| 1 | """ |
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| 2 | Widget for multi-model constraints. |
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| 3 | """ |
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| 4 | import os |
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| 5 | |
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| 6 | # numpy methods required for the validator! Don't remove. |
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| 7 | # pylint: disable=unused-import,unused-wildcard-import,redefined-builtin |
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| 8 | from numpy import * |
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| 9 | |
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| 10 | from PyQt5 import QtCore |
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| 11 | from PyQt5 import QtGui |
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| 12 | from PyQt5 import QtWidgets |
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| 13 | import webbrowser |
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| 14 | |
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| 15 | from sas.qtgui.Perspectives.Fitting import FittingUtilities |
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| 16 | import sas.qtgui.Utilities.GuiUtils as GuiUtils |
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| 17 | from sas.qtgui.Perspectives.Fitting.Constraint import Constraint |
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| 18 | |
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| 19 | #ALLOWED_OPERATORS = ['=','<','>','>=','<='] |
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| 20 | ALLOWED_OPERATORS = ['='] |
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| 21 | |
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| 22 | # Local UI |
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| 23 | from sas.qtgui.Perspectives.Fitting.UI.ComplexConstraintUI import Ui_ComplexConstraintUI |
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| 24 | |
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| 25 | class ComplexConstraint(QtWidgets.QDialog, Ui_ComplexConstraintUI): |
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| 26 | constraintReadySignal = QtCore.pyqtSignal(tuple) |
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| 27 | def __init__(self, parent=None, tabs=None): |
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| 28 | super(ComplexConstraint, self).__init__(parent) |
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| 29 | |
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| 30 | self.setupUi(self) |
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| 31 | self.setModal(True) |
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| 32 | |
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| 33 | # disable the context help icon |
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| 34 | windowFlags = self.windowFlags() |
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| 35 | self.setWindowFlags(windowFlags & ~QtCore.Qt.WindowContextHelpButtonHint) |
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| 36 | |
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| 37 | # Useful globals |
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| 38 | self.tabs = tabs |
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| 39 | self.params = None |
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| 40 | self.tab_names = None |
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| 41 | self.operator = '=' |
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| 42 | self._constraint = Constraint() |
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| 43 | self.all_menu = None |
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| 44 | |
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| 45 | self.warning = self.lblWarning.text() |
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| 46 | self.setupData() |
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| 47 | self.setupSignals() |
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| 48 | self.setupWidgets() |
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| 49 | self.setupTooltip() |
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| 50 | |
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| 51 | # Default focus is on OK |
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| 52 | self.cmdOK.setFocus() |
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| 53 | |
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| 54 | def setupData(self): |
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| 55 | """ |
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| 56 | Digs into self.tabs and pulls out relevant info |
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| 57 | """ |
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| 58 | self.tab_names = [tab.kernel_module.name for tab in self.tabs] |
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| 59 | self.params = [tab.getParamNames() for tab in self.tabs] |
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| 60 | |
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| 61 | def setupSignals(self): |
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| 62 | """ |
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| 63 | Signals from various elements |
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| 64 | """ |
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| 65 | self.cmdOK.clicked.connect(self.onApply) |
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| 66 | self.cmdHelp.clicked.connect(self.onHelp) |
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| 67 | self.cmdAddAll.clicked.connect(self.onSetAll) |
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| 68 | |
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| 69 | self.txtConstraint.editingFinished.connect(self.validateFormula) |
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| 70 | self.cbModel1.currentIndexChanged.connect(self.onModelIndexChange) |
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| 71 | self.cbModel2.currentIndexChanged.connect(self.onModelIndexChange) |
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| 72 | |
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| 73 | self.cbParam1.currentIndexChanged.connect(self.onParamIndexChange) |
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| 74 | self.cbParam2.currentIndexChanged.connect(self.onParamIndexChange) |
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| 75 | self.cbOperator.currentIndexChanged.connect(self.onOperatorChange) |
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| 76 | |
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| 77 | def setupWidgets(self): |
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| 78 | """ |
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| 79 | Setup widgets based on current parameters |
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| 80 | """ |
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| 81 | self.cbModel1.insertItems(0, self.tab_names) |
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| 82 | self.cbModel2.insertItems(0, self.tab_names) |
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| 83 | |
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| 84 | self.setupParamWidgets() |
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| 85 | |
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| 86 | |
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| 87 | self.setupMenu() |
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| 88 | |
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| 89 | def setupMenu(self): |
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| 90 | # Show Add All button, if necessary |
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| 91 | if self.cbModel1.currentText() ==self.cbModel2.currentText(): |
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| 92 | self.cmdAddAll.setVisible(False) |
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| 93 | else: |
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| 94 | self.cmdAddAll.setVisible(True) |
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| 95 | return |
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| 96 | |
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| 97 | def setupParamWidgets(self): |
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| 98 | """ |
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| 99 | Fill out comboboxes and set labels with non-constrained parameters |
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| 100 | """ |
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| 101 | self.cbParam1.clear() |
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| 102 | tab_index1 = self.cbModel1.currentIndex() |
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| 103 | items1 = [param for param in self.params[tab_index1] if not self.tabs[tab_index1].paramHasConstraint(param)] |
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| 104 | self.cbParam1.addItems(items1) |
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| 105 | |
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| 106 | # M2 doesn't have to be non-constrained |
