- Qt 5.5
- Qt Sensors
- Qt Sensors - Explorer QML Example
- sensor_explorer.qml Example File
- Qt 5.5.1 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.
    **   * 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."
    **
    ** $QT_END_LICENSE$
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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()
                                        }
                                    }
                                }
                            }
                        }
                    }
                }
            }
        }
    }