moonlight-qt/app/gui/main.qml

import QtQuick 2.9
import QtQuick.Controls 2.2
import QtQuick.Layouts 1.3

import QtQuick.Controls.Material 2.1

ApplicationWindow {
    id: window
    visible: true
    width: 1280
    height: 600

    Material.theme: Material.Dark
    Material.accent: Material.Purple

    StackView {
        id: stackView
        initialItem: "PcView.qml"
        anchors.fill: parent
    }

    function navigateTo(url, objectName)
    {
        var existingItem = stackView.find(function(item, index) {
            return item.objectName === objectName
        })

        if (existingItem !== null) {
            // Pop to the existing item
            stackView.pop(existingItem)
        }
        else {
            // Create a new item
            stackView.push(url)
        }
    }

    header: ToolBar {
        id: toolBar

        RowLayout {
            spacing: 20
            anchors.fill: parent

            ToolButton {
                // Only make the button visible if the user has navigated somewhere.
                visible: stackView.depth > 1

                icon.source: "qrc:/res/arrow_left.svg"
                onClicked: stackView.pop()

                Menu {
                    id: backButton
                    x: parent.width - width
                    transformOrigin: Menu.TopRight
                }
            }

            Label {
                id: titleLabel
                text: stackView.currentItem.objectName
                font.pointSize: 15
                elide: Label.ElideRight
                horizontalAlignment: Qt.AlignHCenter
                verticalAlignment: Qt.AlignVCenter
                Layout.fillWidth: true
            }

            ToolButton {
                icon.source: "qrc:/res/question_mark.svg"

                // TODO need to make sure browser is brought to foreground.
                onClicked: Qt.openUrlExternally("https://github.com/moonlight-stream/moonlight-docs/wiki/Setup-Guide");

                Menu {
                    id: helpButton
                    x: parent.width
                    transformOrigin: Menu.TopRight
                }
            }

            ToolButton {
                icon.source: "qrc:/res/ic_videogame_asset_white_48px.svg"
                onClicked: navigateTo("qrc:/gui/GamepadMapper.qml", "Gamepad Mapping")

                Menu {
                    id: gamepadMappingMenu
                    x: parent.width
                    transformOrigin: Menu.TopRight
                }
            }

            ToolButton {
                icon.source: "qrc:/res/settings.svg"
                onClicked: navigateTo("qrc:/gui/SettingsView.qml", "Settings")

                Menu {
                    id: optionsMenu
                    x: parent.width
                    transformOrigin: Menu.TopRight
                }
            }
        }
    }
}