implement top level shape and method to get it

This class contains the glcontext

Change-Id: If0418cfbfb0486396a75ab274e7b480607f8de6d

chart2/source/view/inc/DummyXShape.hxx

@@ -32,6 +32,10 @@ namespace chart {
 
 namespace dummy {
 
+class DummyChart;
+
+struct OpenglContext;
+
 class DummyXShape : public cppu::WeakImplHelper5<
                     ::com::sun::star::drawing::XShape,
                     com::sun::star::beans::XPropertySet,
@@ -72,6 +76,8 @@ public:
     virtual ::com::sun::star::uno::Sequence< OUString > SAL_CALL getSupportedServiceNames() throw(::com::sun::star::uno::RuntimeException);
     virtual sal_Bool SAL_CALL supportsService( const OUString& ServiceName ) throw (::com::sun::star::uno::RuntimeException);
 
+    virtual DummyChart* getRootShape();
+
 private:
     OUString maName;
     com::sun::star::awt::Point maPosition;
@@ -81,6 +87,18 @@ private:
 
 };
 
+class DummyChart : public DummyXShape
+{
+public:
+    virtual DummyChart* getRootShape();
+
+    OpenglContext* getGlContext() { return mpContext; }
+
+private:
+    OpenglContext* mpContext;
+};
+
+
 class DummyXShapes : public DummyXShape, public com::sun::star::drawing::XShapes
 {
 public:

chart2/source/view/main/DummyXShape.cxx

@@ -155,6 +155,19 @@ void DummyXShape::setParent( const uno::Reference< uno::XInterface >& xParent )
     mxParent = xParent;
 }
 
+DummyChart* DummyXShape::getRootShape()
+{
+    assert(mxParent.is());
+    DummyXShape* pParent = dynamic_cast<DummyXShape*>(mxParent.get());
+    assert(pParent);
+    return pParent->getRootShape();
+}
+
+DummyChart* DummyChart::getRootShape()
+{
+    return this;
+}
+
 uno::Any DummyXShapes::queryInterface( const uno::Type& rType )
     throw(uno::RuntimeException)
 {