50 lines
1.4 KiB
C++
50 lines
1.4 KiB
C++
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/**
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* brief 工具类——反射，主要用作根据类名动态创建类
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* author 赵民勇
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* note :
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* 1、类需要继承自QObject或其派生数的上层节点包含QObject
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* 2、暂时只提供无参构造函数注册
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* 3、需要动态创建的类头文件中引入本头文件，并且在类定义中使用宏DECLARE_DYNAMIC_CLASS(yourClassName); 在类定义文件（.cpp）中使用IMPL_DYNAMIC_CLASS(yourClassName)
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* 4、例：
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* 类定义的头文件.h中：
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* #include <QObject>
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* #include "../common/reflect.h"
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* class MyClass : public QObject
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* {
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* Q_OBJECT
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* DECLARE_DYNCREATE(MyClass)
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* }
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*
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* .cpp文件中，代码开始前写上：
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* IMPLEMENT_DYNCREATE(MyClass)
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*/
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#include "reflect.h"
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int Reflect::registerClass(const QString& className, Constructor constructor)
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{
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QHash<QString, Constructor>& instances = constructors();
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instances.insert(className, constructor);
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return instances.size();
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}
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QObject * Reflect::createObject(const QString& className)
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{
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QHash<QString, Constructor>& instances = constructors();
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if (instances.contains(className)) {
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Constructor constructor = instances[className];
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if (constructor != nullptr) {
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return (*constructor)();
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}
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}
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return nullptr;
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}
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QHash<QString, Constructor>& Reflect::constructors()
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{
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static QHash<QString, Constructor> _instances;
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return _instances;
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}
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