UnixPrintJob.java 文件源码

public void printableJob(Printable printable) throws PrintException {
    try {
        synchronized(this) {
            if (job != null) { // shouldn't happen
                throw new PrintException("already printing");
            } else {
                job = new PSPrinterJob();
            }
        }
        job.setPrintService(getPrintService());
        job.setCopies(copies);
        job.setJobName(jobName);
        PageFormat pf = new PageFormat();
        if (mediaSize != null) {
            Paper p = new Paper();
            p.setSize(mediaSize.getX(MediaSize.INCH)*72.0,
                      mediaSize.getY(MediaSize.INCH)*72.0);
            p.setImageableArea(72.0, 72.0, p.getWidth()-144.0,
                               p.getHeight()-144.0);
            pf.setPaper(p);
        }
        if (orient == OrientationRequested.REVERSE_LANDSCAPE) {
            pf.setOrientation(PageFormat.REVERSE_LANDSCAPE);
        } else if (orient == OrientationRequested.LANDSCAPE) {
            pf.setOrientation(PageFormat.LANDSCAPE);
        }
        job.setPrintable(printable, pf);
        job.print(reqAttrSet);
        notifyEvent(PrintJobEvent.DATA_TRANSFER_COMPLETE);
        return;
    } catch (PrinterException pe) {
        notifyEvent(PrintJobEvent.JOB_FAILED);
        throw new PrintException(pe);
    } finally {
        printReturned = true;
        notifyEvent(PrintJobEvent.NO_MORE_EVENTS);
    }
}