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257 lines
11 KiB
Python
257 lines
11 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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from builtins import range
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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, QSizePolicy
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from qgis.PyQt.QtGui import QCursor, QColor, QPalette
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from qgis.core import (QgsProject,
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QgsProcessingUtils)
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from qgis.gui import QgsMessageBar
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from qgis.utils import iface
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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.AlgorithmDialogBase import AlgorithmDialogBase
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from processing.gui.AlgorithmExecutor import execute, executeIterating
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from processing.gui.Postprocessing import handleAlgorithmResults
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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 ParameterExtent
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from processing.core.parameters import ParameterMultipleInput
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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.setMainWidget(alg.getParametersPanel(self))
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self.bar = QgsMessageBar()
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self.bar.setSizePolicy(QSizePolicy.Minimum, QSizePolicy.Fixed)
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self.layout().insertWidget(0, self.bar)
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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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def runAsBatch(self):
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self.close()
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dlg = BatchAlgorithmDialog(self.alg)
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dlg.show()
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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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wrapper = self.mainWidget.wrappers[param.name]
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if not self.setParamValue(param, wrapper):
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raise AlgorithmDialogBase.InvalidParameterValue(param, wrapper.widget)
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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.outputWidgets[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 setParamValue(self, param, wrapper):
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if wrapper.widget:
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return param.setValue(wrapper.value())
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else:
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return True
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def checkExtentCRS(self):
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unmatchingCRS = False
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hasExtent = False
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context = dataobjects.createContext()
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projectCRS = iface.mapCanvas().mapSettings().destinationCrs()
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layers = QgsProcessingUtils.compatibleLayers(QgsProject.instance())
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for param in self.alg.parameters:
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if isinstance(param, (ParameterRaster, ParameterVector, ParameterMultipleInput)):
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if param.value:
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if isinstance(param, ParameterMultipleInput):
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inputlayers = param.value.split(';')
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else:
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inputlayers = [param.value]
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for inputlayer in inputlayers:
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for layer in layers:
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if layer.source() == inputlayer:
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if layer.crs() != projectCRS:
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unmatchingCRS = True
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p = QgsProcessingUtils.mapLayerFromString(inputlayer, context)
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if p is not None:
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if p.crs() != projectCRS:
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unmatchingCRS = True
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if isinstance(param, ParameterExtent):
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if param.skip_crs_check:
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continue
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value = self.mainWidget.wrappers[param.name].widget.leText.text().strip()
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if value:
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hasExtent = True
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return hasExtent and unmatchingCRS
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def accept(self):
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self.settings.setValue("/Processing/dialogBase", self.saveGeometry())
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context = dataobjects.createContext()
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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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checkExtentCRS = ProcessingConfig.getSetting(ProcessingConfig.WARN_UNMATCHING_EXTENT_CRS)
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if checkExtentCRS and self.checkExtentCRS():
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reply = QMessageBox.question(self, self.tr("Extent CRS"),
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self.tr('Extent parameters must use the same CRS as the input layers.\n'
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'Your input layers do not have the same extent as the project, '
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'so the extent might be in a wrong CRS if you have selected it from the canvas.\n'
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'Do you want to 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(context)
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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(list(buttons.values()))):
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button = list(buttons.values())[i]
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if button.isChecked():
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self.iterateParam = list(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 {0} starting...</b>').format(self.alg.displayName()))
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if self.iterateParam:
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if executeIterating(self.alg, self.iterateParam, context, self.feedback):
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self.finish(context)
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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(command)
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if execute(self.alg, context, self.feedback):
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self.finish(context)
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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 e=e:
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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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except:
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pass
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self.bar.clearWidgets()
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self.bar.pushMessage("", self.tr("Wrong or missing parameter value: {0}").format(e.parameter.description),
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level=QgsMessageBar.WARNING, duration=5)
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def finish(self, context):
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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, context, self.feedback, 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(self.tr('Algorithm {0} finished').format(self.alg.displayName()))
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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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QgsProject.instance().layerWasAdded.disconnect(self.mainWidget.layerRegistryChanged)
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QgsProject.instance().layersWillBeRemoved.disconnect(self.mainWidget.layerRegistryChanged)
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super(AlgorithmDialog, self).closeEvent(evt)
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