Bug 194371 Use page emitter framework to implement ppt emitter.
In order to keep consistent with pdf and postscript, ppt need to use page emitter framework.
engine/org.eclipse.birt.report.engine.emitter.ppt/src/org/eclipse/birt/report/engine/emitter/ppt/PPTRender.java
{
			curPos = (ContainerPosition) containerStack.peek( );
		}
		else
		{
			curPos = new ContainerPosition( 0, 0 );
		}
		return curPos;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.engine.layout.area.IAreaVisitor#setTotalPage(org.eclipse.birt.report.engine.layout.area.ITextArea)
	 */
	public void setTotalPage( ITextArea totalPage )
	{
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.engine.layout.area.IAreaVisitor#visitText(org.eclipse.birt.report.engine.layout.area.ITextArea)
	 */
	public void visitText( ITextArea textArea )
	{
		ContainerPosition curPos = getContainerPosition( );
		
		int x = curPos.x + textArea.getX( );
		int y = curPos.y + textArea.getY( );
		drawTextAt( textArea, x, y );
	}