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| 107 | self.cbParam2.clear() |
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| 108 | tab_index2 = self.cbModel2.currentIndex() |
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| 109 | items2 = [param for param in self.params[tab_index2]] |
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| 110 | self.cbParam2.addItems(items2) |
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| 111 | |
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| 112 | self.txtParam.setText(self.tab_names[tab_index1] + ":" + self.cbParam1.currentText()) |
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| 113 | |
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| 114 | self.cbOperator.clear() |
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| 115 | self.cbOperator.addItems(ALLOWED_OPERATORS) |
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| 116 | self.txtOperator.setText(self.cbOperator.currentText()) |
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| 117 | |
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| 118 | self.txtConstraint.setText(self.tab_names[tab_index2]+"."+self.cbParam2.currentText()) |
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| 119 | |
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| 120 | # disable Apply if no parameters available |
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| 121 | if len(items1)==0: |
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| 122 | self.cmdOK.setEnabled(False) |
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| 123 | self.cmdAddAll.setEnabled(False) |
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| 124 | txt = "No parameters in model "+self.tab_names[0] +\ |
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| 125 | " are available for constraining." |
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| 126 | self.lblWarning.setText(txt) |
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| 127 | else: |
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| 128 | self.cmdOK.setEnabled(True) |
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| 129 | self.cmdAddAll.setEnabled(True) |
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| 130 | txt = "" |
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| 131 | self.lblWarning.setText(txt) |
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| 132 | |
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| 133 | def setupTooltip(self): |
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| 134 | """ |
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| 135 | Tooltip for txtConstraint |
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| 136 | """ |
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| 137 | p1 = self.tab_names[0] + ":" + self.cbParam1.currentText() |
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| 138 | p2 = self.tab_names[1]+"."+self.cbParam2.currentText() |
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| 139 | tooltip = "E.g.\n%s = 2.0 * (%s)\n" %(p1, p2) |
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| 140 | tooltip += "%s = sqrt(%s) + 5"%(p1, p2) |
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| 141 | self.txtConstraint.setToolTip(tooltip) |
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| 142 | |
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| 143 | def onParamIndexChange(self, index): |
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| 144 | """ |
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| 145 | Respond to parameter combo box changes |
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| 146 | """ |
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| 147 | # Find out the signal source |
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| 148 | source = self.sender().objectName() |
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| 149 | param1 = self.cbParam1.currentText() |
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| 150 | param2 = self.cbParam2.currentText() |
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| 151 | if source == "cbParam1": |
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| 152 | self.txtParam.setText(self.tab_names[0] + ":" + param1) |
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| 153 | else: |
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| 154 | self.txtConstraint.setText(self.tab_names[1] + "." + param2) |
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| 155 | # Check if any of the parameters are polydisperse |
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| 156 | params_list = [param1, param2] |
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| 157 | all_pars = [tab.model_parameters for tab in self.tabs] |
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| 158 | is2Ds = [tab.is2D for tab in self.tabs] |
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| 159 | txt = "" |
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| 160 | for pars, is2D in zip(all_pars, is2Ds): |
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| 161 | if any([FittingUtilities.isParamPolydisperse(p, pars, is2D) for p in params_list]): |
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| 162 | # no parameters are pd - reset the text to not show the warning |
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| 163 | txt = self.warning |
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| 164 | self.lblWarning.setText(txt) |
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| 165 | |
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| 166 | def onModelIndexChange(self, index): |
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| 167 | """ |
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| 168 | Respond to mode combo box changes |
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| 169 | """ |
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| 170 | # disable/enable Add All |
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| 171 | self.setupMenu() |
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| 172 | # Reload parameters |
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| 173 | self.setupParamWidgets() |
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| 174 | |
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| 175 | def onOperatorChange(self, index): |
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| 176 | """ |
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| 177 | Respond to operator combo box changes |
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| 178 | """ |
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| 179 | self.txtOperator.setText(self.cbOperator.currentText()) |
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| 180 | |
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| 181 | def validateFormula(self): |
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| 182 | """ |
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| 183 | Add visual cues when formula is incorrect |
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| 184 | """ |
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| 185 | # temporarily disable validation |
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| 186 | return |
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| 187 | # |
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| 188 | formula_is_valid = self.validateConstraint(self.txtConstraint.text()) |
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| 189 | if not formula_is_valid: |
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| 190 | self.cmdOK.setEnabled(False) |
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| 191 | self.cmdAddAll.setEnabled(False) |
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| 192 | self.txtConstraint.setStyleSheet("QLineEdit {background-color: red;}") |
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| 193 | else: |
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| 194 | self.cmdOK.setEnabled(True) |
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| 195 | self.cmdAddAll.setEnabled(True) |
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| 196 | self.txtConstraint.setStyleSheet("QLineEdit {background-color: white;}") |
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| 197 | |
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| 198 | def validateConstraint(self, constraint_text): |
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| 199 | """ |
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| 200 | Ensure the constraint has proper form |
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| 201 | """ |
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| 202 | # 0. none or empty |
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| 203 | if not constraint_text or not isinstance(constraint_text, str): |
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| 204 | return False |
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| 205 | |
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| 206 | # M1.scale --> model_str='M1', constraint_text='scale' |
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| 207 | param_str = self.cbParam2.currentText() |
