如何在 QML 旋转框中使用浮点数 [英] How to use float in a QML spinbox

问题描述

我使用 QML

I use a QML Spinbox but I have trouble to use floats in it. If I write something like value: 5.0 , it will be displayed as 5 , so as an int instead of a float.

Do you have any idea of how to proceed ?

Thanks a lot and have a good day !

解决方案

You can create a Spinbox with custom texts

DoubleSpinBox.qml

import QtQuick 2.0

import QtQuick.Controls 2.1

Item {
    property int decimals: 2
    property real realValue: 0.0
    property real realFrom: 0.0
    property real realTo: 100.0
    property real realStepSize: 1.0

    SpinBox{
        property real factor: Math.pow(10, decimals)
        id: spinbox
        stepSize: realStepSize*factor
        value: realValue*factor
        to : realTo*factor
        from : realFrom*factor
        validator: DoubleValidator {
            bottom: Math.min(spinbox.from, spinbox.to)*spinbox.factor
            top:  Math.max(spinbox.from, spinbox.to)*spinbox.factor
        }

        textFromValue: function(value, locale) {
            return parseFloat(value*1.0/factor).toFixed(decimals);
        }

    }
}

Example:

DoubleSpinBox{
    realValue: 5.0
    realStepSize: 0.01
}

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