Slider.qml Example File

  /****************************************************************************
  **
  ** 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:
  **
  ** "Redistribution and use in source and binary forms, with or without
  ** modification, are permitted provided that the following conditions are
  ** met:
  **   * Redistributions of source code must retain the above copyright
  **     notice, this list of conditions and the following disclaimer.
  **   * Redistributions in binary form must reproduce the above copyright
  **     notice, this list of conditions and the following disclaimer in
  **     the documentation and/or other materials provided with the
  **     distribution.
  **   * Neither the name of The Qt Company Ltd nor the names of its
  **     contributors may be used to endorse or promote products derived
  **     from this software without specific prior written permission.
  **
  **
  ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
  **
  ** $QT_END_LICENSE$
  **
  ****************************************************************************/

  import QtQuick 2.0

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

      // value is read/write.
      property real value
      onValueChanged: { handle.x = 2 + (value - minimum) * slider.xMax / (maximum - minimum); }
      property real maximum: 1
      property real minimum: 1
      property int xMax: slider.width - handle.width - 4

      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
          x: slider.width / 2 - handle.width / 2; 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 {
              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; }
          }
      }
  }