self.dock.lineEditTargetIds.setText(ids + "," + str(targetId))
geom = QgsGeometry().fromWkt(wkt)
mapCanvas = self.iface.mapCanvas()
vertexMarker = QgsVertexMarker(mapCanvas)
vertexMarker.setColor(Qt.green)
vertexMarker.setPenWidth(2)
vertexMarker.setCenter(geom.asPoint())
self.targetIdsVertexMarkers.append(vertexMarker)
Utils.refreshMapCanvas(mapCanvas)
def astarEpsilonChanged(self, state):
'''
This method will be called when the epsilon slider is dragged by the user.
The value() of the slider ranges from 1-99
'''
size = self.dock.selectAstarEpsilon.value() / 100
self.dock.showAstarEpsilon.setText(str(size))
def updateReverseCostEnabled(self, state):
''' Updates the reverse cost checkBox '''
if state == Qt.Checked:
self.dock.lineEditReverseCost.setEnabled(True)
else:
self.dock.lineEditReverseCost.setEnabled(False)
def run(self):
""" Draws a Preview on the canvas"""
QApplication.setOverrideCursor(QCursor(Qt.WaitCursor))
db = None
try:
dbname = str(self.dock.comboConnections.currentText())
db = self.actionsDb[dbname].connect()
con = db.con
function = self.functions[str(self.dock.comboBoxFunction.currentText())]
args = self.getArguments()
empties = []
for key in list(args.keys()):
if key != 'srid' and not args[key]:
empties.append(key)
if len(empties) > 0:
QApplication.restoreOverrideCursor()
QMessageBox.warning(self.dock, self.dock.windowTitle(),
'Following argument is not specified.\n' + ','.join(empties))
return
version = Utils.getPgrVersion(con)
args['version'] = version
if (function.getName() == 'tsp(euclid)'):
args['node_query'] = PgrQ.getNodeQuery(args)
function.prepare(self.canvasItemList)
cur = con.cursor()
cur.execute(function.getQuery(args).as_string(con))
# QMessageBox.information(self.dock, self.dock.windowTitle(), 'Geometry Query:' +
# function.getQuery(args).as_string(con))
rows = cur.fetchall()
if len(rows) == 0:
QMessageBox.information(self.dock, self.dock.windowTitle(),
'No paths found in ' + self.getLayerName(args, con))
args['canvas_srid'] = Utils.getCanvasSrid(Utils.getDestinationCrs(self.iface.mapCanvas()))
Utils.setTransformQuotes(args, args['srid'], args['canvas_srid'])
function.draw(rows, con, args, args['geomType'], self.canvasItemList, self.iface.mapCanvas())
except psycopg2.DatabaseError as e:
QApplication.restoreOverrideCursor()
QMessageBox.critical(self.dock, self.dock.windowTitle(), '%s' % e)
except SystemError as e:
QApplication.restoreOverrideCursor()
QMessageBox.critical(self.dock, self.dock.windowTitle(), '%s' % e)
except AssertionError as e:
QApplication.restoreOverrideCursor()
QMessageBox.warning(self.dock, self.dock.windowTitle(), '%s' % e)
finally:
QApplication.restoreOverrideCursor()
if db and db.con:
try:
db.con.close()
except Exception:
QMessageBox.critical(self.dock, self.dock.windowTitle(),
'server closed the connection unexpectedly')
def export(self):
''' Exports the result layer '''
QApplication.setOverrideCursor(QCursor(Qt.WaitCursor))
db = None
try:
dbname = str(self.dock.comboConnections.currentText())
db = self.actionsDb[dbname].connect()
con = db.con
function = self.functions[str(self.dock.comboBoxFunction.currentText())]
args = self.getArguments()
empties = []
for key in list(args.keys()):
if key != 'srid' and not args[key]:
empties.append(key)
if len(empties) > 0:
QApplication.restoreOverrideCursor()
QMessageBox.warning(self.dock, self.dock.windowTitle(),
'Following argument is not specified.\n' + ','.join(empties))
return
version = Utils.getPgrVersion(con)
args['version'] = version
if (self.version != version):
QMessageBox.warning(self.dock, self.dock.windowTitle(),
'versions are different')
# get the EXPORT query
msgQuery = function.getExportQuery(args)
# Utils.logMessage('Export:\n' + msgQuery.as_string(con))
query = self.cleanQuery(msgQuery.as_string(con))
uri = db.getURI()
uri.setDataSource("", "(" + query + ")", "path_geom", "", "seq")
layerName = self.getLayerName(args, con)
vl = self.iface.addVectorLayer(uri.uri(), layerName, db.getProviderName())
if not vl:
QMessageBox.information(self.dock, self.dock.windowTitle(),
'Invalid Layer:\n - No paths found or\n - Failed to create vector layer from query')
except psycopg2.DatabaseError as e:
QApplication.restoreOverrideCursor()
QMessageBox.critical(self.dock, self.dock.windowTitle(), '%s' % e)
