QNode parent changes

- introduce QNode::setParent(QNode *)
- QNode created with explicit parent now invoke
  QNodePrivate::_q_addChild
- QNode::cleanup introduces, need to be added to the
  dtor of every QT3D_CLONABLE QNode subclass. Handles
  proper destruction.
- QNode::cleanup added to all classes that should have it.
- Updated unit tests of Nodes, Entity, Scene

Change-Id: Id2c2784122a78edaae5580fe5976d88be5a1921c
Task-number: QTBUG-45947
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>

2 files changed, 6 insertions, 0 deletions

diff --git a/examples/qt3d/tessellation-modes/tessellatedquadmesh.cpp b/examples/qt3d/tessellation-modes/tessellatedquadmesh.cpp
index 6b04e5da3..08a3f54b3 100644
--- a/examples/qt3d/tessellation-modes/tessellatedquadmesh.cpp
+++ b/examples/qt3d/tessellation-modes/tessellatedquadmesh.cpp
@@ -45,6 +45,11 @@ TessellatedQuadMesh::TessellatedQuadMesh(Qt3D::QNode *parent)
 {
 }
 
+TessellatedQuadMesh::~TessellatedQuadMesh()
+{
+    QNode::cleanup();
+}
+
 class TessellatedQuadMeshFunctor : public Qt3D::QAbstractMeshFunctor
 {
 public:
diff --git a/examples/qt3d/tessellation-modes/tessellatedquadmesh.h b/examples/qt3d/tessellation-modes/tessellatedquadmesh.h
index 76b00ae01..0bb6459ef 100644
--- a/examples/qt3d/tessellation-modes/tessellatedquadmesh.h
+++ b/examples/qt3d/tessellation-modes/tessellatedquadmesh.h
@@ -44,6 +44,7 @@ class TessellatedQuadMesh : public Qt3D::QAbstractMesh
     Q_OBJECT
 public:
     explicit TessellatedQuadMesh(Qt3D::QNode *parent = 0);
+    ~TessellatedQuadMesh();
 
     Qt3D::QAbstractMeshFunctorPtr meshFunctor() const Q_DECL_OVERRIDE;