forked from anitagraser/pgRoutingLayer
/
pgRoutingLayer.py
945 lines (809 loc) · 42.1 KB
/
pgRoutingLayer.py
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"""
/***************************************************************************
pgRouting Layer
a QGIS plugin
based on "Fast SQL Layer" plugin. Copyright 2011 Pablo Torres Carreira
-------------------
begin : 2011-11-25
copyright : (c) 2011 by Anita Graser
email : anita.graser.at@gmail.com
***************************************************************************/
/***************************************************************************
* *
* 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 the PyQt and QGIS libraries
from PyQt4 import uic
from PyQt4.QtCore import *
from PyQt4.QtGui import *
from qgis.core import *
from qgis.gui import *
import dbConnection
import pgRoutingLayer_utils as Utils
#import highlighter as hl
import os
import psycopg2
import re
conn = dbConnection.ConnectionManager()
class PgRoutingLayer:
SUPPORTED_FUNCTIONS = [
'dijkstra',
'astar',
#'shootingStar',
'drivingDistance',
'alphashape',
'tsp_euclid',
'trsp_vertex',
'trsp_edge',
'kdijkstra_cost',
'kdijkstra_path',
'bdDijkstra',
'bdAstar',
'ksp'
]
TOGGLE_CONTROL_NAMES = [
'labelId', 'lineEditId',
'labelSource', 'lineEditSource',
'labelTarget', 'lineEditTarget',
'labelCost', 'lineEditCost',
'labelReverseCost', 'lineEditReverseCost',
'labelX1', 'lineEditX1',
'labelY1', 'lineEditY1',
'labelX2', 'lineEditX2',
'labelY2', 'lineEditY2',
'labelRule', 'lineEditRule',
'labelToCost', 'lineEditToCost',
'labelIds', 'lineEditIds', 'buttonSelectIds',
'labelSourceId', 'lineEditSourceId', 'buttonSelectSourceId',
'labelSourcePos', 'lineEditSourcePos',
'labelTargetId', 'lineEditTargetId', 'buttonSelectTargetId',
'labelTargetIds', 'lineEditTargetIds', 'buttonSelectTargetIds',
'labelTargetPos', 'lineEditTargetPos',
'labelDistance', 'lineEditDistance',
'labelPaths', 'lineEditPaths',
'checkBoxDirected', 'checkBoxHasReverseCost',
'labelTurnRestrictSql', 'plainTextEditTurnRestrictSql',
]
FIND_RADIUS = 10
def __init__(self, iface):
# Save reference to the QGIS interface
self.iface = iface
self.idsVertexMarkers = []
self.targetIdsVertexMarkers = []
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.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)
if not Utils.isQGISv1():
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)
#self.iface.addToolBarIcon(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.LeftDockWidgetArea, self.dock)
self.idsEmitPoint = QgsMapToolEmitPoint(self.iface.mapCanvas())
#self.idsEmitPoint.setButton(buttonSelectIds)
self.sourceIdEmitPoint = QgsMapToolEmitPoint(self.iface.mapCanvas())
#self.sourceIdEmitPoint.setButton(buttonSelectSourceId)
self.targetIdEmitPoint = QgsMapToolEmitPoint(self.iface.mapCanvas())
#self.targetIdEmitPoint.setButton(buttonSelectTargetId)
self.targetIdsEmitPoint = QgsMapToolEmitPoint(self.iface.mapCanvas())
#self.targetIdsEmitPoint.setButton(buttonSelectTargetId)
#connect the action to each method
QObject.connect(self.action, SIGNAL("triggered()"), self.show)
QObject.connect(self.dock.comboBoxFunction, SIGNAL("currentIndexChanged(const QString&)"), self.updateFunctionEnabled)
QObject.connect(self.dock.buttonSelectIds, SIGNAL("clicked(bool)"), self.selectIds)
QObject.connect(self.idsEmitPoint, SIGNAL("canvasClicked(const QgsPoint&, Qt::MouseButton)"), self.setIds)
QObject.connect(self.dock.buttonSelectSourceId, SIGNAL("clicked(bool)"), self.selectSourceId)
