Bug 196272 Text position is incorrect in postscript and ppt.
Text position need to be ajusted according to baseline position.
engine/org.eclipse.birt.report.engine.emitter.ppt/src/org/eclipse/birt/report/engine/emitter/ppt/device/PPTPage.java
{
			writer.endPage( );
			isDisposed = true;
		}
	}
	public void drawBackgroundColor( Color color, int x, int y, int width,
			int height )
	{
		writer.drawBackgroundColor( color,
				convertToPoint( x ),
				convertToPoint( y ),
				convertToPoint( width ),
				convertToPoint( height ) );
	}
	public void drawBackgroundImage( int x, int y, int width, int height,
			String repeat, String imageUrl, int absPosX, int absPosY )
			throws IOException
	{
		writer.drawBackgroundImage( imageUrl,
				convertToPoint( x ),
				convertToPoint( y ),
				convertToPoint( width ),
				convertToPoint( height ),
				convertToPoint( absPosX ),
				convertToPoint( absPosY ),
				repeat );
	}
	public void drawImage( byte[] imageData, String extension, int imageX,
			int imageY, int height, int width, String helpText )
			throws Exception