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293 lines
12 KiB
Python
293 lines
12 KiB
Python
# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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AlgorithmDialog.py
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---------------------
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Date : August 2012
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Copyright : (C) 2012 by Victor Olaya
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Email : volayaf 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__ = 'Victor Olaya'
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__date__ = 'August 2012'
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__copyright__ = '(C) 2012, Victor Olaya'
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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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from qgis.PyQt.QtCore import Qt
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from qgis.PyQt.QtWidgets import QMessageBox, QApplication, QPushButton, QWidget, QVBoxLayout
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from qgis.PyQt.QtGui import QCursor, QColor, QPalette
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from qgis.core import QgsMapLayerRegistry, QgsExpressionContext, QgsExpressionContextUtils, QgsExpression
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from processing.core.ProcessingLog import ProcessingLog
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from processing.core.ProcessingConfig import ProcessingConfig
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from processing.gui.BatchAlgorithmDialog import BatchAlgorithmDialog
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from processing.gui.ParametersPanel import ParametersPanel
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from processing.gui.AlgorithmDialogBase import AlgorithmDialogBase
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from processing.gui.AlgorithmExecutor import runalg, runalgIterating
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from processing.gui.Postprocessing import handleAlgorithmResults
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from processing.core.parameters import ParameterExtent
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from processing.core.parameters import ParameterRaster
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from processing.core.parameters import ParameterVector
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from processing.core.parameters import ParameterTable
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from processing.core.parameters import ParameterBoolean
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from processing.core.parameters import ParameterSelection
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from processing.core.parameters import ParameterFixedTable
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from processing.core.parameters import ParameterRange
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from processing.core.parameters import ParameterTableField
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from processing.core.parameters import ParameterTableMultipleField
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from processing.core.parameters import ParameterMultipleInput
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from processing.core.parameters import ParameterString
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from processing.core.parameters import ParameterNumber
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from processing.core.parameters import ParameterFile
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from processing.core.parameters import ParameterCrs
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from processing.core.parameters import ParameterPoint
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from processing.core.parameters import ParameterGeometryPredicate
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from processing.core.outputs import OutputRaster
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from processing.core.outputs import OutputVector
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from processing.core.outputs import OutputTable
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from processing.tools import dataobjects
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class AlgorithmDialog(AlgorithmDialogBase):
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def __init__(self, alg):
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AlgorithmDialogBase.__init__(self, alg)
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self.alg = alg
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self.mainWidget = ParametersPanel(self, alg)
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self.setMainWidget()
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self.cornerWidget = QWidget()
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layout = QVBoxLayout()
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layout.setContentsMargins(0, 0, 0, 5)
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self.tabWidget.setStyleSheet("QTabBar::tab { height: 30px; }")
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self.runAsBatchButton = QPushButton(self.tr("Run as batch process..."))
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self.runAsBatchButton.clicked.connect(self.runAsBatch)
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layout.addWidget(self.runAsBatchButton)
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self.cornerWidget.setLayout(layout)
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self.tabWidget.setCornerWidget(self.cornerWidget)
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QgsMapLayerRegistry.instance().layerWasAdded.connect(self.mainWidget.layerAdded)
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QgsMapLayerRegistry.instance().layersWillBeRemoved.connect(self.mainWidget.layersWillBeRemoved)
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def runAsBatch(self):
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dlg = BatchAlgorithmDialog(self.alg)
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dlg.exec_()
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def setParamValues(self):
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params = self.alg.parameters
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outputs = self.alg.outputs
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for param in params:
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if param.hidden:
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continue
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if isinstance(param, ParameterExtent):
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continue
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if not self.setParamValue(
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param, self.mainWidget.valueItems[param.name]):
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raise AlgorithmDialogBase.InvalidParameterValue(
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param, self.mainWidget.valueItems[param.name])
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for param in params:
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if isinstance(param, ParameterExtent):
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if not self.setParamValue(
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param, self.mainWidget.valueItems[param.name]):
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raise AlgorithmDialogBase.InvalidParameterValue(
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param, self.mainWidget.valueItems[param.name])
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for output in outputs:
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if output.hidden:
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continue
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output.value = self.mainWidget.valueItems[output.name].getValue()
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if isinstance(output, (OutputRaster, OutputVector, OutputTable)):
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output.open = self.mainWidget.checkBoxes[output.name].isChecked()
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return True
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def evaluateExpression(self, text):
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context = QgsExpressionContext()
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context.appendScope(QgsExpressionContextUtils.globalScope())
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context.appendScope(QgsExpressionContextUtils.projectScope())
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exp = QgsExpression(text)
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if exp.hasParserError():
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raise Exception(exp.parserErrorString())
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result = exp.evaluate(context)
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if exp.hasEvalError():
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raise ValueError(exp.evalErrorString())
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return result
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def setParamValue(self, param, widget, alg=None):
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if isinstance(param, ParameterRaster):
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return param.setValue(widget.getValue())
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elif isinstance(param, (ParameterVector, ParameterTable)):
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try:
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return param.setValue(widget.itemData(widget.currentIndex()))
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except:
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return param.setValue(widget.getValue())
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elif isinstance(param, ParameterBoolean):
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return param.setValue(widget.isChecked())
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elif isinstance(param, ParameterSelection):
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return param.setValue(widget.currentIndex())
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elif isinstance(param, ParameterFixedTable):
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return param.setValue(widget.table)
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elif isinstance(param, ParameterRange):
