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19e5886b87
By also checking for child widget signals - otherwise we don't catch signals when compound widgets (such as raster layer source widgets) are changed
135 lines
5.5 KiB
Python
135 lines
5.5 KiB
Python
# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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GdalAlgorithmDialog.py
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---------------------
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Date : May 2015
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Copyright : (C) 2015 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__ = 'May 2015'
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__copyright__ = '(C) 2015, 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 QCoreApplication
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from qgis.PyQt.QtWidgets import (QWidget,
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QVBoxLayout,
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QPushButton,
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QLabel,
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QPlainTextEdit,
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QLineEdit,
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QComboBox,
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QCheckBox,
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QSizePolicy,
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QDialogButtonBox)
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from qgis.core import (QgsProcessingFeedback,
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QgsProcessingParameterDefinition)
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from qgis.gui import (QgsMessageBar,
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QgsProjectionSelectionWidget)
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from processing.gui.AlgorithmDialog import AlgorithmDialog
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from processing.gui.AlgorithmDialogBase import AlgorithmDialogBase
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from processing.gui.ParametersPanel import ParametersPanel
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from processing.gui.MultipleInputPanel import MultipleInputPanel
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from processing.gui.NumberInputPanel import NumberInputPanel
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from processing.tools.dataobjects import createContext
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class GdalAlgorithmDialog(AlgorithmDialog):
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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.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.setMainWidget(GdalParametersPanel(self, alg))
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self.runAsBatchButton = QPushButton(QCoreApplication.translate("AlgorithmDialog", "Run as Batch Process…"))
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self.runAsBatchButton.clicked.connect(self.runAsBatch)
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self.buttonBox.addButton(self.runAsBatchButton, QDialogButtonBox.ResetRole) # reset role to ensure left alignment
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self.mainWidget.parametersHaveChanged()
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class GdalParametersPanel(ParametersPanel):
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def __init__(self, parent, alg):
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ParametersPanel.__init__(self, parent, alg)
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w = QWidget()
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layout = QVBoxLayout()
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layout.setMargin(0)
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layout.setSpacing(6)
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label = QLabel()
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label.setText(self.tr("GDAL/OGR console call"))
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layout.addWidget(label)
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self.text = QPlainTextEdit()
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self.text.setReadOnly(True)
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layout.addWidget(self.text)
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w.setLayout(layout)
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self.layoutMain.addWidget(w)
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self.connectParameterSignals()
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self.parametersHaveChanged()
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def connectParameterSignals(self):
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for wrapper in list(self.wrappers.values()):
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w = wrapper.widget
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self.connectWidgetChangedSignals(w)
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for c in w.children():
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self.connectWidgetChangedSignals(c)
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def connectWidgetChangedSignals(self, w):
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if isinstance(w, QLineEdit):
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w.textChanged.connect(self.parametersHaveChanged)
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elif isinstance(w, QComboBox):
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w.currentIndexChanged.connect(self.parametersHaveChanged)
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elif isinstance(w, QgsProjectionSelectionWidget):
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w.crsChanged.connect(self.parametersHaveChanged)
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elif isinstance(w, QCheckBox):
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w.stateChanged.connect(self.parametersHaveChanged)
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elif isinstance(w, MultipleInputPanel):
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w.selectionChanged.connect(self.parametersHaveChanged)
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elif isinstance(w, NumberInputPanel):
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w.hasChanged.connect(self.parametersHaveChanged)
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def parametersHaveChanged(self):
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context = createContext()
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feedback = QgsProcessingFeedback()
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try:
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parameters = self.parent.getParamValues()
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for output in self.alg.destinationParameterDefinitions():
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if not output.name() in parameters or parameters[output.name()] is None:
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parameters[output.name()] = self.tr("[temporary file]")
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for p in self.alg.parameterDefinitions():
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if ( not p.name() in parameters and not p.flags() & QgsProcessingParameterDefinition.FlagOptional) \
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or (not p.checkValueIsAcceptable(parameters[p.name()], context)):
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# not ready yet
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self.text.setPlainText('')
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return
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commands = self.alg.getConsoleCommands(parameters, context, feedback)
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commands = [c for c in commands if c not in ['cmd.exe', '/C ']]
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self.text.setPlainText(" ".join(commands))
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except AlgorithmDialogBase.InvalidParameterValue as e:
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self.text.setPlainText(self.tr("Invalid value for parameter '{0}'").format(e.parameter.description()))
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