如何打印单个JPanel的内容？ [英] How can I print a single JPanel's contents?

问题描述

我有一张 JPanel ，带有两个带图片的标签。我需要打印 JPanel 的这些内容。请帮帮我。我怎么才能打印这个 JPanel 的内容，因为我的 JFrame 上也有不同的组件，但我只是需要打印此 JPanel 。

I have a JPanel with two labels with pictures. I need to print these content of the JPanel. Please help me out. How can I print only this JPanel's contents, as I also have different components on my JFrame but I just need to print this JPanel.

谢谢。

推荐答案

以下是打印任何Swing组件的示例。

Here is an example to print any Swing component.

public void printComponenet(Component component){
  PrinterJob pj = PrinterJob.getPrinterJob();
  pj.setJobName(" Print Component ");

  pj.setPrintable (new Printable() {    
    public int print(Graphics pg, PageFormat pf, int pageNum){
      if (pageNum > 0){
      return Printable.NO_SUCH_PAGE;
      }

      Graphics2D g2 = (Graphics2D) pg;
      g2.translate(pf.getImageableX(), pf.getImageableY());
      component.paint(g2);
      return Printable.PAGE_EXISTS;
    }
  });
  if (pj.printDialog() == false)
  return;

  try {
        pj.print();
  } catch (PrinterException ex) {
        // handle exception
  }
}

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