diff --git a/frame/panel/mainpanelcontrol.cpp b/frame/panel/mainpanelcontrol.cpp
index b5ff9ff79..bf0df07ec 100644
--- a/frame/panel/mainpanelcontrol.cpp
+++ b/frame/panel/mainpanelcontrol.cpp
@@ -48,10 +48,14 @@ MainPanelControl::MainPanelControl(QWidget *parent)
     , m_position(Qt::TopEdge)
     , m_placeholderItem(nullptr)
     , m_appDragWidget(nullptr)
+    , m_dislayMode(Efficient)
 {
     init();
     updateMainPanelLayout();
+    updateDisplayMode();
     setAcceptDrops(true);
+
+    connect(this, SIGNAL(displayModeChanged()), this, SLOT(onDisplayModeChanged()));
 }
 
 MainPanelControl::~MainPanelControl()
@@ -84,15 +88,12 @@ void MainPanelControl::init()
     m_pluginLayout->setSpacing(0);
 }
 
-void MainPanelControl::updateDisplayMode(DisplayMode m_displayMode)
+void MainPanelControl::setDisplayMode(const DisplayMode mode)
 {
-    DAnchorsBase::clearAnchors(m_appAreaSonWidget);
-    DAnchors<QWidget> anchors(m_appAreaSonWidget);
-    if (m_displayMode == Dock::DisplayMode::Fashion) {
-        anchors.setAnchor(Qt::AnchorHorizontalCenter, this, Qt::AnchorHorizontalCenter);
-    } else {
-        anchors.setAnchor(Qt::AnchorLeft, m_appAreaWidget, Qt::AnchorLeft);
-    }
+    if (mode == m_dislayMode)
+        return;
+    m_dislayMode = mode;
+    emit displayModeChanged();
 }
 
 void MainPanelControl::updateMainPanelLayout()
@@ -573,3 +574,20 @@ DockItem *MainPanelControl::dropTargetItem(DockItem *sourceItem, QPoint point)
     }
     return targetItem;
 }
+
+
+void MainPanelControl::updateDisplayMode()
+{
+    DAnchorsBase::clearAnchors(m_appAreaSonWidget);
+    DAnchors<QWidget> anchors(m_appAreaSonWidget);
+    if (m_dislayMode == Dock::DisplayMode::Fashion) {
+        anchors.setAnchor(Qt::AnchorHorizontalCenter, this, Qt::AnchorHorizontalCenter);
+    } else {
+        anchors.setAnchor(Qt::AnchorLeft, m_appAreaWidget, Qt::AnchorLeft);
+    }
+}
+
+void MainPanelControl::onDisplayModeChanged()
+{
+    updateDisplayMode();
+}
diff --git a/frame/panel/mainpanelcontrol.h b/frame/panel/mainpanelcontrol.h
index 1c86eec8b..98a0436dc 100644
--- a/frame/panel/mainpanelcontrol.h
+++ b/frame/panel/mainpanelcontrol.h
@@ -54,7 +54,7 @@ public:
     void removeTrayAreaItem(QWidget *wdg);
     void removePluginAreaItem(QWidget *wdg);
     void setPositonValue(const Qt::Edge val);
-    void updateDisplayMode(DisplayMode m_displayMode);
+    void setDisplayMode(const  DisplayMode m_displayMode);
 
     MainPanelDelegate *delegate() const;
     void setDelegate(MainPanelDelegate *delegate);
@@ -62,6 +62,7 @@ public:
 signals:
     void itemMoved(DockItem *sourceItem, DockItem *targetItem);
     void itemAdded(const QString &appDesktop, int idx);
+    void displayModeChanged();
 
 private:
     void resizeEvent(QResizeEvent *event) override;
@@ -69,6 +70,7 @@ private:
     void init();
     void updateAppAreaSonWidgetSize();
     void updateMainPanelLayout();
+    void updateDisplayMode();
 
     void dragMoveEvent(QDragMoveEvent *e) override;
     void dragEnterEvent(QDragEnterEvent *e) override;
@@ -84,6 +86,7 @@ private:
 public slots:
     void insertItem(const int index, DockItem *item);
     void removeItem(DockItem *item);
+    void onDisplayModeChanged();
 
 private:
     QBoxLayout *m_mainPanelLayout;
@@ -101,6 +104,7 @@ private:
     MainPanelDelegate *m_delegate;
     QString m_draggingMimeKey;
     AppDragWidget *m_appDragWidget;
+    DisplayMode m_dislayMode;
 };
 
 #endif // MAINPANELCONTROL_H
diff --git a/frame/util/docksettings.cpp b/frame/util/docksettings.cpp
index 276bd8de6..6b5ff3676 100644
--- a/frame/util/docksettings.cpp
+++ b/frame/util/docksettings.cpp
@@ -34,6 +34,7 @@
 #define ICON_SIZE_MEDIUM        36
 #define ICON_SIZE_SMALL         30
 #define FASHION_MODE_PADDING    30
+#define MAINWINDOW_MARGIN       10
 
 DWIDGET_USE_NAMESPACE
 
@@ -583,13 +584,13 @@ void DockSettings::calculateWindowConfig()
         case Top:
         case Bottom: {
             m_mainWindowSize.setHeight(defaultHeight + PANEL_BORDER);
-            m_mainWindowSize.setWidth(primaryRect.width() - 20);
+            m_mainWindowSize.setWidth(primaryRect.width() - MAINWINDOW_MARGIN * 2);
             m_isMaxSize = (calcWidth == maxWidth);
             break;
         }
         case Left:
         case Right: {
-            m_mainWindowSize.setHeight(primaryRect.height() - 20);
+            m_mainWindowSize.setHeight(primaryRect.height() - MAINWINDOW_MARGIN * 2);
             m_mainWindowSize.setWidth(defaultWidth + PANEL_BORDER);
             m_isMaxSize = (calcHeight == maxHeight);
             break;
diff --git a/frame/window/mainwindow.cpp b/frame/window/mainwindow.cpp
index 0df4750bd..e0e5d1de5 100644
--- a/frame/window/mainwindow.cpp
+++ b/frame/window/mainwindow.cpp
@@ -72,6 +72,8 @@ MainWindow::MainWindow(QWidget *parent)
       m_launched(false),
       m_updatePanelVisible(false),
 
+      m_mainPanel(new MainPanelControl(this)),
+
       m_platformWindowHandle(this),
       m_wmHelper(DWindowManagerHelper::instance()),
 
@@ -105,8 +107,7 @@ MainWindow::MainWindow(QWidget *parent)
     m_settings = &DockSettings::Instance();
     m_xcbMisc->set_window_type(winId(), XcbMisc::Dock);
     m_size = m_settings->m_mainWindowSize;
-    m_mainPanel = new MainPanelControl(this);
-    m_mainPanel->updateDisplayMode(m_settings->displayMode());
+    m_mainPanel->setDisplayMode(m_settings->displayMode());
     initSNIHost();
     initComponents();
     initConnections();
@@ -935,5 +936,5 @@ void MainWindow::resizeMainPanelWindow()
 
 void MainWindow::updateDisplayMode()
 {
-    m_mainPanel->updateDisplayMode(m_settings->displayMode());
+    m_mainPanel->setDisplayMode(m_settings->displayMode());
 }