TrafficLight.qml Example File

 /****************************************************************************
 **
 ** Copyright (C) 2016 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the QtScxml module 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 2.5
 import QtQuick.Window 2.2
 import TrafficLightStateMachine 1.0

 Window {
     id: root
     visible: true
     width: 100
     height: 350

     TrafficLightStateMachine {
         id: stateMachine
         running: true
     }

     Item {
         id: lights
         width: parent.width
         height: 300

         Light {
             anchors.top: parent.top
             anchors.horizontalCenter: parent.horizontalCenter
             color: "red"
             visible: stateMachine.red || stateMachine.redGoingGreen
         }

         Light {
             anchors.centerIn: parent
             color: "yellow"
             visible: stateMachine.yellow || stateMachine.blinking
         }

         Light {
             anchors.bottom: parent.bottom
             anchors.horizontalCenter: parent.horizontalCenter
             color: "green"
             visible: stateMachine.green
         }
     }

     Rectangle {
         anchors.top: lights.bottom
         anchors.bottom: parent.bottom
         width: parent.width
         border.color: "black"

         Text {
             anchors.fill: parent
             text: stateMachine.working ? "Pause" : "Unpause"
             horizontalAlignment: Text.AlignHCenter
             verticalAlignment: Text.AlignVCenter
         }

         MouseArea {
             anchors.fill: parent
             onClicked: stateMachine.submitEvent(stateMachine.working ? "smash" : "repair");
         }
     }
 }