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QGIS/python/plugins/fTools/tools/doValidate.py
Juergen E. Fischer b39055b39c indentation update (now including autopep8)
2015-08-22 14:29:41 +02:00

348 lines
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Python
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# -*- coding: utf-8 -*-
#-----------------------------------------------------------
#
# fTools
# Copyright (C) 2008-2011 Carson Farmer
# EMAIL: carson.farmer (at) gmail.com
# WEB : http://www.ftools.ca/fTools.html
#
# A collection of data management and analysis tools for vector data
#
#-----------------------------------------------------------
#
# licensed under the terms of GNU GPL 2
#
# 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.
#
#---------------------------------------------------------------------
from PyQt4.QtCore import SIGNAL, Qt, QObject, QSettings, QByteArray, QThread, QVariant
from PyQt4.QtGui import QDialog, QDialogButtonBox, QAbstractItemView, QApplication, QMessageBox, QHeaderView, QTableWidgetItem
from qgis.core import QGis, QgsPoint, QgsFeature, QgsFeatureRequest, QgsGeometry, QgsFields, QgsField, QgsVectorFileWriter
from qgis.gui import QgsVertexMarker
from ui_frmVisual import Ui_Dialog
import ftools_utils
class MarkerErrorGeometry():
def __init__(self, mapCanvas):
self.__canvas = mapCanvas
self.__marker = None
def __del__(self):
self.reset()
def __createMarker(self, point):
self.__marker = QgsVertexMarker(self.__canvas)
self.__marker.setCenter(point)
self.__marker.setIconType(QgsVertexMarker.ICON_X)
self.__marker.setPenWidth(3)
def setGeom(self, p):
if self.__marker is not None:
self.reset()
if self.__marker is None:
self.__createMarker(p)
else:
self.__marker.setCenter(p)
def reset(self):
if self.__marker is not None:
self.__canvas.scene().removeItem(self.__marker)
del self.__marker
self.__marker = None
class ValidateDialog(QDialog, Ui_Dialog):
def __init__(self, iface):
QDialog.__init__(self, iface.mainWindow())
self.iface = iface
self.setupUi(self)
# self.setModal(False) # we want to be able to interact with the featuresmc.extent().width()
# self.setWindowFlags( Qt.SubWindow )
# adjust user interface
self.setWindowTitle(self.tr("Check geometry validity"))
self.cmbField.setVisible(False)
self.label.setVisible(False)
self.useSelected.setVisible(True)
self.label_2.setText(self.tr("Geometry errors"))
self.label_4.setText(self.tr("Total encountered errors"))
self.partProgressBar.setVisible(False)
self.tblUnique.setSelectionMode(QAbstractItemView.SingleSelection)
self.tblUnique.setSelectionBehavior(QAbstractItemView.SelectRows)
# populate list of available layers
myList = ftools_utils.getLayerNames([QGis.Point, QGis.Line, QGis.Polygon])
self.connect(self.tblUnique, SIGNAL("currentItemChanged(QTableWidgetItem*, QTableWidgetItem*)"), self.zoomToError)
self.inShape.addItems(myList)
self.buttonBox_2.setOrientation(Qt.Horizontal)
self.cancel_close = self.buttonBox_2.button(QDialogButtonBox.Close)
self.buttonOk = self.buttonBox_2.button(QDialogButtonBox.Ok)
self.progressBar.setValue(0)
self.storedScale = self.iface.mapCanvas().scale()
# create marker for error
self.marker = MarkerErrorGeometry(self.iface.mapCanvas())
settings = QSettings()
self.restoreGeometry(settings.value("/fTools/ValidateDialog/geometry", QByteArray(), type=QByteArray))
QObject.connect(self.browseShpError, SIGNAL("clicked()"), self.outFile)
QObject.connect(self.ckBoxShpError, SIGNAL("stateChanged( int )"), self.updateGui)
self.updateGui()
def closeEvent(self, e):
settings = QSettings()
settings.setValue("/fTools/ValidateDialog/geometry", self.saveGeometry())
QDialog.closeEvent(self, e)
del self.marker