QObject.connect(self.sourceIdEmitPoint, SIGNAL("canvasClicked(const QgsPoint&, Qt::MouseButton)"), self.setSourceId)
QObject.connect(self.dock.buttonSelectTargetId, SIGNAL("clicked(bool)"), self.selectTargetId)
QObject.connect(self.targetIdEmitPoint, SIGNAL("canvasClicked(const QgsPoint&, Qt::MouseButton)"), self.setTargetId)
QObject.connect(self.dock.buttonSelectTargetIds, SIGNAL("clicked(bool)"), self.selectTargetIds)
QObject.connect(self.targetIdsEmitPoint, SIGNAL("canvasClicked(const QgsPoint&, Qt::MouseButton)"), self.setTargetIds)
QObject.connect(self.dock.checkBoxHasReverseCost, SIGNAL("stateChanged(int)"), self.updateReverseCostEnabled)
QObject.connect(self.dock.buttonRun, SIGNAL("clicked()"), self.run)
QObject.connect(self.dock.buttonExport, SIGNAL("clicked()"), self.export)
QObject.connect(self.dock.buttonExportMerged, SIGNAL("clicked()"), self.exportMerged)
QObject.connect(self.dock.buttonClear, SIGNAL("clicked()"), self.clear)
#populate the combo with connections
actions = conn.getAvailableConnections()
self.actionsDb = {}
for a in actions:
self.actionsDb[ unicode(a.text()) ] = a
for i in self.actionsDb:
self.dock.comboConnections.addItem(i)
self.prevType = None
self.functions = {}
for funcfname in self.SUPPORTED_FUNCTIONS:
# import the function
exec("from functions import %s as function" % funcfname)
funcname = function.Function.getName()
self.functions[funcname] = function.Function(self.dock)
self.dock.comboBoxFunction.addItem(funcname)
self.dock.lineEditIds.setValidator(QRegExpValidator(QRegExp("[0-9,]+"), self.dock))
self.dock.lineEditSourceId.setValidator(QIntValidator())
self.dock.lineEditSourcePos.setValidator(QDoubleValidator(0.0, 1.0, 10, self.dock))
self.dock.lineEditTargetId.setValidator(QIntValidator())
self.dock.lineEditTargetPos.setValidator(QDoubleValidator(0.0, 1.0, 10, self.dock))
self.dock.lineEditTargetIds.setValidator(QRegExpValidator(QRegExp("[0-9,]+"), self.dock))
self.dock.lineEditDistance.setValidator(QDoubleValidator())
self.dock.lineEditPaths.setValidator(QIntValidator())
self.loadSettings()
def show(self):
self.iface.addDockWidget(Qt.LeftDockWidgetArea, self.dock)
def unload(self):
self.saveSettings()
# Remove the plugin menu item and icon
self.iface.removePluginDatabaseMenu("&pgRouting Layer", self.action)
self.iface.removeDockWidget(self.dock)
def updateFunctionEnabled(self, text):
function = self.functions[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():
control = getattr(self.dock, controlName)
control.setVisible(True)
# adjust sql scroll area max height (TODO:initial display)
contents = self.dock.scrollAreaWidgetContents
margins = contents.layout().contentsMargins()
##QMessageBox.information(self.dock, self.dock.windowTitle(), '%s - height:%d' % (text, contents.sizeHint().height()))
self.dock.scrollAreaColumns.setMaximumHeight(contents.sizeHint().height() + margins.top() + margins.bottom())
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 != None) and (self.prevType != function.isEdgeBase()):
self.clear()
self.prevType = function.isEdgeBase()
self.dock.buttonExport.setEnabled(function.canExport())
def selectIds(self, checked):
if checked:
self.toggleSelectButton(self.dock.buttonSelectIds)
self.dock.lineEditIds.setText("")
if len(self.idsVertexMarkers) > 0:
for marker in self.idsVertexMarkers:
marker.setVisible(False)
self.idsVertexMarkers = []
self.iface.mapCanvas().setMapTool(self.idsEmitPoint)
else:
self.iface.mapCanvas().unsetMapTool(self.idsEmitPoint)
def setIds(self, pt):
args = self.getBaseArguments()
