修改界面：

1、右下角看板通过tabwidget管理很多可扩展控制页面；
2、定制右下角放大功能：占用右上角的看板空间；

HPPA/CustomDockWidgetBase.h

@@ -18,10 +18,13 @@ public:
     void setTile(QString title);
     void hideMaxButton();
 
-private slots:
-    void toggleMaximize();
+public slots:
+    virtual void toggleMaximize();
 
-private:
+signals:
+    void maximizeStateChanged(bool isMaximized);
+
+protected:
     QMainWindow* m_mainWindow = nullptr;
     QToolButton* m_maxButton = nullptr;
     bool m_isMaximized = false;
@@ -33,3 +36,18 @@ private:
     QLabel* title_label;
     void initialize();
 };
+
+class CustomDockWidgetHideAbove :
+    public CustomDockWidgetBase
+{
+    Q_OBJECT
+public:
+    explicit CustomDockWidgetHideAbove(QString title, QMainWindow* parent = nullptr);
+    explicit CustomDockWidgetHideAbove(QMainWindow* parent = nullptr);
+
+private slots:
+    void toggleMaximize();
+
+private:
+
+};