QML Documentation Example | Test 6.2.11
Description: Example for documenting QML types.

# QML Documentation Example

    // Copyright (C) 2016 The Qt Company Ltd.
    // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause

    import QtQuick 1.0

    /*!
        \qmltype TabWidget
        \inqmlmodule UIComponents
        \brief A widget that places its children as tabs.

        A TabWidget places its children as tabs in a view. Selecting
        a tab involves selecting the tab at the top.

        The TabWidget component is part of the \l {UI Components} module.

        This documentation is part of the \l{componentset}{UIComponents} example.

        \section1 Adding Tabs

        To add a tab, declare the tab as a child of the TabWidget.

        \code
        TabWidget {
            id: tabwidget

            Rectangle {
                id: tab1
                color: "red"
                //... omitted
            }
            Rectangle {
                id: tab2
                color: "blue"
                //... omitted
            }

        }
        \endcode

    */
    Item {
        id: tabWidget

        /*!
        \internal

        Setting the default property to stack.children means any child items
        of the TabWidget are actually added to the 'stack' item's children.

        See the \l{"Property Binding in QML"}
        documentation for details on default properties.

        This is an implementation detail, not meant for public knowledge. Putting
        the \internal command at the beginning will cause QDoc to not publish this
        documentation in the public API page.

        Normally, a property alias needs to have a
        "\qmlproperty <type> <propertyname>" to assign the alias a type.

        */
        default property alias content: stack.children

        /*!
            The currently active tab in the TabWidget.
        */
        property int current: 0

        /*!
            A sample \c{read-only} property.
            A contrived property to demonstrate QDoc's ability to detect
            read-only properties.

            The signature is:
            \code
            readonly property int sampleReadOnlyProperty: 0
            \endcode

            Note that the property must be initialized to a value.

        */
        readonly property int sampleReadOnlyProperty: 0

        /*!
        \internal

        This handler is an implementation
        detail. The \c{\internal} command will prevent QDoc from publishing this
        documentation on the public API.
        */
        onCurrentChanged: setOpacities()
        Component.onCompleted: setOpacities()

        /*!
        \internal

        An internal function to set the opacity.
        The \internal command will prevent QDoc from publishing this
        documentation on the public API.
        */
        function setOpacities() {
            for (var i = 0; i < stack.children.length; ++i) {
                stack.children[i].opacity = (i == current ? 1 : 0)
            }
        }

        Row {
            id: header

            Repeater {
                model: stack.children.length
                delegate: Rectangle {
                    width: tabWidget.width / stack.children.length; height: 36

                    Rectangle {
                        width: parent.width; height: 1
                        anchors { bottom: parent.bottom; bottomMargin: 1 }
                        color: "#acb2c2"
                    }
                    BorderImage {
                        anchors { fill: parent; leftMargin: 2; topMargin: 5; rightMargin: 1 }
                        border { left: 7; right: 7 }
                        source: "tab.png"
                        visible: tabWidget.current == index
                    }
                    Text {
                        horizontalAlignment: Qt.AlignHCenter; verticalAlignment: Qt.AlignVCenter
                        anchors.fill: parent
                        text: stack.children[index].title
                        elide: Text.ElideRight
                        font.bold: tabWidget.current == index
                    }
                    MouseArea {
                        anchors.fill: parent
                        onClicked: tabWidget.current = index
                    }
                }
            }
        }

        Item {
            id: stack
            width: tabWidget.width
            anchors.top: header.bottom; anchors.bottom: tabWidget.bottom
        }
    }