result, id, wkt = self.findNearestNode(args, pt)
if result:
ids = self.dock.lineEditIds.text()
if not ids:
self.dock.lineEditIds.setText(str(id))
else:
self.dock.lineEditIds.setText(ids + "," + str(id))
geom = QgsGeometry().fromWkt(wkt)
vertexMarker = QgsVertexMarker(self.iface.mapCanvas())
vertexMarker.setColor(Qt.green)
vertexMarker.setPenWidth(2)
vertexMarker.setCenter(geom.asPoint())
self.idsVertexMarkers.append(vertexMarker)
self.iface.mapCanvas().clear() # TODO:
def selectSourceId(self, checked):
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):
function = self.functions[str(self.dock.comboBoxFunction.currentText())]
args = self.getBaseArguments()
if not function.isEdgeBase():
result, id, wkt = self.findNearestNode(args, pt)
if result:
self.dock.lineEditSourceId.setText(str(id))
geom = QgsGeometry().fromWkt(wkt)
self.sourceIdVertexMarker.setCenter(geom.asPoint())
self.sourceIdVertexMarker.setVisible(True)
self.dock.buttonSelectSourceId.click()
else:
result, id, wkt = self.findNearestLink(args, pt)
if result:
self.dock.lineEditSourceId.setText(str(id))
geom = QgsGeometry().fromWkt(wkt)
if geom.wkbType() == QGis.WKBMultiLineString:
for line in geom.asMultiPolyline():
for pt in line:
self.sourceIdRubberBand.addPoint(pt)
elif geom.wkbType() == QGis.WKBLineString:
for pt in geom.asPolyline():
self.sourceIdRubberBand.addPoint(pt)
self.dock.buttonSelectSourceId.click()
self.iface.mapCanvas().clear() # TODO:
def selectTargetId(self, checked):
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):
function = self.functions[str(self.dock.comboBoxFunction.currentText())]
args = self.getBaseArguments()
if not function.isEdgeBase():
result, id, wkt = self.findNearestNode(args, pt)
if result:
self.dock.lineEditTargetId.setText(str(id))
geom = QgsGeometry().fromWkt(wkt)
self.targetIdVertexMarker.setCenter(geom.asPoint())
self.targetIdVertexMarker.setVisible(True)
self.dock.buttonSelectTargetId.click()
else:
result, id, wkt = self.findNearestLink(args, pt)
if result:
self.dock.lineEditTargetId.setText(str(id))
geom = QgsGeometry().fromWkt(wkt)
if geom.wkbType() == QGis.WKBMultiLineString:
for line in geom.asMultiPolyline():
for pt in line:
self.targetIdRubberBand.addPoint(pt)
elif geom.wkbType() == QGis.WKBLineString:
for pt in geom.asPolyline():
self.targetIdRubberBand.addPoint(pt)
self.dock.buttonSelectTargetId.click()
self.iface.mapCanvas().clear() # TODO:
def selectTargetIds(self, checked):
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):
args = self.getBaseArguments()
result, id, wkt = self.findNearestNode(args, pt)
if result:
ids = self.dock.lineEditTargetIds.text()
if not ids:
self.dock.lineEditTargetIds.setText(str(id))
else:
self.dock.lineEditTargetIds.setText(ids + "," + str(id))
geom = QgsGeometry().fromWkt(wkt)
vertexMarker = QgsVertexMarker(self.iface.mapCanvas())
vertexMarker.setColor(Qt.green)
vertexMarker.setPenWidth(2)
vertexMarker.setCenter(geom.asPoint())
self.targetIdsVertexMarkers.append(vertexMarker)
self.iface.mapCanvas().clear() # TODO:
def updateReverseCostEnabled(self, state):
if state == Qt.Checked:
self.dock.lineEditReverseCost.setEnabled(True)
else:
self.dock.lineEditReverseCost.setEnabled(False)
def run(self):
QApplication.setOverrideCursor(QCursor(Qt.WaitCursor))
function = self.functions[str(self.dock.comboBoxFunction.currentText())]
args = self.getArguments(function.getControlNames())
empties = []
for key in args.keys():
if 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
try:
dados = str(self.dock.comboConnections.currentText())
