Qt 5.9 | Qt Positioning | GeoFlickr (QML) | Slider.qml Example File

Qt 5.9.4 Reference Documentation

# Slider.qml Example File

geoflickr/flickrcommon/Slider.qml

      /****************************************************************************
      **
      ** Copyright (C) 2017 The Qt Company Ltd.
      ** Contact: https://www.qt.io/licensing/
      **
      ** This file is part of the examples of the Qt Toolkit.
      **
      ** $QT_BEGIN_LICENSE:BSD$
      ** 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 https://www.qt.io/terms-conditions. For further
      ** information use the contact form at https://www.qt.io/contact-us.
      **
      ** BSD License Usage
      ** Alternatively, 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; }
              }
          }
      }