Qt with Cascades UI Examples Documentation

TrafficLight.qml Example File

statemachine/trafficlight/assets/TrafficLight.qml
    /****************************************************************************
     **
     ** Portions Copyright (C) 2012 Research In Motion Limited.
     ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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     ** Contact: Research In Motion Ltd. (http://www.rim.com/company/contact/)
     ** Contact: Nokia Corporation (qt-info@nokia.com)
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     ** 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.
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    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
        }
    }