db = self.actionsDb[dados].connect()
con = db.con
srid, geomType = self.getSridAndGeomType(con, args)
function.prepare(con, args, geomType, self.canvasItemList)
query = function.getQuery(args)
##QMessageBox.information(self.dock, self.dock.windowTitle(), query)
cur = con.cursor()
cur.execute(query)
rows = cur.fetchall()
args['srid'] = srid
args['canvas_srid'] = Utils.getCanvasSrid(Utils.getDestinationCrs(self.iface.mapCanvas().mapRenderer()))
Utils.setTransformQuotes(args)
function.draw(rows, con, args, geomType, self.canvasItemList, self.iface.mapCanvas())
except psycopg2.DatabaseError, e:
QApplication.restoreOverrideCursor()
QMessageBox.critical(self.dock, self.dock.windowTitle(), '%s' % e)
except SystemError, e:
QApplication.restoreOverrideCursor()
QMessageBox.critical(self.dock, self.dock.windowTitle(), '%s' % e)
except AssertionError, 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:
QMessageBox.critical(self.dock, self.dock.windowTitle(),
'server closed the connection unexpectedly')
def export(self):
QApplication.setOverrideCursor(QCursor(Qt.WaitCursor))
function = self.functions[str(self.dock.comboBoxFunction.currentText())]
args = self.getArguments(function.getControlNames())
empties = []
for key in args.keys():
if 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
args['path_query'] = function.getQuery(args)
query = """
SELECT %(edge_table)s.*,
result.seq AS result_seq,
result.node AS result_node,
result.cost AS result_cost
FROM %(edge_table)s
JOIN
(%(path_query)s) AS result
ON %(edge_table)s.%(id)s = result.edge ORDER BY result.seq """ % args
query = query.replace('\n', ' ')
query = re.sub(r'\s+', ' ', query)
query = query.replace('( ', '(')
query = query.replace(' )', ')')
query = query.strip()
##QMessageBox.information(self.dock, self.dock.windowTitle(), query)
try:
dados = str(self.dock.comboConnections.currentText())
db = self.actionsDb[dados].connect()
uri = db.getURI()
uri.setDataSource("", "(" + query + ")", args['geometry'], "", "result_seq")
# add vector layer to map
layerName = function.getName() + " - from " + args['source_id'] + " to "
if 'target_id' in args:
layerName += args['target_id']
else:
layerName += "many"
vl = self.iface.addVectorLayer(uri.uri(), layerName, db.getProviderName())
except psycopg2.DatabaseError, e:
QApplication.restoreOverrideCursor()
QMessageBox.critical(self.dock, self.dock.windowTitle(), '%s' % e)
except SystemError, 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:
QMessageBox.critical(self.dock, self.dock.windowTitle(),
'server closed the connection unexpectedly')
def exportMerged(self):
QApplication.setOverrideCursor(QCursor(Qt.WaitCursor))
function = self.functions[str(self.dock.comboBoxFunction.currentText())]
args = self.getArguments(function.getControlNames())
empties = []
for key in args.keys():
if 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
args['path_query'] = function.getQuery(args)
query = """SELECT 1 AS id, ST_LINEMERGE(geom) as geom, ST_LENGTH(ST_LINEMERGE(geom)) as route_length FROM (
SELECT ST_UNION(geom) AS geom FROM (
SELECT %(edge_table)s.*,
result.seq AS result_seq,
result.node AS result_node,
result.cost AS result_cost
FROM %(edge_table)s
JOIN
(%(path_query)s) AS result
ON %(edge_table)s.%(id)s = result.edge ORDER BY result.seq ) as foo ) as bar""" % args
query = query.replace('\n', ' ')
query = re.sub(r'\s+', ' ', query)
query = query.replace('( ', '(')
query = query.replace(' )', ')')
query = query.strip()
##QMessageBox.information(self.dock, self.dock.windowTitle(), query)
