editor/customgraphics.h

#ifndef CUSTOMGRAPHICS_H
#define CUSTOMGRAPHICS_H

#include <QGraphicsObject>
// 只需要前向声明，因为头文件中只用到了指针
class QPainter;
class QGraphicsSceneMouseEvent;
class QGraphicsSceneContextMenuEvent;

enum class ComponentType {
    Button,
    Indicator
};

// HMI组件基类
class HmiComponent : public QGraphicsObject
{
    Q_OBJECT
    Q_PROPERTY(QColor color READ color WRITE setColor)
    Q_PROPERTY(QString componentName READ componentName WRITE setComponentName)

signals:
    void selected(HmiComponent* item);
    // 为复制和删除请求添加信号
    void copyRequested(HmiComponent* item);
    void deleteRequested(HmiComponent* item);
    void appearanceChangedRequested(HmiComponent* item);

public:
    explicit HmiComponent(QGraphicsItem *parent = nullptr);

    void setColor(const QColor& color);
    QColor color() const;
    void setComponentName(const QString& name);
    QString componentName() const;

    void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) override;

public slots:
    void changeAppearance();

protected:
    void mousePressEvent(QGraphicsSceneMouseEvent *event) override;
    // 重写上下文菜单事件
    void contextMenuEvent(QGraphicsSceneContextMenuEvent *event) override;
    virtual void paintShape(QPainter* painter) = 0;

protected:
    QColor m_color;
    QString m_componentName;
};


// 按钮类
class HmiButton : public HmiComponent
{
public:
    HmiButton(QGraphicsItem *parent = nullptr);
    QRectF boundingRect() const override;

protected:
    void paintShape(QPainter *painter) override;
};

// 指示灯类
class HmiIndicator : public HmiComponent
{
public:
    HmiIndicator(QGraphicsItem *parent = nullptr);
    QRectF boundingRect() const override;

protected:
    void paintShape(QPainter *painter) override;
};

#endif // CUSTOMGRAPHICS_H