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| 208 | constraint_text = constraint_text.strip() |
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| 209 | model_str = self.cbModel2.currentText() |
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| 210 | |
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| 211 | # 0. Has to contain the model name |
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| 212 | if model_str != model_str: |
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| 213 | return False |
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| 214 | |
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| 215 | # Remove model name from constraint |
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| 216 | constraint_text = constraint_text.replace(model_str+".",'') |
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| 217 | |
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| 218 | # 1. just the parameter |
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| 219 | if param_str == constraint_text: |
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| 220 | return True |
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| 221 | |
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| 222 | # 2. ensure the text contains parameter name |
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| 223 | parameter_string_start = constraint_text.find(param_str) |
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| 224 | if parameter_string_start < 0: |
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| 225 | return False |
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| 226 | |
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| 227 | # 3. replace parameter name with "1" and try to evaluate the expression |
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| 228 | try: |
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| 229 | expression_to_evaluate = constraint_text.replace(param_str, "1.0") |
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| 230 | eval(expression_to_evaluate) |
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| 231 | except Exception: |
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| 232 | # Too many cases to cover individually, just a blanket |
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| 233 | # Exception should be sufficient |
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| 234 | # Note that in current numpy things like sqrt(-1) don't |
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| 235 | # raise but just return warnings |
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| 236 | return False |
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| 237 | |
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| 238 | return True |
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| 239 | |
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| 240 | def constraint(self): |
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| 241 | """ |
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| 242 | Return the generated constraint |
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| 243 | """ |
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| 244 | param = self.cbParam1.currentText() |
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| 245 | value = self.cbParam2.currentText() |
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| 246 | func = self.txtConstraint.text() |
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| 247 | value_ex = self.cbModel2.currentText() + "." + self.cbParam2.currentText() |
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| 248 | model1 = self.cbModel1.currentText() |
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| 249 | operator = self.cbOperator.currentText() |
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| 250 | |
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| 251 | con = Constraint(self, |
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| 252 | param=param, |
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| 253 | value=value, |
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| 254 | func=func, |
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| 255 | value_ex=value_ex, |
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| 256 | operator=operator) |
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| 257 | |
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| 258 | return (model1, con) |
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| 259 | |
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| 260 | def onApply(self): |
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| 261 | """ |
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| 262 | Respond to Add constraint action. |
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| 263 | Send a signal that the constraint is ready to be applied |
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| 264 | """ |
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| 265 | cons_tuple = self.constraint() |
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| 266 | self.constraintReadySignal.emit(cons_tuple) |
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| 267 | # reload the comboboxes |
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| 268 | self.setupParamWidgets() |
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| 269 | |
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| 270 | def onSetAll(self): |
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| 271 | """ |
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| 272 | Set constraints on all identically named parameters between two fitpages |
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| 273 | """ |
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| 274 | # loop over parameters in constrained model |
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| 275 | index1 = self.cbModel1.currentIndex() |
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| 276 | index2 = self.cbModel2.currentIndex() |
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| 277 | items1 = [param for param in self.params[index1] if not self.tabs[index1].paramHasConstraint(param)] |
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| 278 | items2 = self.params[index2] |
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| 279 | for item in items1: |
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| 280 | if item not in items2: continue |
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| 281 | param = item |
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| 282 | value = item |
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| 283 | func = self.cbModel2.currentText() + "." + param |
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| 284 | value_ex = self.cbModel1.currentText() + "." + param |
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| 285 | model1 = self.cbModel1.currentText() |
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| 286 | operator = self.cbOperator.currentText() |
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| 287 | |
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| 288 | con = Constraint(self, |
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| 289 | param=param, |
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| 290 | value=value, |
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| 291 | func=func, |
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| 292 | value_ex=value_ex, |
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| 293 | operator=operator) |
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| 294 | |
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| 295 | self.constraintReadySignal.emit((model1, con)) |
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| 296 | |
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| 297 | # reload the comboboxes |
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| 298 | self.setupParamWidgets() |
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| 299 | |
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| 300 | def onHelp(self): |
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| 301 | """ |
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| 302 | Display related help section |
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| 303 | """ |
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| 304 | try: |
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| 305 | help_location = GuiUtils.HELP_DIRECTORY_LOCATION + \ |
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| 306 | "/user/qtgui/Perspectives/Fitting/fitting_help.html#simultaneous-fits-with-constraints" |
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| 307 | webbrowser.open('file://' + os.path.realpath(help_location)) |
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| 308 | except AttributeError: |
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| 309 | # No manager defined - testing and standalone runs |
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| 310 | pass |
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| 311 | |
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| 312 | |
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| 313 | |
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