MetaTypes.h
46 lines
| 1.4 KiB
| text/x-c
|
CLexer
Alexandre Leroux
|
r308 | #ifndef SCIQLOP_METATYPES_H | ||
| #define SCIQLOP_METATYPES_H | ||||
| #include <QMetaType> | ||||
| /** | ||||
| * Struct used to create an instance that registers a type in Qt for signals / slots mechanism | ||||
| * @tparam T the type to register | ||||
| */ | ||||
| template <typename T> | ||||
| struct MetaTypeRegistry { | ||||
| explicit MetaTypeRegistry() { qRegisterMetaType<T>(); } | ||||
| }; | ||||
| /** | ||||
| * This macro can be used to : | ||||
| * - declare a type as a Qt meta type | ||||
| * - and register it (through a static instance) at the launch of SciQlop, so it can be passed in | ||||
| * Qt signals/slots | ||||
| * | ||||
| * It can be used both in .h or in .cpp files | ||||
| * | ||||
| * @param NAME name of the instance under which the type will be registered (in uppercase) | ||||
| * @param TYPE type to register | ||||
| * | ||||
| * Example: | ||||
| * ~~~cpp | ||||
| * // The following macro : | ||||
| * // - declares std::shared_ptr<Variable> as a Qt meta type | ||||
| * // - registers it through an instance named VAR_SHARED_PTR | ||||
| * SCIQLOP_REGISTER_META_TYPE(VAR_SHARED_PTR, std::shared_ptr<Variable>) | ||||
| * | ||||
| * // The following macro : | ||||
| * // - declares a raw pointer of Variable as a Qt meta type | ||||
| * // - registers it through an instance named VAR_RAW_PTR | ||||
| * SCIQLOP_REGISTER_META_TYPE(VAR_RAW_PTR, Variable*) | ||||
| * ~~~ | ||||
| * | ||||
| */ | ||||
| // clang-format off | ||||
| #define SCIQLOP_REGISTER_META_TYPE(NAME, TYPE) \ | ||||
| Q_DECLARE_METATYPE(TYPE) \ | ||||
| const auto NAME = MetaTypeRegistry<TYPE>{}; \ | ||||
| // clang-format on | ||||
| #endif // SCIQLOP_METATYPES_H | ||||