try:
dados = str(self.dock.comboConnections.currentText())
db = self.actionsDb[dados].connect()
uri = db.getURI()
uri.setDataSource("", "(" + query + ")", args['geometry'], "", "id")
# add vector layer to map
layerName = function.getName() + " - from " + args['source_id'] + " to "
if 'target_id' in args:
layerName += args['target_id']
else:
layerName += "many"
vl = self.iface.addVectorLayer(uri.uri(), layerName, db.getProviderName())
except psycopg2.DatabaseError, e:
QApplication.restoreOverrideCursor()
QMessageBox.critical(self.dock, self.dock.windowTitle(), '%s' % e)
except SystemError, 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:
QMessageBox.critical(self.dock, self.dock.windowTitle(),
'server closed the connection unexpectedly')
def clear(self):
self.dock.lineEditIds.setText("")
for marker in self.idsVertexMarkers:
marker.setVisible(False)
self.idsVertexMarkers = []
self.dock.lineEditTargetIds.setText("")
for marker in self.targetIdsVertexMarkers:
marker.setVisible(False)
self.targetIdsVertexMarkers = []
self.dock.lineEditSourceId.setText("")
self.sourceIdVertexMarker.setVisible(False)
self.dock.lineEditTargetId.setText("")
self.targetIdVertexMarker.setVisible(False)
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']:
anno.setVisible(False)
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 getArguments(self, controls):
args = {}
args['edge_table'] = self.dock.lineEditTable.text()
args['geometry'] = self.dock.lineEditGeometry.text()
if 'lineEditId' in controls:
args['id'] = self.dock.lineEditId.text()
if 'lineEditSource' in controls:
args['source'] = self.dock.lineEditSource.text()
if 'lineEditTarget' in controls:
args['target'] = self.dock.lineEditTarget.text()
if 'lineEditCost' in controls:
args['cost'] = self.dock.lineEditCost.text()
if 'lineEditReverseCost' in controls:
args['reverse_cost'] = self.dock.lineEditReverseCost.text()
if 'lineEditX1' in controls:
args['x1'] = self.dock.lineEditX1.text()
if 'lineEditY1' in controls:
args['y1'] = self.dock.lineEditY1.text()
if 'lineEditX2' in controls:
args['x2'] = self.dock.lineEditX2.text()
if 'lineEditY2' in controls:
args['y2'] = self.dock.lineEditY2.text()
if 'lineEditRule' in controls:
args['rule'] = self.dock.lineEditRule.text()
if 'lineEditToCost' in controls:
args['to_cost'] = self.dock.lineEditToCost.text()
if 'lineEditIds' in controls:
args['ids'] = self.dock.lineEditIds.text()
if 'lineEditSourceId' in controls:
args['source_id'] = self.dock.lineEditSourceId.text()
if 'lineEditSourcePos' in controls:
args['source_pos'] = self.dock.lineEditSourcePos.text()
if 'lineEditTargetId' in controls:
args['target_id'] = self.dock.lineEditTargetId.text()
if 'lineEditTargetPos' in controls:
args['target_pos'] = self.dock.lineEditTargetPos.text()
if 'lineEditTargetIds' in controls:
args['target_ids'] = self.dock.lineEditTargetIds.text()
if 'lineEditDistance' in controls:
args['distance'] = self.dock.lineEditDistance.text()
if 'lineEditPaths' in controls:
args['paths'] = self.dock.lineEditPaths.text()
if 'checkBoxDirected' in controls:
args['directed'] = str(self.dock.checkBoxDirected.isChecked()).lower()
if 'checkBoxHasReverseCost' in controls:
args['has_reverse_cost'] = str(self.dock.checkBoxHasReverseCost.isChecked()).lower()
if args['has_reverse_cost'] == 'false':
args['reverse_cost'] = ' '
else:
args['reverse_cost'] = ', ' + args['reverse_cost'] + '::float8 AS reverse_cost'
if 'plainTextEditTurnRestrictSql' in controls:
