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/device/PostscriptPage.java
*      float)
	 */
	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 clip( int startX, int startY, int width, int height )
	{
		writer.clipRect( convertToPoint( startX ), convertToPoint( startY ),
				convertToPoint( width ), convertToPoint( height ) );
	}
	public void clipSave( )
	{
		writer.clipSave( );
	}
	public void clipRestore( )
	{
		writer.clipRestore( );
	}
	private float convertToPoint( int value )
	{
		return value / PDFConstants.LAYOUT_TO_PDF_RATIO;
	}
}