[multimedia/haruna] src: application: add isAltKeyPressed property set through an event filter

Git commit 1dceb8c32480e193be3c336b457b545bc78cb354 by George Florea Bănuș.
Committed on 16/08/2026 at 16:25.
Pushed by georgefb into branch 'master'.

application: add isAltKeyPressed property set through an event filter

used to show tooltips even when disabled in settings

M  +67   -23   src/application.cpp
M  +9    -0    src/application.h
M  +1    -0    src/qml/Main.qml
M  +4    -1    src/qml/Settings/SettingsWindow.qml

https://invent.kde.org/multimedia/haruna/-/commit/1dceb8c32480e193be3c336b457b545bc78cb354

diff --git a/src/application.cpp b/src/application.cpp
index 5ecc7d11..1f749450 100644
--- a/src/application.cpp
+++ b/src/application.cpp
@@ -50,11 +50,29 @@ using namespace Qt::StringLiterals;
 
 bool ApplicationEventFilter::eventFilter(QObject *obj, QEvent *event)
 {
-    if (event->type() == QEvent::Leave) {
-        Q_EMIT applicationMouseLeave();
+    switch (event->type()) {
+    case QEvent::KeyPress: {
+        const auto *keyEvent = static_cast<QKeyEvent *>(event);
+        if (keyEvent->key() == Qt::Key_Alt) {
+            Q_EMIT altKeyPressed();
+        }
+        break;
+    }
+    case QEvent::KeyRelease: {
+        const auto *keyEvent = static_cast<QKeyEvent *>(event);
+        if (keyEvent->key() == Qt::Key_Alt) {
+            Q_EMIT altKeyReleased();
+        }
+        break;
     }
-    if (event->type() == QEvent::Enter) {
+    case QEvent::Leave:
+        Q_EMIT applicationMouseLeave();
+        break;
+    case QEvent::Enter:
         Q_EMIT applicationMouseEnter();
+        break;
+    default:
+        break;
     }
     return QObject::eventFilter(obj, event);
 }
@@ -71,32 +89,12 @@ Application *Application::create(QQmlEngine *, QJSEngine *)
     return instance();
 }
 
-bool Application::actionsEnabled()
-{
-    return m_actionsEnabled;
-}
-
-void Application::setActionsEnabled(bool enable)
-{
-    if (enable == actionsEnabled()) {
-        return;
-    }
-    m_actionsEnabled = enable;
-    Q_EMIT actionsEnabledChanged();
-}
-
 Application::Application()
     : QObject{nullptr}
     , m_schemes(KColorSchemeManager::instance())
     , m_systemDefaultStyle(QApplication::style()->objectName())
     , m_appEventFilter{std::make_unique<ApplicationEventFilter>()}
 {
-    // used to hide playlist when mouse leaves the application
-    // while moving between monitors while in fullscreen
-    QApplication::instance()->installEventFilter(m_appEventFilter.get());
-    QObject::connect(m_appEventFilter.get(), &ApplicationEventFilter::applicationMouseLeave, this, &Application::qmlApplicationMouseLeave);
-    QObject::connect(m_appEventFilter.get(), &ApplicationEventFilter::applicationMouseEnter, this, &Application::qmlApplicationMouseEnter);
-
     if (GeneralSettings::guiStyle() != u"System"_s) {
         QApplication::setStyle(GeneralSettings::guiStyle());
     }
@@ -113,6 +111,52 @@ Application::Application()
 
 Application::~Application() = default;
 
