SceneMulti.qml Example File

  /****************************************************************************
  **
  ** Copyright (C) 2016 The Qt Company Ltd.
  ** Contact: https://www.qt.io/licensing/
  **
  ** This file is part of the Qt Mobility Components.
  **
  ** $QT_BEGIN_LICENSE:BSD$
  ** 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

  Scene {
      id: root

      property real itemWidth: (width / 3) - 40
      property real itemTopMargin: 50

      QtObject {
          id: contentProxy
          function initialize() {
              video1.initialize()
              video2.initialize()
          }
      }

      Component {
          id: startStopComponent

          Rectangle {
              id: root
              color: "transparent"

              function content() {
                  return root.parent
              }

              Text {
                  anchors {
                      horizontalCenter: parent.horizontalCenter
                      bottom: parent.bottom
                      margins: 20
                  }
                  text: content() ? content().started ? "Tap to stop" : "Tap to start" : ""
                  color: "#e0e0e0"
              }

              MouseArea {
                  anchors.fill: parent
                  onClicked: {
                      if (content().started)
                          content().stop()
                      else
                          content().start()
                  }
              }
          }
      }

      Content {
          id: video1
          anchors {
              left: parent.left
              leftMargin: 10
              top: parent.top
              topMargin: root.itemTopMargin
          }
          autoStart: false
          contentType: "video"
          showBorder: true
          showFrameRate: started
          source: parent.source1
          width: itemWidth
          volume: parent.volume

          Loader {
              id: video1StartStopLoader
              onLoaded: {
                  item.parent = video1
                  item.anchors.fill = video1
              }
          }

          onInitialized: video1StartStopLoader.sourceComponent = startStopComponent
      }

      Rectangle {
          id: cameraHolder
          anchors {
              horizontalCenter: parent.horizontalCenter
              top: parent.top
              topMargin: root.itemTopMargin
          }
          border.width: 1
          border.color: "white"
          color: "transparent"
          width: itemWidth
          height: width
          property bool started: false

          Loader {
              id: cameraLoader
              onLoaded: {
                  item.parent = cameraHolder
                  item.centerIn = cameraHolder
                  item.contentType = "camera"
                  item.showFrameRate = true
                  item.width = itemWidth
                  item.z = 1.0
                  cameraErrorConnection.target = item
                  item.initialize()
              }
          }

          Loader {
              id: cameraStartStopLoader
              sourceComponent: startStopComponent
              onLoaded: {
                  item.parent = cameraHolder
                  item.anchors.fill = cameraHolder
                  item.z = 2.0
              }
          }

          Connections {
              id: cameraErrorConnection
              onError: {
                  console.log("[qmlvideo] SceneMulti.camera.onError")
                  cameraHolder.stop()
              }
          }

          function start() {
              cameraLoader.source = "Content.qml"
              cameraHolder.started = true
          }

          function stop() {
              cameraLoader.source = ""
              cameraHolder.started = false
          }
      }

      Content {
          id: video2
          anchors {
              right: parent.right
              rightMargin: 10
              top: parent.top
              topMargin: root.itemTopMargin
          }
          autoStart: false
          contentType: "video"
          showBorder: true
          showFrameRate: started
          source: parent.source2
          width: itemWidth
          volume: parent.volume

          Loader {
              id: video2StartStopLoader
              onLoaded: {
                  item.parent = video2
                  item.anchors.fill = video2
              }
          }

          onInitialized: video2StartStopLoader.sourceComponent = startStopComponent
      }

      Component.onCompleted: root.content = contentProxy
  }