init commit

mainwindow.h

@@ -0,0 +1,35 @@
+#ifndef MAINWINDOW_H
+#define MAINWINDOW_H
+
+#include <QMainWindow>
+#include <QParallelAnimationGroup>
+#include <QPropertyAnimation>
+#include <QPushButton>
+
+class MainWindow : public QMainWindow
+{
+    Q_OBJECT
+
+public:
+    explicit MainWindow(QWidget *parent = nullptr);
+    ~MainWindow() override;
+
+protected slots:
+    void mousePressEvent(QMouseEvent *event) override;
+    void mouseMoveEvent(QMouseEvent *event) override;
+    void mouseReleaseEvent(QMouseEvent *event) override;
+    void mouseDoubleClickEvent(QMouseEvent *event) override;
+    void resizeEvent(QResizeEvent *event) override;
+
+    void closeWindow();
+
+private:
+    QPoint m_oldMousePos;
+    QPropertyAnimation *m_fadeOutAnimation;
+    QPropertyAnimation *m_floatUpAnimation;
+    QParallelAnimationGroup *m_exitAnimationGroup;
+    QPushButton *m_closeButton;
+    bool m_clickedOnWindow = false;
+};
+
+#endif // MAINWINDOW_H