PrintableComponentpublic class PrintableComponent extends Object implements Printable| This wrapper class encapsulates a Component and allows it to be printed
using the Java 2 printing API. |
| Constructors Summary |
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public PrintableComponent(Component c)Create a PrintableComponent wrapper around a Component this.c = c;
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| Methods Summary |
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| public void | print()This method is not part of the Printable interface. It is a method
that sets up the PrinterJob and initiates the printing.
// Get the PrinterJob object
PrinterJob job = PrinterJob.getPrinterJob();
// Get the default page format, then allow the user to modify it
PageFormat format = job.pageDialog(job.defaultPage());
// Tell the PrinterJob what to print
job.setPrintable(this, format);
// Ask the user to confirm, and then begin the printing process
if (job.printDialog())
job.print();
| | public int | print(java.awt.Graphics g, java.awt.print.PageFormat format, int pagenum)This is the "callback" method that the PrinterJob will invoke.
This method is defined by the Printable interface.
// The PrinterJob will keep trying to print pages until we return
// this value to tell it that it has reached the end.
if (pagenum > 0)
return Printable.NO_SUCH_PAGE;
// We're passed a Graphics object, but it can always be cast to Graphics2D
Graphics2D g2 = (Graphics2D) g;
// Use the top and left margins specified in the PageFormat Note
// that the PageFormat methods are poorly named. They specify
// margins, not the actual imageable area of the printer.
g2.translate(format.getImageableX(), format.getImageableY());
// Tell the component to draw itself to the printer by passing in
// the Graphics2D object. This will not work well if the component
// has double-buffering enabled.
c.paint(g2);
// Return this constant to tell the PrinterJob that we printed the page.
return Printable.PAGE_EXISTS;
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