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