+bool Application::actionsEnabled()
+{
+    return m_actionsEnabled;
+}
+
+void Application::setActionsEnabled(bool enable)
+{
+    if (enable == actionsEnabled()) {
+        return;
+    }
+    m_actionsEnabled = enable;
+    Q_EMIT actionsEnabledChanged();
+}
+
+bool Application::isAltKeyPressed() const
+{
+    return m_isAltKeyPressed;
+}
+
+void Application::setIsAltKeyPressed(bool newIsAltKeyPressed)
+{
+    if (m_isAltKeyPressed == newIsAltKeyPressed) {
+        return;
+    }
+    m_isAltKeyPressed = newIsAltKeyPressed;
+    Q_EMIT isAltKeyPressedChanged();
+}
+
+void Application::setupEventFilter(QObject *object)
+{
+    // used to hide playlist when mouse leaves the application
+    // while moving between monitors while in fullscreen
+    // and detecting if alt key is pressed to show tooltips even when they are disabled in settings
+    object->installEventFilter(m_appEventFilter.get());
+
+    QObject::connect(m_appEventFilter.get(), &ApplicationEventFilter::applicationMouseLeave, this, &Application::qmlApplicationMouseLeave);
+    QObject::connect(m_appEventFilter.get(), &ApplicationEventFilter::applicationMouseEnter, this, &Application::qmlApplicationMouseEnter);
+
+    QObject::connect(m_appEventFilter.get(), &ApplicationEventFilter::altKeyPressed, this, [this]() {
+        setIsAltKeyPressed(true);
+    });
+    QObject::connect(m_appEventFilter.get(), &ApplicationEventFilter::altKeyReleased, this, [this]() {
+        setIsAltKeyPressed(false);
+    });
+}
+
 void Application::setupWorkerThread()
 {
     auto *worker = Worker::instance();
diff --git a/src/application.h b/src/application.h
index 81563049..0c78495a 100644
--- a/src/application.h
+++ b/src/application.h
@@ -30,6 +30,8 @@ class ApplicationEventFilter : public QObject
 Q_SIGNALS:
     void applicationMouseLeave();
     void applicationMouseEnter();
+    void altKeyPressed();
+    void altKeyReleased();
 
 protected:
     bool eventFilter(QObject *obj, QEvent *event) override;
@@ -51,6 +53,12 @@ public:
     bool actionsEnabled();
     void setActionsEnabled(bool enable);
 
+    Q_PROPERTY(bool isAltKeyPressed READ isAltKeyPressed WRITE setIsAltKeyPressed NOTIFY isAltKeyPressedChanged FINAL)
+    Q_SIGNAL void isAltKeyPressedChanged();
+    bool isAltKeyPressed() const;
+    void setIsAltKeyPressed(bool newIsAltKeyPressed);
+
+    Q_INVOKABLE void setupEventFilter(QObject *object);
     Q_INVOKABLE QList<QUrl> urls();
     Q_INVOKABLE QUrl url(uint index);
     Q_INVOKABLE void addUrl(const QString &value);
@@ -96,6 +104,7 @@ private:
     std::unique_ptr<ApplicationEventFilter> m_appEventFilter;
     QQmlPropertyMap *m_actions{new QQmlPropertyMap};
     bool m_actionsEnabled{true};
+    bool m_isAltKeyPressed;
 };
 
 #endif // APPLICATION_H
diff --git a/src/qml/Main.qml b/src/qml/Main.qml
index 41675e9d..a8a88e93 100644
--- a/src/qml/Main.qml
+++ b/src/qml/Main.qml
@@ -505,6 +505,7 @@ ApplicationWindow {
     }
 
     Component.onCompleted: {
+        HarunaApp.setupEventFilter(window)
         HarunaApp.activateColorScheme(GeneralSettings.colorScheme)
 
         const hasCommandLineFile = HarunaApp.url(0).toString() !== ""
diff --git a/src/qml/Settings/SettingsWindow.qml b/src/qml/Settings/SettingsWindow.qml
index b38fdc31..ce82e741 100644
--- a/src/qml/Settings/SettingsWindow.qml
+++ b/src/qml/Settings/SettingsWindow.qml
@@ -230,7 +230,10 @@ Loader {
 
         onClosing: root.active = false
 
-        Component.onCompleted: pageStack.columnView.columnWidth = Kirigami.Units.gridUnit * 15
+        Component.onCompleted: {
+            HarunaApp.setupEventFilter(settingsWindow)
+            pageStack.columnView.columnWidth = Kirigami.Units.gridUnit * 15
+        }
 
         Shortcut {
             sequence: "Esc"