optimize last active window color scheme update

app/wm/tracker/lastactivewindow.cpp

@@ -48,6 +48,12 @@ LastActiveWindow::LastActiveWindow(TrackedGeneralInfo *trackedInfo)
       m_windowsTracker(trackedInfo->wm()->windowsTracker()),
       m_wm(trackedInfo->wm())
 {
+    connect(m_wm->schemesTracker(), &Schemes::colorSchemeChanged, this, [&](WindowId wid) {
+        if (wid == m_winId) {
+            updateColorScheme();
+        }
+    });
+
     connect(m_windowsTracker, &Windows::windowChanged, this, &LastActiveWindow::windowChanged);
     connect(m_windowsTracker, &Windows::windowRemoved, this, &LastActiveWindow::windowRemoved);
 }
@@ -307,9 +313,8 @@ void LastActiveWindow::setInformation(const WindowInfoWrap &info)
     setGeometry(info.geometry());
     setIsKeepAbove(info.isKeepAbove());
 
-    auto scheme = m_wm->schemesTracker()->schemeForWindow(info.wid());
-    if (scheme) {
-        setColorScheme(scheme->schemeFile());
+    if (firstActiveness) {
+        updateColorScheme();
     }
 
     if (info.appName().isEmpty()) {
@@ -405,6 +410,14 @@ void LastActiveWindow::clearHistory()
     }
 }
 
+void LastActiveWindow::updateColorScheme()
+{
+    auto scheme = m_wm->schemesTracker()->schemeForWindow(m_winId);
+    if (scheme) {
+        setColorScheme(scheme->schemeFile());
+    }
+}
+
 
 //! FUNCTIONALITY
 void LastActiveWindow::requestActivate()

app/wm/tracker/lastactivewindow.h

@@ -149,6 +149,7 @@ private:
     void setWinId(QVariant winId);
 
     void clearHistory();
+    void updateColorScheme();
 
 private:
     bool m_isActive{false};

app/wm/tracker/schemes.cpp

@@ -54,6 +54,12 @@ void Schemes::init()
 {
     updateDefaultScheme();
 
+    connect(this, &Schemes::colorSchemeChanged, this, [&](WindowId wid) {
+        if (wid == m_wm->activeWindow()) {
+            emit m_wm->activeWindowChanged(wid);
+        }
+    });
+
     connect(m_wm, &AbstractWindowInterface::windowRemoved, this, [&](WindowId wid) {
         m_windowScheme.remove(wid);
     });
@@ -129,9 +135,7 @@ void Schemes::setColorSchemeForWindow(WindowId wid, QString scheme)
         m_windowScheme[wid] = schemeFile;
     }
 
-    if (wid == m_wm->activeWindow()) {
-        emit m_wm->activeWindowChanged(wid);
-    }
+    emit colorSchemeChanged(wid);
 }
 
 }

app/wm/tracker/schemes.h

@@ -48,6 +48,9 @@ public:
     SchemeColors *schemeForWindow(WindowId wId);
     void setColorSchemeForWindow(WindowId wId, QString scheme);
 
+signals:
+    void colorSchemeChanged(const WindowId &wid);
+
 private slots:
     void updateDefaultScheme();