- Qt 5.5
- Qt Quick
- Qt Quick Demo - Calqlatr
- Button.qml Example File
- Qt 5.5.1 Reference Documentation

# Button.qml Example File

demos/calqlatr/content/Button.qml

    /****************************************************************************
    **
    ** Copyright (C) 2015 The Qt Company Ltd.
    ** Contact: http://www.qt.io/licensing/
    **
    ** This file is part of the examples of the Qt Toolkit.
    **
    ** $QT_BEGIN_LICENSE:BSD$
    ** You may use this file under the terms of the BSD license as follows:
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    **     from this software without specific prior written permission.
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    import QtQuick 2.0

    Item {
        id: button
        property alias text: textItem.text
        property color color: "#eceeea"

        property bool operator: false
        property bool dimmable: false
        property bool dimmed: false

        width: 30
        height: 50

        Text {
            id: textItem
            font.pixelSize: 48
            wrapMode: Text.WordWrap
            lineHeight: 0.75
            color: (dimmable && dimmed) ? Qt.darker(button.color) : button.color
            Behavior on color { ColorAnimation { duration: 120; easing.type: Easing.OutElastic} }
            states: [
                State {
                    name: "pressed"
                    when: mouse.pressed && !dimmed
                    PropertyChanges {
                        target: textItem
                        color: Qt.lighter(button.color)
                    }
                }
            ]
        }

        MouseArea {
            id: mouse
            anchors.fill: parent
            anchors.margins: -5
            onClicked: {
                if (operator)
                    window.operatorPressed(parent.text)
                else
                    window.digitPressed(parent.text)
            }
        }

        function updateDimmed() {
            dimmed = window.isButtonDisabled(button.text)
        }

        Component.onCompleted: {
            numPad.buttonPressed.connect(updateDimmed)
            updateDimmed()
        }
    }