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# -*- coding: utf-8 -*-
"""
***************************************************************************
CalculatorModelerParametersDialog.py
---------------------
Date : August 2012
Copyright : (C) 2012 by Victor Olaya
Email : volayaf at gmail dot com
***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************
"""
__author__ = 'Victor Olaya'
__date__ = 'August 2012'
__copyright__ = '(C) 2012, Victor Olaya'
# This will get replaced with a git SHA1 when you do a git archive
__revision__ = '$Format:%H$'
from PyQt4.QtCore import *
from PyQt4.QtGui import *
from PyQt4 import QtCore, QtGui
from processing.parameters.ParameterNumber import ParameterNumber
from processing.modeler.ModelerAlgorithm import AlgorithmAndParameter
from processing.outputs.OutputNumber import OutputNumber
class CalculatorModelerParametersDialog(QtGui.QDialog):
def __init__(self, alg, model, algIndex):
QtGui.QDialog.__init__(self)
self.setModal(True)
self.alg = alg
self.model = model
self.algIndex = algIndex
self.setupUi()
self.params = None
def setupUi(self):
self.valueItems = {}
self.dependentItems = {}
self.resize(650, 450)
self.buttonBox = QtGui.QDialogButtonBox()
self.buttonBox.setOrientation(QtCore.Qt.Horizontal)
self.buttonBox.setStandardButtons(QtGui.QDialogButtonBox.Cancel
| QtGui.QDialogButtonBox.Ok)
self.infoText = QtGui.QTextEdit()
numbers = self.getNumbers()
text = 'You can refer to model values in you formula, using \
single-letter variables, as follows:'
ichar = 97
for number in numbers:
text += chr(ichar) + '->' + number.name() + '\n'
ichar += 1
self.infoText.setText(text)
self.infoText.setEnabled(False)
self.formulaText = QtGui.QLineEdit()
if hasattr(self.formulaText, 'setPlaceholderText'):
self.formulaText.setPlaceholderText('[Enter your formula here]')
self.setWindowTitle(self.alg.name)
self.verticalLayout = QtGui.QVBoxLayout()
self.verticalLayout.setSpacing(2)
self.verticalLayout.setMargin(0)
self.verticalLayout.addWidget(self.infoText)
self.verticalLayout.addWidget(self.formulaText)
self.verticalLayout.addWidget(self.buttonBox)
self.setLayout(self.verticalLayout)
QtCore.QObject.connect(self.buttonBox, QtCore.SIGNAL('accepted()'),
self.okPressed)
QtCore.QObject.connect(self.buttonBox, QtCore.SIGNAL('rejected()'),
self.cancelPressed)
QtCore.QMetaObject.connectSlotsByName(self)
def getNumbers(self):
numbers = []
params = self.model.parameters
for param in params:
if isinstance(param, ParameterNumber):
numbers.append(AlgorithmAndParameter(
AlgorithmAndParameter.PARENT_MODEL_ALGORITHM,
param.name, '', param.description))
if self.algIndex is None:
dependent = []
else:
dependent = self.model.getDependentAlgorithms(self.algIndex)
dependent.append(self.algIndex)
i = 0
for alg in self.model.algs:
if i not in dependent:
for out in alg.outputs:
if isinstance(out, OutputNumber):
numbers.append(AlgorithmAndParameter(i, out.name,
alg.name, out.description))
i += 1
return numbers
def setParamValues(self):
self.params = {}
self.values = {}
self.outputs = {}
name = self.getSafeNameForHarcodedParameter(
self.alg.getParameterFromName(self.alg.FORMULA))
value = AlgorithmAndParameter(
AlgorithmAndParameter.PARENT_MODEL_ALGORITHM, name)
self.params[self.alg.FORMULA] = value
formula = str(self.formulaText.text())
self.values[name] = formula
numbers = self.getNumbers()
used = []
for i in range(len(numbers)):
if str(chr(i + 97)) in formula:
used.append(numbers[i])
i = 0
for variable in used:
paramname = self.alg.NUMBER + str(i)
self.params[paramname] = variable
i += 1
# We create a dummy harcoded value for all unused variable slots
paramname = self.alg.NUMBER + str(i)
name = self.getSafeNameForHarcodedParameter(
self.alg.getParameterFromName(paramname))
value = AlgorithmAndParameter(
AlgorithmAndParameter.PARENT_MODEL_ALGORITHM, name)
self.values[name] = 0
for i in range(len(used), self.alg.AVAILABLE_VARIABLES):
paramname = self.alg.NUMBER + str(i)
self.params[paramname] = value
self.outputs[self.alg.RESULT] = None
self.dependencies = []
return True
def getSafeNameForHarcodedParameter(self, param):
if self.algIndex is not None:
return 'HARDCODEDPARAMVALUE_' + param.name + '_' \
+ str(self.algIndex)
else:
return 'HARDCODEDPARAMVALUE_' + param.name + '_' \
+ str(len(self.model.algs))
def okPressed(self):
if self.setParamValues():
self.close()
else:
QMessageBox.critical(self, 'Unable to add algorithm',
'Wrong or missing parameter values')
self.params = None
def cancelPressed(self):
self.params = None
self.close()
|
