Cura/plugins/UM3NetworkPrinting/MonitorItem.qml

import QtQuick 2.2


import UM 1.3 as UM
import Cura 1.0 as Cura

Component
{
    Image
    {
        id: cameraImage
        width: Math.min(sourceSize.width === 0 ? 800 * screenScaleFactor : sourceSize.width, maximumWidth)
        height: Math.floor((sourceSize.height === 0 ? 600 * screenScaleFactor : sourceSize.height) * width / sourceSize.width)
        anchors.horizontalCenter: parent.horizontalCenter
        anchors.verticalCenter: parent.verticalCenter
        z: 1
        onVisibleChanged:
        {
            if(visible)
            {
                if(OutputDevice.activePrinter != null && OutputDevice.activePrinter.camera != null)
                {
                    OutputDevice.activePrinter.camera.start()
                }
            } else
            {
                if(OutputDevice.activePrinter != null && OutputDevice.activePrinter.camera != null)
                {
                    OutputDevice.activePrinter.camera.stop()
                }
            }
        }
        source:
        {
            if(OutputDevice.activePrinter != null && OutputDevice.activePrinter.camera != null && OutputDevice.activePrinter.camera.latestImage)
            {
                return OutputDevice.activePrinter.camera.latestImage;
            }
            return "";
        }
    }
}