args['turn_restrict_sql'] = self.dock.plainTextEditTurnRestrictSql.toPlainText();
return args
def getBaseArguments(self):
args = {}
args['edge_table'] = self.dock.lineEditTable.text()
args['geometry'] = self.dock.lineEditGeometry.text()
args['id'] = self.dock.lineEditId.text()
args['source'] = self.dock.lineEditSource.text()
args['target'] = self.dock.lineEditTarget.text()
empties = []
for key in args.keys():
if 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 None
return args
def getSridAndGeomType(self, con, args):
cur = con.cursor()
cur.execute("""
SELECT ST_SRID(%(geometry)s), ST_GeometryType(%(geometry)s)
FROM %(edge_table)s
WHERE %(id)s = (SELECT MIN(%(id)s) FROM %(edge_table)s)""" % args)
row = cur.fetchone()
srid = row[0]
geomType = row[1]
return srid, geomType
# emulate "matching.sql" - "find_nearest_node_within_distance"
def findNearestNode(self, args, pt):
distance = self.iface.mapCanvas().getCoordinateTransform().mapUnitsPerPixel() * self.FIND_RADIUS
rect = QgsRectangle(pt.x() - distance, pt.y() - distance, pt.x() + distance, pt.y() + distance)
canvasCrs = Utils.getDestinationCrs(self.iface.mapCanvas().mapRenderer())
db = None
try:
dados = str(self.dock.comboConnections.currentText())
db = self.actionsDb[dados].connect()
con = db.con
srid, geomType = self.getSridAndGeomType(con, args)
if self.iface.mapCanvas().hasCrsTransformEnabled():
layerCrs = QgsCoordinateReferenceSystem()
Utils.createFromSrid(layerCrs, srid)
trans = QgsCoordinateTransform(canvasCrs, layerCrs)
pt = trans.transform(pt)
rect = trans.transform(rect)
args['canvas_srid'] = Utils.getCanvasSrid(canvasCrs)
args['srid'] = srid
args['x'] = pt.x()
args['y'] = pt.y()
args['minx'] = rect.xMinimum()
args['miny'] = rect.yMinimum()
args['maxx'] = rect.xMaximum()
args['maxy'] = rect.yMaximum()
Utils.setStartPoint(geomType, args)
Utils.setEndPoint(geomType, args)
Utils.setTransformQuotes(args)
# Getting nearest source
query1 = """
SELECT %(source)s,
ST_Distance(
%(startpoint)s,
ST_GeomFromText('POINT(%(x)f %(y)f)', %(srid)d)
) AS dist,
ST_AsText(%(transform_s)s%(startpoint)s%(transform_e)s)
FROM %(edge_table)s
WHERE ST_SetSRID('BOX3D(%(minx)f %(miny)f, %(maxx)f %(maxy)f)'::BOX3D, %(srid)d)
&& %(geometry)s ORDER BY dist ASC LIMIT 1""" % args
##QMessageBox.information(self.dock, self.dock.windowTitle(), query1)
cur1 = con.cursor()
cur1.execute(query1)
row1 = cur1.fetchone()
d1 = None
source = None
wkt1 = None
if row1:
d1 = row1[1]
source = row1[0]
wkt1 = row1[2]
# Getting nearest target
query2 = """
SELECT %(target)s,
ST_Distance(
%(endpoint)s,
ST_GeomFromText('POINT(%(x)f %(y)f)', %(srid)d)
) AS dist,
ST_AsText(%(transform_s)s%(endpoint)s%(transform_e)s)
FROM %(edge_table)s
WHERE ST_SetSRID('BOX3D(%(minx)f %(miny)f, %(maxx)f %(maxy)f)'::BOX3D, %(srid)d)
&& %(geometry)s ORDER BY dist ASC LIMIT 1""" % args
##QMessageBox.information(self.dock, self.dock.windowTitle(), query2)
cur2 = con.cursor()
cur2.execute(query2)
row2 = cur2.fetchone()
d2 = None
target = None
wkt2 = None
if row2:
d2 = row2[1]
target = row2[0]
wkt2 = row2[2]
# Checking what is nearer - source or target
d = None
node = None
wkt = None
if d1 and (not d2):
node = source
d = d1
wkt = wkt1
elif (not d1) and d2:
node = target
d = d2
wkt = wkt2
elif d1 and d2:
if d1 < d2:
node = source
d = d1
wkt = wkt1
else:
node = target
d = d2
wkt = wkt2
##QMessageBox.information(self.dock, self.dock.windowTitle(), str(d))
if (d == None) or (d > distance):
node = None
wkt = None
return False, None, None
return True, node, wkt
except psycopg2.DatabaseError, e:
