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https://github.com/qgis/QGIS.git
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224 lines
8.5 KiB
Python
224 lines
8.5 KiB
Python
# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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FieldsCalculatorDialog.py
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---------------------
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Date : October 2013
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Copyright : (C) 2013 by Alexander Bruy
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Email : alexander dot bruy at gmail dot com
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***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************
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"""
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__author__ = 'Alexander Bruy'
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__date__ = 'October 2013'
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__copyright__ = '(C) 2013, Alexander Bruy'
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# This will get replaced with a git SHA1 when you do a git archive
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__revision__ = '$Format:%H$'
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import os
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import re
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from PyQt4.QtCore import Qt, QSettings
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from PyQt4.QtGui import QDialog, QFileDialog, QApplication, QCursor, QMessageBox
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from qgis.gui import QgsEncodingFileDialog
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from processing.core.ProcessingConfig import ProcessingConfig
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from processing.core.ProcessingLog import ProcessingLog
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from processing.gui.AlgorithmExecutor import runalg
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from processing.tools import dataobjects
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from processing.gui.Postprocessing import handleAlgorithmResults
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from ui_DlgFieldsCalculator import Ui_FieldsCalculator
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class FieldsCalculatorDialog(QDialog, Ui_FieldsCalculator):
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def __init__(self, alg):
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QDialog.__init__(self)
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self.setupUi(self)
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self.executed = False
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self.alg = alg
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self.layer = None
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self.cmbInputLayer.currentIndexChanged.connect(self.updateLayer)
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self.btnBrowse.clicked.connect(self.selectFile)
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self.mNewFieldGroupBox.toggled.connect(self.toggleExistingGroup)
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self.mUpdateExistingGroupBox.toggled.connect(self.toggleNewGroup)
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self.mOutputFieldTypeComboBox.currentIndexChanged.connect(self.setupSpinboxes)
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# Default values for field width and precision
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self.mOutputFieldWidthSpinBox.setValue(10)
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self.mOutputFieldPrecisionSpinBox.setValue(3)
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# Output is a shapefile, so limit maximum field name length
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self.mOutputFieldNameLineEdit.setMaxLength(10)
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self.manageGui()
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def manageGui(self):
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if hasattr(self.leOutputFile, 'setPlaceholderText'):
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self.leOutputFile.setPlaceholderText(
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self.tr('[Save to temporary file]'))
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self.mOutputFieldTypeComboBox.blockSignals(True)
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for t in self.alg.TYPE_NAMES:
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self.mOutputFieldTypeComboBox.addItem(t)
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self.mOutputFieldTypeComboBox.blockSignals(False)
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self.cmbInputLayer.blockSignals(True)
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layers = dataobjects.getVectorLayers()
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for layer in layers:
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self.cmbInputLayer.addItem(layer.name())
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self.cmbInputLayer.blockSignals(False)
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self.updateLayer()
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def updateLayer(self):
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self.layer = dataobjects.getObject(self.cmbInputLayer.currentText())
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self.builder.setLayer(self.layer)
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self.builder.loadFieldNames()
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self.populateFields()
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#populateOutputFieldTypes()
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def setupSpinboxes(self, index):
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if index != 0:
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self.mOutputFieldPrecisionSpinBox.setEnabled(False)
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else:
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self.mOutputFieldPrecisionSpinBox.setEnabled(True)
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if index == 0:
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self.mOutputFieldWidthSpinBox.setRange(1, 20)
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self.mOutputFieldWidthSpinBox.setValue(10)
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self.mOutputFieldPrecisionSpinBox.setRange(0, 15)
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self.mOutputFieldPrecisionSpinBox.setValue(3)
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elif index == 1:
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self.mOutputFieldWidthSpinBox.setRange(1, 10)
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self.mOutputFieldWidthSpinBox.setValue(10)
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elif index == 2:
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self.mOutputFieldWidthSpinBox.setRange(1, 255)
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self.mOutputFieldWidthSpinBox.setValue(80)
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else:
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self.mOutputFieldWidthSpinBox.setEnabled(False)
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self.mOutputFieldPrecisionSpinBox.setEnabled(False)
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def selectFile(self):
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output = self.alg.getOutputFromName('OUTPUT_LAYER')
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fileFilter = output.getFileFilter(self.alg)
