def centeredCheckBox(self):
"""
Instantiates a centered check box.
:return: (QWidget) a QCheckBox centered on a widget.
"""
w = QWidget()
l = QHBoxLayout()
l.setAlignment(Qt.AlignCenter)
cb = QCheckBox()
# just an easy way to access the cb
w.cb = cb
l.addWidget(cb)
w.setLayout(l)
return w
def modelerPanel(self):
"""
Returns the table prepared for the modeler Processing GUI.
:return: (OrderedTableWidget) DSGTools customized table widget.
"""
widget = QWidget()
layout = QVBoxLayout()
# added as an attribute in order to make it easier to be read
widget.cb = QCheckBox()
widget.cb.setText(self.tr("Use DE-9IM inputs"))
layout.addWidget(widget.cb)
widget.otw = OrderedTableWidget(
headerMap={
0: {
"header": self.tr("Rule name"),
"type": "widget",
"widget": self.ruleNameWidget,
"setter": "setText",
"getter": "text"
},
1: {
"header": self.tr("Layer A"),
"type": "widget",
"widget": self.mapLayerModelDialog,
"setter": "setText",
"getter": "text"
},
2: {
"header": self.tr("Filter A"),
"type": "widget",
"widget": self.filterExpressionWidget,
"setter": "setExpression_",
"getter": "currentText_"
},
3: {
"header": self.tr("Predicate"),
"type": "widget",
"widget": self.predicateComboBox,
"setter": "setCurrentIndex",
"getter": "currentIndex"
},
4: {
"header": self.tr("DE-9IM mask predicate"),
"type": "widget",
"widget": self.de9imWidget,
"setter": "setText",
"getter": "text"
},
5: {
"header": self.tr("Layer B"),
"type": "widget",
"widget": self.mapLayerModelDialog,
"setter": "setText",
"getter": "text"
},
6: {
"header": self.tr("Filter B"),
"type": "widget",
"widget": self.filterExpressionWidget,
"setter": "setExpression_",
"getter": "currentText_"
},
7: {
"header": self.tr("Cardinality"),
"type": "widget",
"widget": self.cardinalityWidget,
"setter": "setText",
"getter": "text"
}
})
def handlePredicateColumns(checked):
"""
Predicate input widgets are mutually exclusively: the user may only
input data through either of them. This method manages hiding and
showing correct columns in accord to the user selection.
:param checked: (bool) whether the DE-9IM usage checkbox is ticked.
"""
widget.otw.tableWidget.hideColumn(3 if checked else 4)
widget.otw.tableWidget.showColumn(4 if checked else 3)
widget.cb.toggled.connect(handlePredicateColumns)
widget.cb.toggled.emit(widget.cb.isChecked())
widget.otw.setHeaderDoubleClickBehaviour("replicate")
widget.otw.rowAdded.connect(self.postAddRowModeler)
layout.addWidget(widget.otw)
widget.setLayout(layout)
return widget