QApplication.restoreOverrideCursor()
QMessageBox.critical(self.dock, self.dock.windowTitle(), '%s' % e)
return False, None, None
finally:
if db and db.con:
db.con.close()
# emulate "matching.sql" - "find_nearest_link_within_distance"
def findNearestLink(self, args, pt):
distance = self.iface.mapCanvas().getCoordinateTransform().mapUnitsPerPixel() * self.FIND_RADIUS
rect = QgsRectangle(pt.x() - distance, pt.y() - distance, pt.x() + distance, pt.y() + distance)
canvasCrs = Utils.getDestinationCrs(self.iface.mapCanvas().mapRenderer())
try:
dados = str(self.dock.comboConnections.currentText())
db = self.actionsDb[dados].connect()
con = db.con
cur = con.cursor()
srid, geomType = self.getSridAndGeomType(con, args)
if self.iface.mapCanvas().hasCrsTransformEnabled():
layerCrs = QgsCoordinateReferenceSystem()
Utils.createFromSrid(layerCrs, srid)
trans = QgsCoordinateTransform(canvasCrs, layerCrs)
pt = trans.transform(pt)
rect = trans.transform(rect)
args['canvas_srid'] = Utils.getCanvasSrid(canvasCrs)
args['srid'] = srid
args['x'] = pt.x()
args['y'] = pt.y()
args['minx'] = rect.xMinimum()
args['miny'] = rect.yMinimum()
args['maxx'] = rect.xMaximum()
args['maxy'] = rect.yMaximum()
Utils.setTransformQuotes(args)
# Searching for a link within the distance
query = """
SELECT %(id)s,
ST_Distance(
%(geometry)s,
ST_GeomFromText('POINT(%(x)f %(y)f)', %(srid)d)
) AS dist,
ST_AsText(%(transform_s)s%(geometry)s%(transform_e)s)
FROM %(edge_table)s
WHERE ST_SetSRID('BOX3D(%(minx)f %(miny)f, %(maxx)f %(maxy)f)'::BOX3D, %(srid)d)
&& %(geometry)s ORDER BY dist ASC LIMIT 1""" % args
##QMessageBox.information(self.dock, self.dock.windowTitle(), query)
cur = con.cursor()
cur.execute(query)
row = cur.fetchone()
if not row:
return False, None, None
link = row[0]
wkt = row[2]
return True, link, wkt
except psycopg2.DatabaseError, e:
QApplication.restoreOverrideCursor()
QMessageBox.critical(self.dock, self.dock.windowTitle(), '%s' % e)
return False, None, None
finally:
if db and db.con:
db.con.close()
def loadSettings(self):
settings = QSettings()
idx = self.dock.comboConnections.findText(Utils.getStringValue(settings, '/pgRoutingLayer/Database', ''))
if idx >= 0:
self.dock.comboConnections.setCurrentIndex(idx)
idx = self.dock.comboBoxFunction.findText(Utils.getStringValue(settings, '/pgRoutingLayer/Function', 'dijkstra'))
if idx >= 0:
self.dock.comboBoxFunction.setCurrentIndex(idx)
self.dock.lineEditTable.setText(Utils.getStringValue(settings, '/pgRoutingLayer/sql/edge_table', 'roads'))
self.dock.lineEditGeometry.setText(Utils.getStringValue(settings, '/pgRoutingLayer/sql/geometry', 'the_geom'))
self.dock.lineEditId.setText(Utils.getStringValue(settings, '/pgRoutingLayer/sql/id', 'id'))
self.dock.lineEditSource.setText(Utils.getStringValue(settings, '/pgRoutingLayer/sql/source', 'source'))
self.dock.lineEditTarget.setText(Utils.getStringValue(settings, '/pgRoutingLayer/sql/target', 'target'))
self.dock.lineEditCost.setText(Utils.getStringValue(settings, '/pgRoutingLayer/sql/cost', 'cost'))
self.dock.lineEditReverseCost.setText(Utils.getStringValue(settings, '/pgRoutingLayer/sql/reverse_cost', 'reverse_cost'))
self.dock.lineEditX1.setText(Utils.getStringValue(settings, '/pgRoutingLayer/sql/x1', 'x1'))
self.dock.lineEditY1.setText(Utils.getStringValue(settings, '/pgRoutingLayer/sql/y1', 'y1'))
self.dock.lineEditX2.setText(Utils.getStringValue(settings, '/pgRoutingLayer/sql/x2', 'x2'))
self.dock.lineEditY2.setText(Utils.getStringValue(settings, '/pgRoutingLayer/sql/y2', 'y2'))