def keyPressEvent(self, e):
if (e.modifiers() == Qt.ControlModifier or
e.modifiers() == Qt.MetaModifier ) and \
e.key() == Qt.Key_C:
items = ""
for row in range(self.tblUnique.rowCount()):
items += self.tblUnique.item(row, 0).text() + "," + self.tblUnique.item(row, 1).text() + "\n"
if items:
clip_board = QApplication.clipboard()
clip_board.setText(items)
else:
QDialog.keyPressEvent(self, e)
def accept(self):
if self.inShape.currentText() == "":
QMessageBox.information(self, self.tr("Error!"), self.tr("Please specify input vector layer"))
elif self.cmbField.isVisible() and self.cmbField.currentText() == "":
QMessageBox.information(self, self.tr("Error!"), self.tr("Please specify input field"))
elif self.ckBoxShpError.isChecked() and self.lineEditShpError.text() == "":
QMessageBox.information(self, self.tr("Error!"), self.tr("Please specify output shapefile"))
else:
self.vlayer = ftools_utils.getVectorLayerByName(self.inShape.currentText())
self.validate(self.useSelected.checkState())
def updateGui(self):
if self.ckBoxShpError.isChecked():
self.lineEditShpError.setEnabled(True)
self.browseShpError.setEnabled(True)
self.addToCanvasCheck.setEnabled(True)
self.tblUnique.setEnabled(False)
self.lstCount.setEnabled(False)
self.label_2.setEnabled(False)
self.label_4.setEnabled(False)
self.label_5.setEnabled(False)
else:
self.lineEditShpError.setEnabled(False)
self.browseShpError.setEnabled(False)
self.addToCanvasCheck.setEnabled(False)
self.tblUnique.setEnabled(True)
self.lstCount.setEnabled(True)
self.label_2.setEnabled(True)
self.label_4.setEnabled(True)
self.label_5.setEnabled(True)
def outFile(self):
self.lineEditShpError.clear()
(self.shapefileName, self.encoding) = ftools_utils.saveDialog(self)
if self.shapefileName is None or self.encoding is None:
return
self.lineEditShpError.setText(self.shapefileName)
def zoomToError(self, curr, prev):
if curr is None:
return
row = curr.row() # if we clicked in the first column, we want the second
item = self.tblUnique.item(row, 1)
mc = self.iface.mapCanvas()
mc.zoomToPreviousExtent()
e = item.data(Qt.UserRole)
if isinstance(e, QgsPoint):
e = mc.mapRenderer().layerToMapCoordinates(self.vlayer, e)
self.marker.setGeom(e)
rect = mc.extent()
rect.scale(0.5, e)
else:
self.marker.reset()
ft = QgsFeature()
fid = int(self.tblUnique.item(row, 0).text())
if not self.vlayer.getFeatures(QgsFeatureRequest().setFilterFid(fid)).nextFeature(ft):
return
rect = mc.mapRenderer().layerExtentToOutputExtent(self.vlayer, ft.geometry().boundingBox())
rect.scale(1.05)
# Set the extent to our new rectangle
mc.setExtent(rect)
# Refresh the map
mc.refresh()
def validate(self, mySelection):
if not self.ckBoxShpError.isChecked():
self.tblUnique.clearContents()
self.tblUnique.setRowCount(0)
self.lstCount.clear()
self.shapefileName = None
self.encoding = None
self.buttonOk.setEnabled(False)
self.testThread = validateThread(self.iface.mainWindow(), self, self.vlayer, mySelection, self.shapefileName, self.encoding, self.ckBoxShpError.isChecked())
QObject.connect(self.testThread, SIGNAL("runFinished(PyQt_PyObject)"), self.runFinishedFromThread)
QObject.connect(self.testThread, SIGNAL("runStatus(PyQt_PyObject)"), self.runStatusFromThread)
QObject.connect(self.testThread, SIGNAL("runRange(PyQt_PyObject)"), self.runRangeFromThread)
self.cancel_close.setText(self.tr("Cancel"))
QObject.connect(self.cancel_close, SIGNAL("clicked()"), self.cancelThread)
QApplication.setOverrideCursor(Qt.WaitCursor)
self.testThread.start()
return True
def reject(self):
# Remove Marker
self.marker.reset()
QDialog.reject(self)
def cancelThread(self):
self.testThread.stop()
QApplication.restoreOverrideCursor()
self.buttonOk.setEnabled(True)
def runFinishedFromThread(self, success):
