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135 lines
6.2 KiB
Python
135 lines
6.2 KiB
Python
# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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NumberInputPanel.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 str
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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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import os
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from qgis.PyQt import uic
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from qgis.PyQt.QtCore import pyqtSignal
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from qgis.PyQt.QtWidgets import QDialog
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from qgis.core import (QgsDataSourceUri,
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QgsCredentials,
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QgsExpression,
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QgsRasterLayer,
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QgsExpressionContextScope)
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from qgis.gui import QgsEncodingFileDialog, QgsExpressionBuilderDialog
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from qgis.utils import iface
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from processing.core.parameters import ParameterNumber, ParameterVector, ParameterRaster
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from processing.core.outputs import OutputNumber, OutputVector, OutputRaster
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from processing.modeler.ModelerAlgorithm import ValueFromInput, ValueFromOutput, CompoundValue
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pluginPath = os.path.split(os.path.dirname(__file__))[0]
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WIDGET, BASE = uic.loadUiType(
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os.path.join(pluginPath, 'ui', 'widgetBaseSelector.ui'))
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class NumberInputPanel(BASE, WIDGET):
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hasChanged = pyqtSignal()
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def __init__(self, param, modelParametersDialog=None):
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super(NumberInputPanel, self).__init__(None)
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self.setupUi(self)
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self.param = param
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self.modelParametersDialog = modelParametersDialog
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if param.default:
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self.setValue(param.default)
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self.btnSelect.clicked.connect(self.showExpressionsBuilder)
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self.leText.textChanged.connect(lambda: self.hasChanged.emit())
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def showExpressionsBuilder(self):
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context = self.param.expressionContext()
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dlg = QgsExpressionBuilderDialog(None, self.leText.text(), self, 'generic', context)
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if self.modelParametersDialog is not None:
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context.popScope()
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values = self.modelParametersDialog.getAvailableValuesOfType(ParameterNumber, OutputNumber)
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variables = {}
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for value in values:
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if isinstance(value, ValueFromInput):
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name = value.name
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element = self.modelParametersDialog.model.inputs[name].param
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desc = element.description
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else:
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name = "%s_%s" % (value.alg, value.output)
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alg = self.modelParametersDialog.model.algs[value.alg]
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out = alg.algorithm.getOutputFromName(value.output)
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desc = "Output '%s' from algorithm '%s" % (out.description, alg.description)
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variables[name] = desc
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values = self.modelParametersDialog.getAvailableValuesOfType(ParameterVector, OutputVector)
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values.extend(self.modelParametersDialog.getAvailableValuesOfType(ParameterRaster, OutputRaster))
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for value in values:
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if isinstance(value, ValueFromInput):
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name = value.name
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element = self.modelParametersDialog.model.inputs[name].param
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desc = element.description
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else:
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name = "%s_%s" % (value.alg, value.output)
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alg = self.modelParametersDialog.model.algs[value.alg]
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element = alg.algorithm.getOutputFromName(value.output)
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desc = "Output '%s' from algorithm '%s" % (element.description, alg.description)
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variables['%s_minx' % name] = "Minimum X of %s" % desc
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variables['%s_miny' % name] = "Maximum X of %s" % desc
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variables['%s_maxx' % name] = "Minimum Y of %s" % desc
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variables['%s_maxy' % name] = "Maximum Y of %s" % desc
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if isinstance(element, (ParameterRaster, OutputRaster)):
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variables['%s_min' % name] = "Minimum value of %s" % desc
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variables['%s_max' % name] = "Maximum value of %s" % desc
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variables['%s_avg' % name] = "Mean value of %s" % desc
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variables['%s_stddev' % name] = "Standard deviation of %s" % desc
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for variable, desc in variables.iteritems():
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dlg.expressionBuilder().registerItem("Modeler", variable, "@" + variable, desc, highlightedItem=True)
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dlg.setWindowTitle(self.tr('Expression based input'))
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if dlg.exec_() == QDialog.Accepted:
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exp = QgsExpression(dlg.expressionText())
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if not exp.hasParserError():
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self.setValue(dlg.expressionText())
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def getValue(self):
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if self.modelParametersDialog:
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value = self.leText.text()
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values = []
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for param in self.modelParametersDialog.model.parameters:
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if isinstance(param, ParameterNumber):
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if "@" + param.name in value:
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values.append(ValueFromInput(param.name))
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for alg in list(self.modelParametersDialog.model.algs.values()):
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for out in alg.algorithm.outputs:
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if isinstance(out, OutputNumber) and "@%s_%s" % (alg.name, out.name) in value:
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values.append(ValueFromOutput(alg.name, out.name))
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if values:
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return CompoundValue(values, value)
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else:
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return value
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else:
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return self.leText.text()
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def setValue(self, value):
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self.leText.setText(str(value))
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