Qt [GC9-19]：液晶仪表整体框架调整

子控件
#ifndef MD_COMFORT_H
#define MD_COMFORT_H
#include <QWidget>
#include <QPaintEvent>
#include <QPainter>
namespace Ui {
class MD_Comfort;
}
class MD_Comfort : public QWidget
{
    Q_OBJECT
public:
    explicit MD_Comfort(QWidget *parent = 0);
    ~MD_Comfort();
    void set_MDC_RotateSpeed(int rotateSpeed);
    void set_MDC_CarSpeed(int carSpeed);
protected:
    /*
     * 事件过滤器
     */
    bool eventFilter(QObject *watched, QEvent *event);
    /*
     * 绘制转速表
     */
    void draw_RotatetSpeed(int rotateSpeed);
    /*
     * 绘制转速
     */
    void draw_CarSpeed(int carSpeed);
private:
    Ui::MD_Comfort *ui;
    int m_RotateSpeed = 0;      //转速
    int m_CarSpeed = 0;         //车速
};
#endif // MD_COMFORT_H

主液晶显示面板
#ifndef METERDISPLAY_H
#define METERDISPLAY_H
#include <QWidget>
#include <QMouseEvent>
#include <QKeyEvent>
#include "md_comfort.h"
namespace Ui {
class MeterDisplay;
}
class MeterDisplay : public QWidget
{
    Q_OBJECT
public:
    explicit MeterDisplay(QWidget *parent = 0);
    ~MeterDisplay();
    void set_MD_RotateSpeed(int rotateSpeed);
    void set_MD_CarSpeed(int carSpeed);
private:
    /*
     * 鼠标按下事件
     */
    void mousePressEvent(QMouseEvent *event);
    /*
     * 鼠标移动事件
     */
    void mouseMoveEvent(QMouseEvent *event);
    /*
     * 鼠标松开事件
     */
    void mouseReleaseEvent(QMouseEvent *event);
    /*
     * 键盘事件
     */
    void keyReleaseEvent(QKeyEvent *event);
private:
    Ui::MeterDisplay *ui;
    MD_Comfort *md_Comfort = NULL; //舒适界面UI
};
#endif // METERDISPLAY_H