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Introduce a property listener

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This commit is contained in:
Olivier Goffart 2020-07-03 13:02:50 +02:00
parent b529a021a2
commit 769474a478
4 changed files with 163 additions and 28 deletions
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26
api/sixtyfps-cpp/include/sixtyfps_properties.h
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@ -100,4 +100,28 @@ void Property<float>::set_animated_binding(F binding,
&animation_data);
}
}
struct PropertyListenerScope
{
PropertyListenerScope() { internal::sixtyfps_property_listener_scope_init(&inner); }
~PropertyListenerScope() { internal::sixtyfps_property_listener_scope_drop(&inner); }
PropertyListenerScope(const PropertyListenerScope &) = delete;
PropertyListenerScope &operator=(const PropertyListenerScope &) = delete;
bool is_dirty() const {
return internal::sixtyfps_property_listener_scope_is_dirty(&inner);
}
template<typename F>
bool evaluate(F &f) const {
return internal::sixtyfps_property_listener_scope_evaluate(
&inner,
[](void *f){ (*reinterpret_cast<F*>(f))(); },
&f
);
}
private:
internal::PropertyListenerOpaque inner;
};
} // namespace sixtyfps