self.testThread.stop()
QApplication.restoreOverrideCursor()
self.buttonOk.setEnabled(True)
if success == "writeShape":
extra = ""
if self.addToCanvasCheck.isChecked():
addCanvasCheck = ftools_utils.addShapeToCanvas(unicode(self.shapefileName))
if not addCanvasCheck:
QMessageBox.warning(self, self.tr("Geometry"), self.tr("Error loading output shapefile:\n%s") % (unicode(self.shapefileName)))
else:
QMessageBox.information(self, self.tr("Geometry"), self.tr("Created output shapefile:\n%s\n%s") % (unicode(self.shapefileName), extra))
else:
self.tblUnique.setColumnCount(2)
count = 0
for rec in success:
if len(rec[1]) < 1:
continue
for err in rec[1]: # for each error we find
self.tblUnique.insertRow(count)
fidItem = QTableWidgetItem(unicode(rec[0]))
self.tblUnique.setItem(count, 0, fidItem)
message = err.what()
errItem = QTableWidgetItem(message)
if err.hasWhere(): # if there is a location associated with the error
errItem.setData(Qt.UserRole, err.where())
self.tblUnique.setItem(count, 1, errItem)
count += 1
self.tblUnique.setHorizontalHeaderLabels([self.tr("Feature"), self.tr("Error(s)")])
self.tblUnique.horizontalHeader().setResizeMode(0, QHeaderView.ResizeToContents)
self.tblUnique.horizontalHeader().show()
self.tblUnique.horizontalHeader().setResizeMode(1, QHeaderView.Stretch)
self.tblUnique.resizeRowsToContents()
self.lstCount.insert(unicode(count))
self.cancel_close.setText("Close")
QObject.disconnect(self.cancel_close, SIGNAL("clicked()"), self.cancelThread)
return True
def runStatusFromThread(self, status):
self.progressBar.setValue(status)
def runRangeFromThread(self, range_vals):
self.progressBar.setRange(range_vals[0], range_vals[1])
class validateThread(QThread):
def __init__(self, parentThread, parentObject, vlayer, mySelection, myName, myEncoding, myNewShape):
QThread.__init__(self, parentThread)
self.parent = parentObject
self.running = False
self.vlayer = vlayer
self.mySelection = mySelection
self.myName = myName
self.myEncoding = myEncoding
self.writeShape = myNewShape
def run(self):
self.running = True
success = self.check_geometry(self.vlayer)
self.emit(SIGNAL("runFinished(PyQt_PyObject)"), success)
def stop(self):
self.running = False
def check_geometry(self, vlayer):
lstErrors = []
if self.mySelection:
layer = vlayer.selectedFeatures()
nFeat = len(layer)
else:
layer = []
ft = QgsFeature()
fit = vlayer.getFeatures(QgsFeatureRequest().setSubsetOfAttributes([]))
while fit.nextFeature(ft):
layer.append(QgsFeature(ft))
nFeat = len(layer)
nElement = 0
if nFeat > 0:
self.emit(SIGNAL("runStatus(PyQt_PyObject)"), 0)
self.emit(SIGNAL("runRange(PyQt_PyObject)"), (0, nFeat))
for feat in layer:
if not self.running:
return list()
geom = QgsGeometry(feat.geometry()) # ger reference to geometry
self.emit(SIGNAL("runStatus(PyQt_PyObject)"), nElement)
nElement += 1
# Check Add error
if not geom.isGeosEmpty():
lstErrors.append((feat.id(), list(geom.validateGeometry())))
self.emit(SIGNAL("runStatus(PyQt_PyObject)"), nFeat)
if self.writeShape:
fields = QgsFields()
fields.append(QgsField("FEAT_ID", QVariant.Int))
fields.append(QgsField("ERROR", QVariant.String))
writer = QgsVectorFileWriter(self.myName, self.myEncoding, fields,
QGis.WKBPoint, vlayer.crs())
for rec in lstErrors:
if len(rec[1]) < 1:
continue
for err in rec[1]:
fidItem = unicode(rec[0])
message = err.what()
if err.hasWhere():
locErr = err.where()
xP = locErr.x()
yP = locErr.y()
myPoint = QgsPoint(xP, yP)
geometry = QgsGeometry().fromPoint(myPoint)
ft = QgsFeature()
ft.setGeometry(geometry)
ft.setAttributes([fidItem, message])
writer.addFeature(ft)
del writer
return "writeShape"
else:
return lstErrors
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