QGraphicsItem如何实现simulink模块封装c++
时间: 2024-01-23 13:03:52 浏览: 92
实现Simulink模块封装的一种方法是创建自定义QGraphicsItem类,该类包含多个输入和输出端口,以及一些属性和方法,用于封装某个Simulink模块。
以下是一个简单的示例:
```c++
class SimulinkModule : public QGraphicsItem {
public:
SimulinkModule(QList<QString> inputs, QList<QString> outputs, QGraphicsItem *parent = nullptr);
QRectF boundingRect() const override;
void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) override;
void addInput(QString name, int type);
void addOutput(QString name, int type);
void setParameter(QString name, QVariant value);
QVariant getParameter(QString name);
QVariant evaluate(QList<QVariant> inputs);
private:
QList<QString> m_inputs;
QList<QString> m_outputs;
QMap<QString, QVariant> m_parameters;
};
```
在这个例子中,SimulinkModule类包含多个输入和输出端口,可以添加和获取模块的参数,以及计算模块的输出。该类还可以绘制模块的外观,并返回模块的边界矩形。
使用SimulinkModule类,可以将多个Simulink模块封装成一个QGraphicsItem,以便在Qt中进行图形化展示和编辑。
具体实现细节可以参考Qt官方文档和相关教程。
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