Simplest SWT Print Example
/**
* Class: Example1
* <p>
*
* @author Jean-Pierre Dube <jpdube@videotron.ca>
* @version 1.0
* @since 1.0
* @see Printable
*/
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.geom.Line2D;
import java.awt.print.PageFormat;
import java.awt.print.Printable;
import java.awt.print.PrinterJob;
public class JavaWorldPrintExample1 implements Printable {
public static void main(String[] args) {
JavaWorldPrintExample1 example1 = new JavaWorldPrintExample1();
System.exit(0);
}
//--- Private instances declarations
private final double INCH = 72;
/**
* Constructor: Example1
* <p>
*
*/
public JavaWorldPrintExample1() {
//--- Create a printerJob object
PrinterJob printJob = PrinterJob.getPrinterJob();
//--- Set the printable class to this one since we
//--- are implementing the Printable interface
printJob.setPrintable(this);
//--- Show a print dialog to the user. If the user
//--- click the print button, then print otherwise
//--- cancel the print job
if (printJob.printDialog()) {
try {
printJob.print();
} catch (Exception PrintException) {
PrintException.printStackTrace();
}
}
}
/**
* Method: print
* <p>
*
* This class is responsible for rendering a page using the provided
* parameters. The result will be a grid where each cell will be half an
* inch by half an inch.
*
* @param g
* a value of type Graphics
* @param pageFormat
* a value of type PageFormat
* @param page
* a value of type int
* @return a value of type int
*/
public int print(Graphics g, PageFormat pageFormat, int page) {
int i;
Graphics2D g2d;
Line2D.Double line = new Line2D.Double();
//--- Validate the page number, we only print the first page
if (page == 0) {
//--- Create a graphic2D object a set the default parameters
g2d = (Graphics2D) g;
g2d.setColor(Color.black);
//--- Translate the origin to be (0,0)
g2d.translate(pageFormat.getImageableX(), pageFormat
.getImageableY());
//--- Print the vertical lines
for (i = 0; i < pageFormat.getWidth(); i += INCH / 2) {
line.setLine(i, 0, i, pageFormat.getHeight());
g2d.draw(line);
}
//--- Print the horizontal lines
for (i = 0; i < pageFormat.getHeight(); i += INCH / 2) {
line.setLine(0, i, pageFormat.getWidth(), i);
g2d.draw(line);
}
return (PAGE_EXISTS);
} else
return (NO_SUCH_PAGE);
}
} //Example1
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