/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the Qt Mobility Components.
**
** $QT_BEGIN_LICENSE:LGPL21$
** 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

Rectangle {
    id: root
    color: "transparent"
    radius: 5
    property alias value: grip.value
    property color gripColor: "transparent"
    property real gripSize: 20
    property real gripTolerance: 3.0
    property real increment: 0.1
    property bool enabled: true
    property string imageSource: "qrc:/images/Triangle_Top.png"

    Rectangle {
        id: grip
        property real value: 0.5
        x: (value * parent.width) - width/2
        anchors.verticalCenter: parent.verticalCenter
        width: root.gripTolerance * root.gripSize
        height: width
        radius: width/2
        color: "transparent"

        Image {
            id: sliderhandleimage
            source: imageSource
            anchors.centerIn: parent
        }

        MouseArea {
            id: mouseArea
            enabled: root.enabled
            anchors.fill:  parent
            drag {
                target: grip
                axis: Drag.XAxis
                minimumX: -parent.width/2
                maximumX: root.width - parent.width/2
            }
            onPositionChanged:  {
                if (drag.active)
                    updatePosition()
            }
            onReleased: {
                updatePosition()
            }
            function updatePosition() {
                value = (grip.x + grip.width/2) / grip.parent.width
            }
        }
    }
}