- Qt 5.15
- Qt Quick Demo - Clocks
- Qt 5.15.16 Reference Documentation

# Qt Quick Demo - Clocks

     /****************************************************************************
     **
     ** 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 : clock
         width: {
             if (ListView.view && ListView.view.width >= 200)
                 return ListView.view.width / Math.floor(ListView.view.width / 200.0);
             else
                 return 200;
         }

         height: {
             if (ListView.view && ListView.view.height >= 240)
                 return ListView.view.height;
             else
                 return 240;
         }

         property alias city: cityLabel.text
         property int hours
         property int minutes
         property int seconds
         property real shift
         property bool night: false
         property bool internationalTime: true //Unset for local time

         function timeChanged() {
             var date = new Date;
             hours = internationalTime ? date.getUTCHours() + Math.floor(clock.shift) : date.getHours()
             night = ( hours < 7 || hours > 19 )
             minutes = internationalTime ? date.getUTCMinutes() + ((clock.shift % 1) * 60) : date.getMinutes()
             seconds = date.getUTCSeconds();
         }

         Timer {
             interval: 100; running: true; repeat: true;
             onTriggered: clock.timeChanged()
         }

         Item {
             anchors.centerIn: parent
             width: 200; height: 240

             Image { id: background; source: "clock.png"; visible: clock.night == false }
             Image { source: "clock-night.png"; visible: clock.night == true }

             Image {
                 x: 92.5; y: 27
                 source: "hour.png"
                 transform: Rotation {
                     id: hourRotation
                     origin.x: 7.5; origin.y: 73;
                     angle: (clock.hours * 30) + (clock.minutes * 0.5)
                     Behavior on angle {
                         SpringAnimation { spring: 2; damping: 0.2; modulus: 360 }
                     }
                 }
             }

             Image {
                 x: 93.5; y: 17
                 source: "minute.png"
                 transform: Rotation {
                     id: minuteRotation
                     origin.x: 6.5; origin.y: 83;
                     angle: clock.minutes * 6
                     Behavior on angle {
                         SpringAnimation { spring: 2; damping: 0.2; modulus: 360 }
                     }
                 }
             }

             Image {
                 x: 97.5; y: 20
                 source: "second.png"
                 transform: Rotation {
                     id: secondRotation
                     origin.x: 2.5; origin.y: 80;
                     angle: clock.seconds * 6
                     Behavior on angle {
                         SpringAnimation { spring: 2; damping: 0.2; modulus: 360 }
                     }
                 }
             }

             Image {
                 anchors.centerIn: background; source: "center.png"
             }

             Text {
                 id: cityLabel
                 y: 210; anchors.horizontalCenter: parent.horizontalCenter
                 color: "white"
                 font.family: "Helvetica"
                 font.bold: true; font.pixelSize: 16
                 style: Text.Raised; styleColor: "black"
             }
         }
     }