If you need centimeters instead of inches,
multiply each inch value by 2.54 to get the number of centimeters.
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.printing.PrintDialog;
import org.eclipse.swt.printing.Printer;
import org.eclipse.swt.printing.PrinterData;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class MainClass {
public static void main(String[] args) {
Display display = new Display();
Shell shell = new Shell(display);
PrintDialog dlg = new PrintDialog(shell);
dlg.setScope(PrinterData.SELECTION);
PrinterData printerData = dlg.open();
if (printerData != null) {
Printer printer = new Printer(printerData);
System.out.println(printer.getClientArea());
Point dpi = printer.getDPI(); // