Bug 201847 [Regression] Italic does not work in PPT [1205]
engine/org.eclipse.birt.report.engine.emitter.ppt/src/org/eclipse/birt/report/engine/emitter/ppt/PPTWriter.java
*            the offset X percentage relating to start X
	 * @param positionY
	 *            the offset Y percentage relating to start Y
	 * @param repeat
	 *            the background-repeat property
	 * @param xMode
	 *            whether the horizontal position is a percentage value or not
	 * @param yMode
	 *            whether the vertical position is a percentage value or not
	 */
	public void drawBackgroundImage( String imageURI, float x, float y,
			float width, float height, float positionX, float positionY,
			String repeat )
	{
		
		if ( imageURI == null || imageURI.length( ) == 0 )
		{
			return;
		}
		float imageWidth = 0;
		float imageHeight = 0;
		byte[] imageData = null;
		InputStream imageStream = null;
		try
		{
			URL url = new URL( imageURI );
			imageStream = url.openStream( );
			imageData = new byte[imageStream.available( )];
			imageStream.read( imageData );
			imageStream.close( );