except SystemError as e:
QApplication.restoreOverrideCursor()
QMessageBox.critical(self.dock, self.dock.windowTitle(), '%s' % e)
finally:
QApplication.restoreOverrideCursor()
if db and db.con:
try:
db.con.close()
except Exception:
QMessageBox.critical(self.dock, self.dock.windowTitle(),
'server closed the connection unexpectedly')
@classmethod
def cleanQuery(cls, msgQuery):
''' Cleans the query '''
query = msgQuery.replace('\n', ' ')
query = re.sub(r'\s+', ' ', query)
query = query.replace('( ', '(')
query = query.replace(' )', ')')
query = query.strip()
return query
def getBBOX(self, srid):
"""
Returns the in ready to use args: BBOX , printBBOX
"""
bbox = {}
canvasCrs = Utils.getDestinationCrs(self.iface.mapCanvas())
canvasSrid = Utils.getCanvasSrid(canvasCrs)
bbox['srid'] = sql.Literal(canvasSrid)
bbox['prefix'] = sql.SQL("")
bbox['suffix'] = sql.SQL("")
if srid != canvasSrid:
if srid == 0:
bbox['prefix'] = sql.SQL("ST_SetSRID(")
else:
bbox['prefix'] = sql.SQL("ST_Transform(")
bbox['suffix'] = sql.SQL(", {})").format(sql.Literal(srid))
xMin = self.iface.mapCanvas().extent().xMinimum()
yMin = self.iface.mapCanvas().extent().yMinimum()
xMax = self.iface.mapCanvas().extent().xMaximum()
yMax = self.iface.mapCanvas().extent().yMaximum()
bbox['xMin'] = sql.Literal(xMin)
bbox['yMin'] = sql.Literal(yMin)
bbox['xMax'] = sql.Literal(xMax)
bbox['yMax'] = sql.Literal(yMax)
text = "BBOX(" + str(round(xMin, 2))
text += " " + str(round(yMin, 2))
text += "," + str(round(xMax, 2))
text += " " + str(round(yMax, 2)) + ")"
return sql.SQL("""
ST_MakeEnvelope(
{xMin}, {yMin},
{xMax}, {yMax}, {srid}
)
""").format(**bbox), text
def exportMerged(self):
''' exports the result layer with input layer '''
QApplication.setOverrideCursor(QCursor(Qt.WaitCursor))
db = None
try:
dbname = str(self.dock.comboConnections.currentText())
db = self.actionsDb[dbname].connect()
con = db.con
function = self.functions[str(self.dock.comboBoxFunction.currentText())]
args = self.getArguments()
empties = []
for key in list(args.keys()):
if key != 'srid' and not args[key]:
empties.append(key)
if len(empties) > 0:
QApplication.restoreOverrideCursor()
QMessageBox.warning(self.dock, self.dock.windowTitle(),
'Following argument is not specified.\n' + ','.join(empties))
return
version = Utils.getPgrVersion(con)
args['version'] = version
# get the exportMerge query
msgQuery = function.getExportMergeQuery(args)
Utils.logMessage('Export merged:\n' + msgQuery.as_string(con))
query = self.cleanQuery(msgQuery.as_string(con))
uri = db.getURI()
uri.setDataSource("", "(" + query + ")", "path_geom", "", "seq")
# add vector layer to map
layerName = self.getLayerName(args, con, 'M')
vl = self.iface.addVectorLayer(uri.uri(), layerName, db.getProviderName())
if not vl:
bigIntFunctions = [
'dijkstra',
'drivingDistance',
'ksp',
'alphaShape'
]
if function.getName() in bigIntFunctions:
QMessageBox.information(self.dock, self.dock.windowTitle(),
'Invalid Layer:\n - No paths found')
else:
QMessageBox.information(self.dock, self.dock.windowTitle(),
'Invalid Layer:\n - No paths found or\n - Failed to create vector layer from query')
except psycopg2.DatabaseError as e:
QApplication.restoreOverrideCursor()
QMessageBox.critical(self.dock, self.dock.windowTitle(), '%s' % e)
except SystemError as e:
QApplication.restoreOverrideCursor()
QMessageBox.critical(self.dock, self.dock.windowTitle(), '%s' % e)
finally:
QApplication.restoreOverrideCursor()
if db and db.con:
try:
db.con.close()
except Exception:
QMessageBox.critical(self.dock, self.dock.windowTitle(),
'server closed the connection unexpectedly')
def getLayerName(self, args, con, letter=''):
''' returns the layer Name '''
function = self.functions[str(self.dock.comboBoxFunction.currentText())]
layerName = "(" + letter
if 'directed' in args and args['directed'] == 'true':
layerName += "D) "
else:
layerName += "U) "
layerName += function.getName() + ": "
if 'source_id' in args:
layerName += args['source_id'].as_string(con)
elif 'ids' in args:
layerName += "{" + args['ids'] + "}"
else:
layerName += "[" + args['source_ids'].as_string(con) + "]"
if 'ids' in args:
layerName += " "
elif 'distance' in args:
layerName += " dd = " + args['distance']
else:
layerName += " to "
