Slider.qml Example File

 /****************************************************************************
 **
 ** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
 ** Contact: http://www.qt-project.org/legal
 **
 ** This file is part of the QtDeclarative module of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:LGPL$
 ** 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 Digia.  For licensing terms and
 ** conditions see http://qt.digia.com/licensing.  For further information
 ** use the contact form at http://qt.digia.com/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 as published by the Free Software
 ** Foundation and appearing in the file LICENSE.LGPL included in the
 ** packaging of this file.  Please review the following information to
 ** ensure the GNU Lesser General Public License version 2.1 requirements
 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
 **
 ** In addition, as a special exception, Digia gives you certain additional
 ** rights.  These rights are described in the Digia Qt LGPL Exception
 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
 **
 ** GNU General Public License Usage
 ** Alternatively, this file may be used under the terms of the GNU
 ** General Public License version 3.0 as published by the Free Software
 ** Foundation and appearing in the file LICENSE.GPL included in the
 ** packaging of this file.  Please review the following information to
 ** ensure the GNU General Public License version 3.0 requirements will be
 ** met: http://www.gnu.org/copyleft/gpl.html.
 **
 **
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/

 import QtQuick 1.0

 Item {
     id: slider; width: 400; height: 16

     // value is read/write.
     property real value: 1
     onValueChanged: updatePos();
     property real maximum: 1
     property real minimum: 1
     property int xMax: width - handle.width - 4
     onXMaxChanged: updatePos();
     onMinimumChanged: updatePos();

     function updatePos() {
         if (maximum > minimum) {
             var pos = 2 + (value - minimum) * slider.xMax / (maximum - minimum);
             pos = Math.min(pos, width - handle.width - 2);
             pos = Math.max(pos, 2);
             handle.x = pos;
         } else {
             handle.x = 2;
         }
     }

     Rectangle {
         anchors.fill: parent
         border.color: "white"; border.width: 0; radius: 8
         gradient: Gradient {
             GradientStop { position: 0.0; color: "#66343434" }
             GradientStop { position: 1.0; color: "#66000000" }
         }
     }

     Rectangle {
         id: handle; smooth: true
         y: 2; width: 30; height: slider.height-4; radius: 6
         gradient: Gradient {
             GradientStop { position: 0.0; color: "lightgray" }
             GradientStop { position: 1.0; color: "gray" }
         }

         MouseArea {
             id: mouse
             anchors.fill: parent; drag.target: parent
             drag.axis: Drag.XAxis; drag.minimumX: 2; drag.maximumX: slider.xMax+2
             onPositionChanged: { value = (maximum - minimum) * (handle.x-2) / slider.xMax + minimum; }
         }
     }
 }