- Qt 5.5
- Qt Quick
- Qt Quick Examples - Accessibility
- Slider.qml Example File
- Qt 5.5.1 Reference Documentation

# Slider.qml Example File

quick-accessibility/content/Slider.qml

    /****************************************************************************
    **
    ** Copyright (C) 2015 The Qt Company Ltd.
    ** Contact: http://www.qt.io/licensing/
    **
    ** This file is part of the Qt Quick module of the Qt Toolkit.
    **
    ** $QT_BEGIN_LICENSE:LGPL21$
    ** Commercial License Usage
    ** Licensees holding valid commercial Qt licenses may use this file in
    ** accordance with the commercial license agreement provided with the
    ** Software or, alternatively, in accordance with the terms contained in
    ** a written agreement between you and The Qt Company. For licensing terms
    ** and conditions see http://www.qt.io/terms-conditions. For further
    ** information use the contact form at http://www.qt.io/contact-us.
    **
    ** GNU Lesser General Public License Usage
    ** Alternatively, this file may be used under the terms of the GNU Lesser
    ** General Public License version 2.1 or version 3 as published by the Free
    ** Software Foundation and appearing in the file LICENSE.LGPLv21 and
    ** LICENSE.LGPLv3 included in the packaging of this file. Please review the
    ** following information to ensure the GNU Lesser General Public License
    ** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
    ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
    **
    ** As a special exception, The Qt Company gives you certain additional
    ** rights. These rights are described in The Qt Company LGPL Exception
    ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
    **
    ** $QT_END_LICENSE$
    **
    ****************************************************************************/

    import QtQuick 2.0

    // Minimal slider implementation
    Rectangle {
        id: slider

        property alias text: buttonText.text
        Accessible.role: Accessible.Slider

        property int value: 5         // required
        property int minimumValue: 0  // optional (default INT_MIN)
        property int maximumValue: 20 // optional (default INT_MAX)
        property int stepSize: 1      // optional (default 1)

        width: 100
        height: 30
        border.color: "black"
        border.width: 1

        Rectangle {
            id: indicator
            x: 1
            y: 1
            height: parent.height - 2
            width: ((parent.width - 2) / maximumValue) * value
            color: "lightgrey"
            Behavior on width {
                NumberAnimation { duration: 50 }
            }
        }

        Text {
            id: buttonText
            text: parent.value
            anchors.centerIn: parent
            font.pixelSize: parent.height * .5
        }

        MouseArea {
            anchors.fill: parent
            onClicked: {
                var pos = mouse.x / slider.width * (maximumValue - minimumValue) + minimumValue
                slider.value = pos
            }
        }

        Keys.onLeftPressed: value > minimumValue ? value = value - stepSize : minimumValue
        Keys.onRightPressed: value < maximumValue ? value = value + stepSize : maximumValue
    }