self.dock.lineEditRule.setText(Utils.getStringValue(settings, '/pgRoutingLayer/sql/rule', 'rule'))
self.dock.lineEditToCost.setText(Utils.getStringValue(settings, '/pgRoutingLayer/sql/to_cost', 'to_cost'))
self.dock.lineEditIds.setText(Utils.getStringValue(settings, '/pgRoutingLayer/ids', ''))
self.dock.lineEditSourceId.setText(Utils.getStringValue(settings, '/pgRoutingLayer/source_id', ''))
self.dock.lineEditSourcePos.setText(Utils.getStringValue(settings, '/pgRoutingLayer/source_pos', '0.5'))
self.dock.lineEditTargetId.setText(Utils.getStringValue(settings, '/pgRoutingLayer/target_id', ''))
self.dock.lineEditTargetPos.setText(Utils.getStringValue(settings, '/pgRoutingLayer/target_pos', '0.5'))
self.dock.lineEditTargetIds.setText(Utils.getStringValue(settings, '/pgRoutingLayer/target_ids', ''))
self.dock.lineEditDistance.setText(Utils.getStringValue(settings, '/pgRoutingLayer/distance', ''))
self.dock.lineEditPaths.setText(Utils.getStringValue(settings, '/pgRoutingLayer/paths', '2'))
self.dock.checkBoxDirected.setChecked(Utils.getBoolValue(settings, '/pgRoutingLayer/directed', False))
self.dock.checkBoxHasReverseCost.setChecked(Utils.getBoolValue(settings, '/pgRoutingLayer/has_reverse_cost', False))
self.dock.plainTextEditTurnRestrictSql.setPlainText(Utils.getStringValue(settings, '/pgRoutingLayer/turn_restrict_sql', 'null'))
def saveSettings(self):
settings = QSettings()
settings.setValue('/pgRoutingLayer/Database', self.dock.comboConnections.currentText())
settings.setValue('/pgRoutingLayer/Function', self.dock.comboBoxFunction.currentText())
settings.setValue('/pgRoutingLayer/sql/edge_table', self.dock.lineEditTable.text())
settings.setValue('/pgRoutingLayer/sql/geometry', self.dock.lineEditGeometry.text())
settings.setValue('/pgRoutingLayer/sql/id', self.dock.lineEditId.text())
settings.setValue('/pgRoutingLayer/sql/source', self.dock.lineEditSource.text())
settings.setValue('/pgRoutingLayer/sql/target', self.dock.lineEditTarget.text())
settings.setValue('/pgRoutingLayer/sql/cost', self.dock.lineEditCost.text())
settings.setValue('/pgRoutingLayer/sql/reverse_cost', self.dock.lineEditReverseCost.text())
settings.setValue('/pgRoutingLayer/sql/x1', self.dock.lineEditX1.text())
settings.setValue('/pgRoutingLayer/sql/y1', self.dock.lineEditY1.text())
settings.setValue('/pgRoutingLayer/sql/x2', self.dock.lineEditX2.text())
settings.setValue('/pgRoutingLayer/sql/y2', self.dock.lineEditY2.text())
settings.setValue('/pgRoutingLayer/sql/rule', self.dock.lineEditRule.text())
settings.setValue('/pgRoutingLayer/sql/to_cost', self.dock.lineEditToCost.text())
settings.setValue('/pgRoutingLayer/ids', self.dock.lineEditIds.text())
settings.setValue('/pgRoutingLayer/source_id', self.dock.lineEditSourceId.text())
settings.setValue('/pgRoutingLayer/source_pos', self.dock.lineEditSourcePos.text())
settings.setValue('/pgRoutingLayer/target_id', self.dock.lineEditTargetId.text())
settings.setValue('/pgRoutingLayer/target_pos', self.dock.lineEditTargetPos.text())
settings.setValue('/pgRoutingLayer/target_ids', self.dock.lineEditTargetIds.text())
settings.setValue('/pgRoutingLayer/distance', self.dock.lineEditDistance.text())
settings.setValue('/pgRoutingLayer/paths', self.dock.lineEditPaths.text())
settings.setValue('/pgRoutingLayer/directed', self.dock.checkBoxDirected.isChecked())
settings.setValue('/pgRoutingLayer/has_reverse_cost', self.dock.checkBoxHasReverseCost.isChecked())
settings.setValue('/pgRoutingLayer/turn_restrict_sql', self.dock.plainTextEditTurnRestrictSql.toPlainText())