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settings = QSettings()
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if settings.contains('/Processing/LastOutputPath'):
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path = settings.value('/Processing/LastOutputPath')
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else:
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path = ProcessingConfig.getSetting(ProcessingConfig.OUTPUT_FOLDER)
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lastEncoding = settings.value('/Processing/encoding', 'System')
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fileDialog = QgsEncodingFileDialog(self,
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self.tr('Save file'),
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path,
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fileFilter,
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lastEncoding)
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fileDialog.setFileMode(QFileDialog.AnyFile)
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fileDialog.setAcceptMode(QFileDialog.AcceptSave)
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fileDialog.setConfirmOverwrite(True)
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if fileDialog.exec_() == QDialog.Accepted:
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files = fileDialog.selectedFiles()
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encoding = unicode(fileDialog.encoding())
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output.encoding = encoding
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filename = unicode(files[0])
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selectedFileFilter = unicode(fileDialog.selectedNameFilter())
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if not filename.lower().endswith(
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tuple(re.findall("\*(\.[a-z]{1,5})", fileFilter))):
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ext = re.search("\*(\.[a-z]{1,5})", selectedFileFilter)
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if ext:
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filename = filename + ext.group(1)
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self.leOutputFile.setText(filename)
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settings.setValue('/Processing/LastOutputPath',
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os.path.dirname(filename))
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settings.setValue('/Processing/encoding', encoding)
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def toggleExistingGroup(self, toggled):
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self.mUpdateExistingGroupBox.setChecked(not toggled)
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def toggleNewGroup(self, toggled):
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self.mNewFieldGroupBox.setChecked(not toggled)
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def populateFields(self):
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if self.layer is None:
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return
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fields = self.layer.pendingFields()
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for f in fields:
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self.mExistingFieldComboBox.addItem(f.name())
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def setParamValues(self):
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if self.mUpdateExistingGroupBox.isChecked():
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fieldName = self.mExistingFieldComboBox.currentText()
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else:
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fieldName = self.mOutputFieldNameLineEdit.text()
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layer = dataobjects.getObjectFromName(self.cmbInputLayer.currentText())
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self.alg.setParameterValue('INPUT_LAYER', layer)
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self.alg.setParameterValue('FIELD_NAME', fieldName)
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self.alg.setParameterValue('FIELD_TYPE',
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self.mOutputFieldTypeComboBox.currentIndex())
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self.alg.setParameterValue('FIELD_LENGTH',
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self.mOutputFieldWidthSpinBox.value())
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self.alg.setParameterValue('FIELD_PRECISION',
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self.mOutputFieldPrecisionSpinBox.value())
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self.alg.setParameterValue('NEW_FIELD',
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self.mNewFieldGroupBox.isChecked())
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self.alg.setParameterValue('FORMULA', self.builder.expressionText())
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self.alg.setOutputValue('OUTPUT_LAYER',
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self.leOutputFile.text())
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msg = self.alg.checkParameterValuesBeforeExecuting()
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if msg:
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QMessageBox.warning(
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self, self.tr('Unable to execute algorithm'), msg)
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return False
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return True
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def accept(self):
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keepOpen = ProcessingConfig.getSetting(ProcessingConfig.KEEP_DIALOG_OPEN)
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try:
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if self.setParamValues():
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QApplication.setOverrideCursor(QCursor(Qt.WaitCursor))
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ProcessingLog.addToLog(ProcessingLog.LOG_ALGORITHM,
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self.alg.getAsCommand())
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self.executed = runalg(self.alg, self)
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if self.executed:
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handleAlgorithmResults(self.alg,
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self,
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not keepOpen)
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if not keepOpen:
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QDialog.reject(self)
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finally:
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QApplication.restoreOverrideCursor()
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def reject(self):
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self.executed = False
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QDialog.reject(self)
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def setPercentage(self, i):
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self.progressBar.setValue(i)
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def setText(self, text):
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pass
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def error(self, text):
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QMessageBox.critical(self, "Error", text)
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ProcessingLog.addToLog(ProcessingLog.LOG_ERROR, text)
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