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36
37#ifndef QT3DCORE_QNODECREATEDCHANGEGENERATOR_H
38#define QT3DCORE_QNODECREATEDCHANGEGENERATOR_H
39
40//
41// W A R N I N G
42// -------------
43//
44// This file is not part of the Qt API. It exists for the convenience
45// of other Qt classes. This header file may change from version to
46// version without notice, or even be removed.
47//
48// We mean it.
49//
50
51#include <Qt3DCore/qnode.h>
52#include <Qt3DCore/qnodecreatedchange.h>
53#include <Qt3DCore/qt3dcore_global.h>
54#include <QtCore/qvector.h>
55
56#include <Qt3DCore/private/qnode_p.h>
57
58QT_BEGIN_NAMESPACE
59
60namespace Qt3DCore {
61
62class Q_3DCORE_PRIVATE_EXPORT QNodeCreatedChangeGenerator
63{
64public:
65 QNodeCreatedChangeGenerator(QNode *rootNode);
66
67 QVector<QNodeCreatedChangeBasePtr> creationChanges() const { return m_creationChanges; }
68
69private:
70 void createCreationChange(QNode *node)
71 {
72 const auto creationChange = node->createNodeCreationChange();
73 m_creationChanges.push_back(creationChange);
74
75 // Store the metaobject of the node in the QNode so that we have it available
76 // to us during destruction in the QNode destructor. This allows us to send
77 // the QNodeId and the metaobject as typeinfo to the backend aspects so they
78 // in turn can find the correct QBackendNodeMapper object to handle the destruction
79 // of the corresponding backend nodes.
80 QNodePrivate *d = QNodePrivate::get(node);
81 d->m_typeInfo = const_cast<QMetaObject*>(creationChange->metaObject());
82
83 // Mark this node as having been handled for creation so that it is picked up
84 d->m_hasBackendNode = true;
85 }
86
87 QVector<QNodeCreatedChangeBasePtr> m_creationChanges;
88};
89
90} // namespace Qt3DCore
91
92QT_END_NAMESPACE
93
94#endif // QT3DCORE_QNODECREATEDCHANGEGENERATOR_H
95