fix: Adjust the effects level of kwin to Optimal-performance, multiTasks plugin can not hide

as title

Log: as title
Bug: https://pms.uniontech.com/bug-view-286871.html

Author: yixinshark

panels/dock/multitaskview/multitaskview.cpp

@@ -15,9 +15,13 @@
 #include <DGuiApplicationHelper>
 
 DGUI_USE_NAMESPACE
+DCORE_USE_NAMESPACE
 
 namespace dock {
 
+constexpr int KWinOptimalPerformance = 4;
+const QString windowEffectTypeKey = QStringLiteral("user_type");
+
 MultiTaskView::MultiTaskView(QObject *parent)
     : DApplet(parent)
     , m_iconName("deepin-multitasking-view")
@@ -26,6 +30,19 @@ MultiTaskView::MultiTaskView(QObject *parent)
     auto platformName = QGuiApplication::platformName();
     if (QStringLiteral("wayland") == platformName) {
         m_multitaskview.reset(new TreeLandMultitaskview);
+    } else {
+        m_kWinCompositingConfig = DConfig::create("org.kde.kwin", "org.kde.kwin.compositing", QString(), this);
+        m_kWinEffect = m_kWinCompositingConfig->value(windowEffectTypeKey).toInt() != KWinOptimalPerformance;
+
+        connect(m_kWinCompositingConfig, &DConfig::valueChanged, this, [=] (const QString &key) {
+            if (key == windowEffectTypeKey) {
+                bool kWinEffect = m_kWinCompositingConfig->value(windowEffectTypeKey).toInt() != KWinOptimalPerformance;
+                if (kWinEffect != m_kWinEffect) {
+                    m_kWinEffect = kWinEffect;
+                    Q_EMIT visibleChanged();
+                }
+            }
+        });
     }
 }
 
@@ -65,7 +82,7 @@ void MultiTaskView::setIconName(const QString& iconName)
 
 bool MultiTaskView::visible() const
 {
-    return m_visible && DWindowManagerHelper::instance()->hasComposite();
+    return m_kWinEffect && m_visible && DWindowManagerHelper::instance()->hasComposite();
 }
 
 DockItemInfo MultiTaskView::dockItemInfo()

panels/dock/multitaskview/multitaskview.h

@@ -9,6 +9,8 @@
 #include "dsglobal.h"
 #include "treelandmultitaskview.h"
 
+#include <DConfig>
+
 namespace dock {
 
 class MultiTaskView : public DS_NAMESPACE::DApplet
@@ -36,9 +38,11 @@ class MultiTaskView : public DS_NAMESPACE::DApplet
     void visibleChanged();
 
 private:
-    bool m_visible;
+    bool m_visible = true;
+    bool m_kWinEffect = true;
     QString m_iconName;
     QScopedPointer<TreeLandMultitaskview> m_multitaskview;
+    Dtk::Core::DConfig *m_kWinCompositingConfig = nullptr;
 };
 
 }