if 'target_id' in args:
layerName += args['target_id'].as_string(con)
else:
layerName += "[" + args['target_ids'].as_string(con) + "]"
if 'paths' in args:
layerName += " - K = " + args['paths']
if 'heap_paths' in args and args['heap_paths'] == 'true':
layerName += '+'
layerName += " " + args['printBBOX']
return layerName
def clear(self):
''' Clears the selected ids '''
# self.dock.lineEditIds.setText("")
for marker in self.idsVertexMarkers:
marker.setVisible(False)
self.idsVertexMarkers = []
# self.dock.lineEditSourceIds.setText("")
for marker in self.sourceIdsVertexMarkers:
marker.setVisible(False)
self.sourceIdsVertexMarkers = []
# self.dock.lineEditTargetIds.setText("")
for marker in self.targetIdsVertexMarkers:
marker.setVisible(False)
self.targetIdsVertexMarkers = []
# self.dock.lineEditPcts.setText("")
# self.dock.lineEditSourceId.setText("")
self.sourceIdVertexMarker.setVisible(False)
# self.dock.lineEditSourcePos.setText("0.5")
# self.dock.lineEditTargetId.setText("")
self.targetIdVertexMarker.setVisible(False)
# self.dock.lineEditTargetPos.setText("0.5")
for rubberBand in self.idsRubberBands:
rubberBand.reset(Utils.getRubberBandType(False))
self.idsRubberBands = []
self.sourceIdRubberBand.reset(Utils.getRubberBandType(False))
self.targetIdRubberBand.reset(Utils.getRubberBandType(False))
for marker in self.canvasItemList['markers']:
marker.setVisible(False)
self.canvasItemList['markers'] = []
for anno in self.canvasItemList['annotations']:
try:
anno.setVisible(False)
except RuntimeError as e:
QApplication.restoreOverrideCursor()
QMessageBox.critical(self.dock, self.dock.windowTitle(), '%s' % e)
self.canvasItemList['annotations'] = []
for path in self.canvasItemList['paths']:
path.reset(Utils.getRubberBandType(False))
self.canvasItemList['paths'] = []
self.canvasItemList['path'].reset(Utils.getRubberBandType(False))
self.canvasItemList['area'].reset(Utils.getRubberBandType(True))
def toggleSelectButton(self, button):
selectButtons = [
self.dock.buttonSelectIds,
self.dock.buttonSelectSourceId,
self.dock.buttonSelectTargetId
]
for selectButton in selectButtons:
if selectButton != button:
if selectButton.isChecked():
selectButton.click()
def get_innerQueryArguments(self, controls):
args = {}
args['edge_schema'] = sql.Identifier(str(self.dock.lineEditSchema.text()))
args['edge_table'] = sql.Identifier(str(self.dock.lineEditTable.text()))
args['geometry'] = sql.Identifier(str(self.dock.lineEditGeometry.text()))
args['id'] = sql.Identifier(str(self.dock.lineEditId.text()))
args['source'] = sql.Identifier(str(self.dock.lineEditSource.text()))
args['target'] = sql.Identifier(str(self.dock.lineEditTarget.text()))
args['cost'] = sql.Identifier(str(self.dock.lineEditCost.text()))
if not self.dock.checkBoxHasReverseCost.isChecked():
args['reverse_cost'] = sql.SQL(" -1 ")
else:
args['reverse_cost'] = sql.SQL("{}").format(sql.Identifier(
str(self.dock.lineEditReverseCost.text())))
if 'lineEditX1' in controls:
args['x1'] = sql.Identifier(self.dock.lineEditX1.text())
args['y1'] = sql.Identifier(self.dock.lineEditY1.text())
args['x2'] = sql.Identifier(self.dock.lineEditX2.text())
args['y2'] = sql.Identifier(self.dock.lineEditY2.text())
return args
def get_whereClause(self, edge_schema, edge_table, geometry, conn):
args = {}
args['srid'], args['geomType'] = Utils.getSridAndGeomType(conn, edge_schema, edge_table, geometry)
args['dbsrid'] = sql.Literal(args['srid'])
if self.dock.checkBoxUseBBOX.isChecked():
args['BBOX'], args['printBBOX'] = self.getBBOX(args['srid'])
args['where_clause'] = sql.SQL(' WHERE {0}.{1} && {2}').format(edge_table, geometry,
args['BBOX'])
else:
args['BBOX'] = sql.SQL("")
args['printBBOX'] = ' '
args['where_clause'] = sql.SQL(' WHERE true ')
return args
def get_innerQuery(self, controls, conn):
args = {}
args = self.get_innerQueryArguments(controls)
args.update(self.get_whereClause(args['edge_schema'], args['edge_table'], args['geometry'], conn))
if 'lineEditX1' not in controls:
args['innerQuery'] = PgrQ.getEdgesQuery(args)
else:
args['innerQuery'] = PgrQ.getEdgesQueryXY(args)
return args
def getArguments(self):
''' updates the GUI field text to args '''
db = None
try:
dbname = str(self.dock.comboConnections.currentText())
db = self.actionsDb[dbname].connect()