TrafficLight.qml Example File

    /****************************************************************************
     **
     ** Portions Copyright (C) 2012 Research In Motion Limited.
     ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
     ** All rights reserved.
     ** Contact: Research In Motion Ltd. (http://www.rim.com/company/contact/)
     ** Contact: Nokia Corporation (qt-info@nokia.com)
     **
     ** This file is part of the examples of the BB10 Platform and is derived
     ** from a similar file that is part of the Qt Toolkit.
     **
     ** 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 Research In Motion, nor the name of Nokia
     **     Corporation and its Subsidiary(-ies), 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."
     **
     ****************************************************************************/

    import bb.cascades 1.0

    Container {
        id: root

        // The TrafficLightController instance that manages the state of this traffic light
        property variant controller

        layout: AbsoluteLayout {}

        // The frame of the traffic light.
        ImageView {
            id: trafficLightFrame
            imageSource: "asset:///images/traffic_light_frame.png"
        }

        // The red light.
        ImageView {
            id: redLight
            layoutProperties: AbsoluteLayoutProperties {
                positionX: 40
                positionY: 41
            }
            imageSource: "asset:///images/red_light.png"
            opacity: root.controller.redOn ? 1.0 : 0.0
        }

        // The yellow light.
        ImageView {
            id: yellowLight
            layoutProperties: AbsoluteLayoutProperties {
                positionX: 39
                positionY: 196
            }
            imageSource: "asset:///images/yellow_light.png"
            opacity: root.controller.yellowOn ? 1.0 : 0.0
        }

        // The green light.
        ImageView {
            id: greenLight
            layoutProperties: AbsoluteLayoutProperties {
                positionX: 38
                positionY: 351
            }
            imageSource: "asset:///images/green_light.png"
            opacity: root.controller.greenOn ? 1.0 : 0.0
        }
    }