CODEWITHSUNDEEP
pythonpyqt5
endy aris
endy aris

Reputation: 13

Speedup PyQt def?

My PyQt app is slow. What have i do to speedup this def:

def paint(self):
    for i in range(self.tableWidget.columnCount()):
        c = []
        for j in range(self.tableWidget.rowCount()):
            c.append(self.tableWidget.item(j, i).text())

        if "X" not in c:
            for j in range(self.tableWidget.rowCount()):
                self.tableWidget.item(j, i).setBackground(
                    QtGui.QColor(125, 125, 125))
        else:
            for j in range(self.tableWidget.rowCount()):
                self.tableWidget.item(j, i).setBackground(
                    QtGui.QColor(255, 255, 251))

Upvotes: 0

Views: 241

Answers (1)

eyllanesc
eyllanesc

Reputation: 243937

One possible solution is to implement that logic through a delegate:

class Delegate(QtWidgets.QStyledItemDelegate):
    def initStyleOption(self, option, index):
        super().initStyleOption(option, index)
        column = index.column()
        model = index.model()
        found = False
        for row in range(model.columnCount()):
            if model.index(row, column).data() == "X":
                found = True
                break
        option.backgroundBrush = (
            QtGui.QColor(255, 255, 251) if found else QtGui.QColor(125, 125, 125)
        )

delegate = Delegate(self.tableWidget)
self.tableWidget.setItemDelegate(delegate)

Upvotes: 2

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