Config.java 文件源码

public PageFormat getPageFormat() {
    PrinterJob job = PrinterJob.getPrinterJob();

    if (myPageFormat == null) {
        myPageFormat = job.defaultPage();

        // restore
        myPageFormat.setOrientation(round(get(PAGE_ORIENTATION, PageFormat.PORTRAIT)));
        Paper paper = myPageFormat.getPaper();

        if (get(PAPER_WIDTH, null) != null && get(PAPER_HEIGHT, null) != null) {
            paper.setSize(get(PAPER_WIDTH, INCH), get(PAPER_HEIGHT, INCH));
        }
        if (get(AREA_X, null) != null && get(AREA_Y, null) != null && get(AREA_WIDTH, null) != null && get(AREA_HEIGHT, null) != null) {
            paper.setImageableArea(get(AREA_X, INCH), get(AREA_Y, INCH), get(AREA_WIDTH, INCH), get(AREA_HEIGHT, INCH));
        }
        myPageFormat.setPaper(paper);
    }
    return myPageFormat;
}