Add shared QML application menu and action proxies

CMakeLists.txt

@@ -3983,6 +3983,7 @@ if(QML)
     PRIVATE
       src/qml/asyncimageprovider.cpp
       src/qml/qmlapplication.cpp
+      src/qml/qmlapplicationproxy.cpp
       src/qml/qmlautoreload.cpp
       src/qml/qmlbatteryproxy.cpp
       src/qml/qmlbeatsmodel.cpp
@@ -4572,6 +4573,9 @@ elseif(UNIX AND NOT APPLE AND NOT EMSCRIPTEN AND NOT ANDROID)
   endif()
   find_package(Qt${QT_VERSION_MAJOR} COMPONENTS DBus REQUIRED)
   target_link_libraries(mixxx-lib PUBLIC Qt${QT_VERSION_MAJOR}::DBus)
+  if(QML)
+    target_link_libraries(mixxx-qml-lib PRIVATE Qt${QT_VERSION_MAJOR}::DBus)
+  endif()
 elseif(WIN32)
   if(Qt_IS_STATIC)
     target_link_libraries(

res/qml/AboutDialog.qml

@@ -0,0 +1,9 @@
+import Mixxx 1.0 as Mixxx
+import QtQuick.Dialogs
+
+MessageDialog {
+    buttons: MessageDialog.Ok
+    informativeText: qsTr("%1\n%2").arg(Mixxx.Application.platform).arg("https://mixxx.org")
+    text: qsTr("%1 %2").arg(Mixxx.Application.applicationName).arg(Mixxx.Application.version)
+    title: qsTr("About %1").arg(Mixxx.Application.applicationName)
+}

res/qml/ApplicationMenuCommands.qml

@@ -0,0 +1,102 @@
+import Mixxx 1.0 as Mixxx
+import QtQuick
+import QtQuick.Controls
+import QtQuick.Dialogs
+import QtQuick.Window
+
+Item {
+    id: root
+
+    required property ApplicationWindow applicationWindow
+    readonly property bool fullScreen: applicationWindow.visibility === Window.FullScreen
+    property int pendingDeck: 1
+
+    signal showDeveloperToolsRequested
+
+    function loadTrackToDeck(deck) {
+        pendingDeck = deck;
+        const playControl = [deck1PlayControl, deck2PlayControl, deck3PlayControl, deck4PlayControl][deck - 1];
+        if (playControl && playControl.value > 0) {
+            confirmLoadDialog.text = qsTr("Deck %1 is currently playing a track.\nAre you sure you want to load a new track?").arg(deck);
+            confirmLoadDialog.open();
+        } else {
+            openTrackFileDialog();
+        }
+    }
+    function openTrackFileDialog() {
+        trackFileDialog.title = qsTr("Load track to Deck %1").arg(pendingDeck);
+        trackFileDialog.currentFolder = Mixxx.PlayerManager.initialTrackDirectoryUrl;
+        Qt.callLater(function() {
+            trackFileDialog.open();
+        });
+    }
+    function toggleFullScreen() {
+        applicationWindow.visibility = applicationWindow.visibility === Window.FullScreen ? Window.Windowed : Window.FullScreen;
+    }
+    function showAbout() {
+        aboutDialog.open();
+    }
+    function showKeywheel() {
+        keywheelDialog.open();
+    }
+
+    FileDialog {
+        id: trackFileDialog
+
+        fileMode: FileDialog.OpenFile
+        nameFilters: Mixxx.PlayerManager.supportedAudioFileNameFilters
+
+        onAccepted: Mixxx.PlayerManager.loadLocationUrlToDeck(selectedFile, root.pendingDeck)
+    }
+    MessageDialog {
+        id: confirmLoadDialog
+
+        buttons: MessageDialog.Yes | MessageDialog.No
+        title: Mixxx.Application.applicationName
+
+        onAccepted: root.openTrackFileDialog()
+    }
+    AboutDialog {
+        id: aboutDialog
+    }
+    Dialog {
+        id: keywheelDialog
+
+        height: Math.min(620, root.applicationWindow.height - 80)
+        modal: false
+        standardButtons: Dialog.Close
+        title: qsTr("Keywheel")
+        width: height
+        x: Math.round((root.applicationWindow.width - width) / 2)
+        y: Math.round((root.applicationWindow.height - height) / 2)
+
+        contentItem: Image {
+            fillMode: Image.PreserveAspectFit
+            source: "../images/keywheel/keywheel.svg"
+        }
+    }
+    Mixxx.ControlProxy {
+        id: deck1PlayControl
+
+        group: "[Channel1]"
+        key: "play"
+    }
+    Mixxx.ControlProxy {
+        id: deck2PlayControl
+
+        group: "[Channel2]"
+        key: "play"
+    }
+    Mixxx.ControlProxy {
+        id: deck3PlayControl
+
+        group: "[Channel3]"
+        key: "play"
+    }
+    Mixxx.ControlProxy {
+        id: deck4PlayControl
+
+        group: "[Channel4]"
+        key: "play"
+    }
+}

res/qml/LibraryScanSummaryDialog.qml

@@ -0,0 +1,20 @@
+import Mixxx 1.0 as Mixxx
+import QtQuick
+import QtQuick.Dialogs
+
+MessageDialog {
+    id: root
+
+    buttons: MessageDialog.Ok
+
+    Connections {
+        function onLibraryScanSummaryAvailable(title, text, informativeText) {
+            root.title = title;
+            root.text = text;
+            root.informativeText = informativeText;
+            root.open();
+        }
+
+        target: Mixxx.Library
+    }
+}