Add new components, DateSlidePickerBox and DateSelectDialog.

src/components/DateSlidePickerBox.h

@@ -0,0 +1,34 @@
+//
+// Created by Krad on 2022/3/24.
+//
+
+#ifndef GUI_DATESLIDEPICKERBOX_H
+#define GUI_DATESLIDEPICKERBOX_H
+
+#include <QWidget>
+#include "SlidePickerBox.h"
+#include <QDate>
+class QHBoxLayout;
+class DateSlidePickerBox:public QWidget {
+    Q_OBJECT
+public:
+    explicit DateSlidePickerBox(QWidget *parent = nullptr);
+    QString getSelectedValue();
+    void setSelectedValue(const QString& val);
+    void resizeLabel();
+    SlidePickerBox* myear;
+    SlidePickerBox* tyear;
+    SlidePickerBox* year;
+    SlidePickerBox* month;
+    SlidePickerBox* day;
+public Q_SLOTS:
+    void leapYearAndFebruaryAdjust();
+private:
+    int getYear();
+    QStringList bigMonth;
+    bool isBigMonth();
+    QHBoxLayout* layout;
+};
+
+
+#endif //GUI_DATESLIDEPICKERBOX_H