Qt Quick Demo - Calqlatr

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import QtQuick Grid { columns: 3 columnSpacing: 32 rowSpacing: 16 function updateDimmed(){ for (let i = 0; i < children.length; i++){ children[i].dimmed = window.isButtonDisabled(children[i].text) } } component DigitButton: CalculatorButton { onPressed: function() { window.digitPressed(text) updateDimmed() } } component OperatorButton: CalculatorButton { onPressed: function() { window.operatorPressed(text) updateDimmed() } textColor: "#6da43d" dimmable: true } DigitButton { text: "7" } DigitButton { text: "8" } DigitButton { text: "9" } DigitButton { text: "4" } DigitButton { text: "5" } DigitButton { text: "6" } DigitButton { text: "1" } DigitButton { text: "2" } DigitButton { text: "3" } DigitButton { text: "0" } DigitButton { text: "." dimmable: true } DigitButton { text: " " } OperatorButton { text: "±" } OperatorButton { text: "−" } OperatorButton { text: "+" } OperatorButton { text: "√" } OperatorButton { text: "÷" } OperatorButton { text: "×" } OperatorButton { text: "C" } OperatorButton { text: " " } OperatorButton { text: "=" } Component.onCompleted: updateDimmed() }