fix: Multi screen adaptation

src/backgroundhelper.cpp

@@ -31,6 +31,8 @@ BackgroundHelper::BackgroundHelper(QObject *parent)
     , m_statusBarHeight(25 / qApp->devicePixelRatio())
     , m_type(0)
 {
+    onPrimaryScreenChanged();
+    connect(qApp, &QApplication::primaryScreenChanged, this, &BackgroundHelper::onPrimaryScreenChanged);
 }
 
 void BackgroundHelper::setColor(QColor c)
@@ -80,6 +82,14 @@ void BackgroundHelper::setBackgound(const QString &fileName)
     QPixmapCache::clear();
 }
 
+void BackgroundHelper::onPrimaryScreenChanged()
+{
+    disconnect(qApp->primaryScreen());
+
+    connect(qApp->primaryScreen(), &QScreen::geometryChanged, this, &BackgroundHelper::onChanged);
+    connect(qApp->primaryScreen(), &QScreen::virtualGeometryChanged, this, &BackgroundHelper::onChanged);
+}
+
 void BackgroundHelper::onChanged()
 {
     switch (m_type) {

src/backgroundhelper.h

@@ -34,6 +34,7 @@ public:
     Q_INVOKABLE void setBackgound(const QString &fileName);
 
 private slots:
+    void onPrimaryScreenChanged();
     void onChanged();
 
 signals: