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| ** Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB). |
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| |
| #ifndef QT3DCORE_QNODE_P_H |
| #define QT3DCORE_QNODE_P_H |
| |
| // |
| // W A R N I N G |
| // ------------- |
| // |
| // This file is not part of the Qt API. It exists for the convenience |
| // of other Qt classes. This header file may change from version to |
| // version without notice, or even be removed. |
| // |
| // We mean it. |
| // |
| |
| #include <Qt3DCore/qnode.h> |
| |
| #include <functional> |
| |
| #include <Qt3DCore/private/propertychangehandler_p.h> |
| #include <Qt3DCore/private/qchangearbiter_p.h> |
| #include <Qt3DCore/private/qobservableinterface_p.h> |
| #include <Qt3DCore/private/qt3dcore_global_p.h> |
| #include <QtCore/private/qobject_p.h> |
| #include <QQueue> |
| |
| QT_BEGIN_NAMESPACE |
| |
| namespace Qt3DCore { |
| |
| class QNode; |
| class QAspectEngine; |
| |
| class Q_3DCORE_PRIVATE_EXPORT QNodePrivate : public QObjectPrivate, public QObservableInterface |
| { |
| public: |
| QNodePrivate(); |
| ~QNodePrivate(); |
| |
| void init(QNode *parent); |
| |
| virtual void setScene(QScene *scene); |
| QScene *scene() const; |
| |
| void setArbiter(QLockableObserverInterface *arbiter) override; |
| |
| void notifyPropertyChange(const char *name, const QVariant &value); |
| void notifyDynamicPropertyChange(const QByteArray &name, const QVariant &value); |
| void notifyObservers(const QSceneChangePtr &change) override; |
| |
| void insertTree(QNode *treeRoot, int depth = 0); |
| void updatePropertyTrackMode(); |
| |
| void update(); |
| void updateNode(QNode *node, const char* property, ChangeFlag change); |
| |
| Q_DECLARE_PUBLIC(QNode) |
| |
| // For now this just protects access to the m_changeArbiter. |
| // Later on we may decide to extend support for multiple observers. |
| QAbstractArbiter *m_changeArbiter; |
| QMetaObject *m_typeInfo; |
| QScene *m_scene; |
| mutable QNodeId m_id; |
| QNodeId m_parentId; // Store this so we have it even in parent's QObject dtor |
| bool m_blockNotifications; |
| bool m_hasBackendNode; |
| bool m_enabled; |
| bool m_notifiedParent; |
| QNode::PropertyTrackingMode m_defaultPropertyTrackMode; |
| QHash<QString, QNode::PropertyTrackingMode> m_trackedPropertiesOverrides; |
| |
| static QNodePrivate *get(QNode *q); |
| static const QNodePrivate *get(const QNode *q); |
| static void nodePtrDeleter(QNode *q); |
| |
| template<typename Caller, typename NodeType> |
| using DestructionFunctionPointer = void (Caller::*)(NodeType *); |
| |
| template<typename Caller, typename NodeType, typename PropertyType> |
| void registerDestructionHelper(NodeType *, DestructionFunctionPointer<Caller, NodeType>, PropertyType); |
| |
| template<typename Caller, typename NodeType> |
| void registerDestructionHelper(NodeType *node, DestructionFunctionPointer<Caller, NodeType> func, NodeType *&) |
| { |
| // If the node is destoyed, we make sure not to keep a dangling pointer to it |
| Q_Q(QNode); |
| auto f = [q, func]() { (static_cast<Caller *>(q)->*func)(nullptr); }; |
| m_destructionConnections.push_back({node, QObject::connect(node, &QNode::nodeDestroyed, f)}); |
| } |
| |
| template<typename Caller, typename NodeType> |
| void registerDestructionHelper(NodeType *node, DestructionFunctionPointer<Caller, NodeType> func, QVector<NodeType*> &) |
| { |
| // If the node is destoyed, we make sure not to keep a dangling pointer to it |
| Q_Q(QNode); |
| auto f = [q, func, node]() { (static_cast<Caller *>(q)->*func)(node); }; |
| m_destructionConnections.push_back({node, QObject::connect(node, &QNode::nodeDestroyed, f)}); |
| } |
| |
| template<typename Caller, typename ValueType> |
| using DestructionFunctionValue = void (Caller::*)(const ValueType&); |
| |
| template<typename Caller, typename NodeType, typename ValueType> |
| void registerDestructionHelper(NodeType *node, DestructionFunctionValue<Caller, ValueType> func, NodeType *&, |
| const ValueType &resetValue) |
| { |
| // If the node is destoyed, we make sure not to keep a dangling pointer to it |
| Q_Q(QNode); |
| auto f = [q, func, resetValue]() { (static_cast<Caller *>(q)->*func)(resetValue); }; |
| m_destructionConnections.push_back({node, QObject::connect(node, &QNode::nodeDestroyed, f)}); |
| } |
| |
| template<typename Caller, typename NodeType> |
| void registerPrivateDestructionHelper(NodeType *node, DestructionFunctionPointer<Caller, NodeType> func) |
| { |
| // If the node is destoyed, we make sure not to keep a dangling pointer to it |
| auto f = [this, func, node]() { (static_cast<Caller *>(this)->*func)(node); }; |
| m_destructionConnections.push_back({node, QObject::connect(node, &QNode::nodeDestroyed, f)}); |
| } |
| |
| void unregisterDestructionHelper(QNode *node) |
| { |
| m_destructionConnections.erase(std::remove_if(m_destructionConnections.begin(), |
| m_destructionConnections.end(), |
| [node] (const QPair<QNode *, QMetaObject::Connection> &nodeConnectionPair) { |
| if (nodeConnectionPair.first == node) { |
| QObject::disconnect(nodeConnectionPair.second); |
| return true; |
| } |
| return false; |
| }), |
| m_destructionConnections.end()); |
| } |
| |
| static const QMetaObject *findStaticMetaObject(const QMetaObject *metaObject); |
| |
| void _q_postConstructorInit(); |
| void _q_ensureBackendNodeCreated(); |
| |
| private: |
| void createBackendNode(); |
| void notifyDestructionChangesAndRemoveFromScene(); |
| void _q_addChild(QNode *childNode); |
| void _q_removeChild(QNode *childNode); |
| void _q_setParentHelper(QNode *parent); |
| void registerNotifiedProperties(); |
| void unregisterNotifiedProperties(); |
| void propertyChanged(int propertyIndex); |
| |
| void setSceneHelper(QNode *root); |
| void unsetSceneHelper(QNode *root); |
| void addEntityComponentToScene(QNode *root); |
| |
| friend class PropertyChangeHandler<QNodePrivate>; |
| bool m_propertyChangesSetup; |
| PropertyChangeHandler<QNodePrivate> m_signals; |
| QVector<QPair<QNode *, QMetaObject::Connection>> m_destructionConnections; |
| }; |
| |
| class NodePostConstructorInit : public QObject |
| { |
| Q_OBJECT |
| public: |
| NodePostConstructorInit(QObject *parent = nullptr); |
| virtual ~NodePostConstructorInit(); |
| void removeNode(QNode *node); |
| void addNode(QNode *node); |
| |
| public Q_SLOTS: |
| void processNodes(); |
| |
| private: |
| QQueue<QNodePrivate *> m_nodesToConstruct; |
| bool m_requestedProcessing; |
| }; |
| |
| } // namespace Qt3DCore |
| |
| QT_END_NAMESPACE |
| |
| #endif // QT3DCORE_NODE_P_H |