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return param.setValue(widget.getValue())
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elif isinstance(param, ParameterTableField):
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if param.optional and widget.currentIndex() == 0:
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return param.setValue(None)
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return param.setValue(widget.currentText())
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elif isinstance(param, ParameterTableMultipleField):
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if param.optional and len(list(widget.get_selected_items())) == 0:
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return param.setValue(None)
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return param.setValue(list(widget.get_selected_items()))
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elif isinstance(param, ParameterMultipleInput):
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if param.datatype == ParameterMultipleInput.TYPE_FILE:
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return param.setValue(widget.selectedoptions)
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else:
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if param.datatype == ParameterMultipleInput.TYPE_RASTER:
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options = dataobjects.getRasterLayers(sorting=False)
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elif param.datatype == ParameterMultipleInput.TYPE_VECTOR_ANY:
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options = dataobjects.getVectorLayers(sorting=False)
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else:
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options = dataobjects.getVectorLayers([param.datatype], sorting=False)
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return param.setValue([options[i] for i in widget.selectedoptions])
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elif isinstance(param, (ParameterNumber, ParameterFile, ParameterCrs,
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ParameterExtent, ParameterPoint)):
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return param.setValue(widget.getValue())
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elif isinstance(param, ParameterString):
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if param.multiline:
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text = unicode(widget.toPlainText())
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else:
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text = widget.text()
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if param.evaluateExpressions:
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try:
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text = self.evaluateExpression(text)
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except:
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pass
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return param.setValue(text)
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elif isinstance(param, ParameterGeometryPredicate):
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return param.setValue(widget.value())
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else:
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return param.setValue(unicode(widget.text()))
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def accept(self):
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self.settings.setValue("/Processing/dialogBase", self.saveGeometry())
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checkCRS = ProcessingConfig.getSetting(ProcessingConfig.WARN_UNMATCHING_CRS)
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try:
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self.setParamValues()
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if checkCRS and not self.alg.checkInputCRS():
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reply = QMessageBox.question(self, self.tr("Unmatching CRS's"),
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self.tr('Layers do not all use the same CRS. This can '
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'cause unexpected results.\nDo you want to '
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'continue?'),
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QMessageBox.Yes | QMessageBox.No,
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QMessageBox.No)
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if reply == QMessageBox.No:
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return
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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
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self.btnRun.setEnabled(False)
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self.btnClose.setEnabled(False)
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buttons = self.mainWidget.iterateButtons
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self.iterateParam = None
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for i in range(len(buttons.values())):
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button = buttons.values()[i]
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if button.isChecked():
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self.iterateParam = buttons.keys()[i]
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break
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self.progressBar.setMaximum(0)
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self.lblProgress.setText(self.tr('Processing algorithm...'))
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# Make sure the Log tab is visible before executing the algorithm
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try:
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self.tabWidget.setCurrentIndex(1)
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self.repaint()
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except:
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pass
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QApplication.setOverrideCursor(QCursor(Qt.WaitCursor))
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self.setInfo(
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self.tr('<b>Algorithm %s starting...</b>') % self.alg.name)
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if self.iterateParam:
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if runalgIterating(self.alg, self.iterateParam, self):
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self.finish()
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else:
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QApplication.restoreOverrideCursor()
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self.resetGUI()
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else:
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command = self.alg.getAsCommand()
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if command:
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ProcessingLog.addToLog(
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ProcessingLog.LOG_ALGORITHM, command)
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if runalg(self.alg, self):
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self.finish()
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else:
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QApplication.restoreOverrideCursor()
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self.resetGUI()
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except AlgorithmDialogBase.InvalidParameterValue as e:
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try:
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self.buttonBox.accepted.connect(lambda:
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e.widget.setPalette(QPalette()))
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palette = e.widget.palette()
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palette.setColor(QPalette.Base, QColor(255, 255, 0))
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e.widget.setPalette(palette)
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self.lblProgress.setText(
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self.tr('<b>Missing parameter value: %s</b>') % e.parameter.description)
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return
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except:
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QMessageBox.critical(self,
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self.tr('Unable to execute algorithm'),
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self.tr('Wrong or missing parameter values'))
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def finish(self):
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keepOpen = ProcessingConfig.getSetting(ProcessingConfig.KEEP_DIALOG_OPEN)
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if self.iterateParam is None:
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if not handleAlgorithmResults(self.alg, self, not keepOpen):
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self.resetGUI()
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return
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self.executed = True
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self.setInfo('Algorithm %s finished' % self.alg.name)
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QApplication.restoreOverrideCursor()
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if not keepOpen:
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self.close()
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else:
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self.resetGUI()
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if self.alg.getHTMLOutputsCount() > 0:
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self.setInfo(
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self.tr('HTML output has been generated by this algorithm.'
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'\nOpen the results dialog to check it.'))
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def closeEvent(self, evt):
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QgsMapLayerRegistry.instance().layerWasAdded.disconnect(self.mainWidget.layerAdded)
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QgsMapLayerRegistry.instance().layersWillBeRemoved.disconnect(self.mainWidget.layersWillBeRemoved)
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super(AlgorithmDialog, self).closeEvent(evt)
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