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Expose VRc to the C++ API

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(Not yet in use in the code gen)
This commit is contained in:
Olivier Goffart 2020-11-10 12:43:19 +01:00
parent 503567d84c
commit 3194dd21ca
3 changed files with 138 additions and 8 deletions
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38
api/sixtyfps-cpp/include/sixtyfps.h
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@ -272,7 +272,7 @@ inline FocusEventResult process_focus_event(ComponentRef component, int64_t &foc
void dealloc(const ComponentVTable*, uint8_t *ptr, vtable::Layout layout) {
#ifdef __cpp_sized_deallocation
::operator delete(reinterpret_cast<void*>(ptr), layout.size, layout.align);
::operator delete(reinterpret_cast<void*>(ptr), layout.size, static_cast<std::align_val_t>(layout.align));
#else
::operator delete(reinterpret_cast<void*>(ptr));
#endif
@ -281,10 +281,44 @@ void dealloc(const ComponentVTable*, uint8_t *ptr, vtable::Layout layout) {
template<typename T> vtable::Layout drop_in_place(ComponentRef component) {
reinterpret_cast<T*>(component.instance)->~T();
return vtable::Layout { sizeof(T), std::align_val_t(alignof(T)) };
return vtable::Layout { sizeof(T), alignof(T) };
}
} // namespace private_api
template<typename T> class ComponentWeakHandle;
/// The component handle is like a shared pointer to a component in the generated code.
/// In order to get a component, use `T::create()` where T is the name of the component
/// in the .60 file. This give you a `ComponentHandle<T>`
template<typename T>
class ComponentHandle {
vtable::VRc<private_api::ComponentVTable, T> inner;
friend class ComponentWeakHandle<T>;
public:
/// internal constructor
ComponentHandle(const vtable::VRc<private_api::ComponentVTable, T> &inner) : inner(inner) { }
const T* operator->() const {
return inner.operator->();
}
};
/// A weak reference to the component. Can be constructed from a `ComponentHandle<T>`
template<typename T>
class ComponentWeakHandle {
vtable::VWeak<private_api::ComponentVTable, T> inner;
public:
ComponentWeakHandle() = default;
ComponentWeakHandle(const ComponentHandle<T>&other) : inner(other.inner) {}
std::optional<ComponentHandle<T>> lock() {
if (auto l = inner.lock()) {
return { ComponentHandle(*l) };
} else {
return {};
}
}
};
// layouts:
using cbindgen_private::grid_layout_info;
using cbindgen_private::GridLayoutCellData;