Qt 5.8 | Qt Sensors | Qt Sensors - Explorer QML Example | sensor_explorer.qml Example File

Qt 5.8.0 Reference Documentation

# sensor_explorer.qml Example File

sensor_explorer/sensor_explorer.qml

      /****************************************************************************
      **
      ** Copyright (C) 2015 The Qt Company Ltd.
      ** Contact: http://www.qt.io/licensing/
      **
      ** This file is part of the QtSensors module of the Qt Toolkit.
      **
      ** $QT_BEGIN_LICENSE:BSD$
      ** 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.
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      **     contributors may be used to endorse or promote products derived
      **     from this software without specific prior written permission.
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      import QtQuick 2.1
      import QtQuick.Window 2.1
      import QtQuick.Controls 1.0

      import Explorer 1.0

      Window {
          id: window
          width: 320
          height: 480
          minimumWidth: 320
          minimumHeight: 480

          SensorExplorer {
              id: explorer
          }

          Column {
              anchors.fill: parent
              anchors.margins: 8
              spacing: 8

              GroupBox {
                  title: qsTr("Available Sensors")
                  width: parent.width
                  height: window.height * 0.4

                  TableView {
                      id: sensorList
                      anchors.fill: parent
                      model: explorer.availableSensors

                      TableViewColumn { role: "id"; title: qsTr("ID"); width: sensorList.width * 0.7 }
                      TableViewColumn { role: "start"; title: qsTr("Running"); width: sensorList.width * 0.3 - 5 }

                      onClicked: {
                          explorer.selectedSensorItem = explorer.availableSensors[row]
                          propertyList.model = explorer.selectedSensorItem.properties
                          button.update()
                      }
                  }

                  Button {
                      id: button
                      anchors.margins: 4
                      anchors.horizontalCenter: parent.horizontalCenter
                      anchors.top: sensorList.bottom
                      text: qsTr("Start")
                      enabled: explorer.selectedSensorItem !== null

                      function update() {
                          text = (explorer.selectedSensorItem !== null ?
                                      (explorer.selectedSensorItem.start === true ?
                                           qsTr("Stop") : qsTr("Start")) : qsTr("Start"))
                      }

                      onClicked: {
                          if (explorer.selectedSensorItem !== null) {
                              if (text === "Start") {
                                  explorer.selectedSensorItem.start = true;
                                  text = "Stop";
                              }
                              else {
                                  explorer.selectedSensorItem.start = false;
                                  text = "Start";
                              }
                          }
                      }
                  }

              }

              GroupBox {
                  title: qsTr("Properties")
                  width: parent.width
                  height: window.height * 0.55

                  enabled: explorer.selectedSensorItem != null

                  TableView {
                      id: propertyList
                      property PropertyInfo selectedItem: null

                      anchors.fill: parent
                      TableViewColumn { role: "name"; title: qsTr("Name"); width: propertyList.width * 0.5 }
                      TableViewColumn { role: "value"; title: qsTr("Value"); width: propertyList.width * 0.5 - 5 }

                      onClicked: {
                          selectedItem = model[row]
                      }

                      itemDelegate: {
                          if (selectedItem && selectedItem.isWriteable)
                              return editableDelegate;
                          return readOnlyDelegate;
                      }

                      Component {
                          id: readOnlyDelegate
                          Item {
                              Text {
                                  width: parent.width
                                  anchors.margins: 4
                                  anchors.left: parent.left
                                  anchors.verticalCenter: parent.verticalCenter
                                  elide: styleData.elideMode
                                  text: styleData.value
                                  color: propertyList.model[styleData.row].isWriteable ?
                                             styleData.textColor : Qt.lighter(styleData.textColor)
                              }
                          }
                      }

                      Component {
                          id: editableDelegate
                          Item {
                              Text {
                                  width: parent.width
                                  anchors.margins: 4
                                  anchors.left: parent.left
                                  anchors.verticalCenter: parent.verticalCenter
                                  elide: styleData.elideMode
                                  text: styleData.value
                                  color: styleData.textColor
                                  visible: !styleData.selected || styleData.column === 0
                              }
                              Loader { // Initialize text editor lazily to improve performance
                                  id: loaderEditor
                                  anchors.margins: 4
                                  anchors.left: parent.left
                                  anchors.verticalCenter: parent.verticalCenter
                                  Connections {
                                      target: loaderEditor.item
                                      onAccepted: {
                                          explorer.selectedSensorItem.changePropertyValue(propertyList.selectedItem, loaderEditor.item.text);
                                      }
                                  }

                                  // Load the editor for selected 'Value' cell
                                  sourceComponent: (styleData.selected && styleData.column === 1) ? editor : null

                                  Component {
                                      id: editor
                                      TextInput {
                                          id: textinput
                                          color: styleData.textColor
                                          text: styleData.value
                                          MouseArea {
                                              id: mouseArea
                                              anchors.fill: parent
                                              hoverEnabled: true
                                              onClicked: textinput.forceActiveFocus()
                                          }
                                      }
                                  }
                              }
                          }
                      }
                  }
              }
          }
      }