88 lines
3.3 KiB
C++
88 lines
3.3 KiB
C++
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#ifndef slic3r_ObjectID_hpp_
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#define slic3r_ObjectID_hpp_
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#include <cereal/types/polymorphic.hpp>
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#include <cereal/types/map.hpp>
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#include <cereal/types/string.hpp>
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#include <cereal/types/vector.hpp>
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#include <cereal/archives/binary.hpp>
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namespace Slic3r {
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// Unique identifier of a mutable object accross the application.
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// Used to synchronize the front end (UI) with the back end (BackgroundSlicingProcess / Print / PrintObject)
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// (for Model, ModelObject, ModelVolume, ModelInstance or ModelMaterial classes)
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// and to serialize / deserialize an object onto the Undo / Redo stack.
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// Valid IDs are strictly positive (non zero).
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// It is declared as an object, as some compilers (notably msvcc) consider a typedef size_t equivalent to size_t
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// for parameter overload.
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class ObjectID
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{
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public:
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ObjectID(size_t id) : id(id) {}
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bool operator==(const ObjectID &rhs) const { return this->id == rhs.id; }
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bool operator!=(const ObjectID &rhs) const { return this->id != rhs.id; }
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bool operator< (const ObjectID &rhs) const { return this->id < rhs.id; }
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bool operator> (const ObjectID &rhs) const { return this->id > rhs.id; }
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bool operator<=(const ObjectID &rhs) const { return this->id <= rhs.id; }
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bool operator>=(const ObjectID &rhs) const { return this->id >= rhs.id; }
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bool valid() const { return id != 0; }
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size_t id;
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private:
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ObjectID() {}
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friend class cereal::access;
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template<class Archive> void serialize(Archive &ar) { ar(id); }
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};
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// Base for Model, ModelObject, ModelVolume, ModelInstance or ModelMaterial to provide a unique ID
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// to synchronize the front end (UI) with the back end (BackgroundSlicingProcess / Print / PrintObject).
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// Achtung! The s_last_id counter is not thread safe, so it is expected, that the ObjectBase derived instances
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// are only instantiated from the main thread.
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class ObjectBase
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{
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public:
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ObjectID id() const { return m_id; }
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protected:
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// Constructors to be only called by derived classes.
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// Default constructor to assign a unique ID.
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ObjectBase() : m_id(generate_new_id()) {}
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// Constructor with ignored int parameter to assign an invalid ID, to be replaced
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// by an existing ID copied from elsewhere.
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ObjectBase(int) : m_id(ObjectID(0)) {}
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// The class tree will have virtual tables and type information.
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virtual ~ObjectBase() {}
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// Use with caution!
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void set_new_unique_id() { m_id = generate_new_id(); }
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void set_invalid_id() { m_id = 0; }
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// Use with caution!
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void copy_id(const ObjectBase &rhs) { m_id = rhs.id(); }
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// Override this method if a ObjectBase derived class owns other ObjectBase derived instances.
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void assign_new_unique_ids_recursive() { this->set_new_unique_id(); }
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private:
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ObjectID m_id;
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static inline ObjectID generate_new_id() { return ObjectID(++ s_last_id); }
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static size_t s_last_id;
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friend ObjectID wipe_tower_object_id();
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friend ObjectID wipe_tower_instance_id();
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friend class cereal::access;
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template<class Archive> void serialize(Archive &ar) { ar(m_id); }
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ObjectBase(const ObjectID id) : m_id(id) {}
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template<class Archive> static void load_and_construct(Archive & ar, cereal::construct<ObjectBase> &construct) { ObjectID id; ar(id); construct(id); }
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};
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} // namespace Slic3r
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#endif /* slic3r_ObjectID_hpp_ */
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