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.postscript/src/org/eclipse/birt/report/engine/emitter/postscript/PostscriptWriter.java
}
	private ArrayImageSource getImageSource( Image image ) throws IOException
	{
		ImageIcon imageIcon = new ImageIcon( image );
		int w = imageIcon.getIconWidth( );
		int h = imageIcon.getIconHeight( );
		int[] pixels = new int[w * h];
		try
		{
			PixelGrabber pg = new PixelGrabber( image, 0, 0, w, h, pixels, 0, w );
			pg.grabPixels( );
			if ( ( pg.getStatus( ) & ImageObserver.ABORT ) != 0 )
			{
				throw new IOException( "failed to load image contents" );
			}
		}
		catch ( InterruptedException e )
		{
			throw new IOException( "image load interrupted" );
		}
		ArrayImageSource imageSource = new ArrayImageSource( w, h, pixels );
		return imageSource;
	}
	private void drawImage( ImageSource imageSource, float x, float y,
			float width, float height, Color bgcolor )
	{
		int originalWidth = imageSource.getWidth( );
		int originalHeight = imageSource.getHeight( );
		y = transformY( y );
		gSave( );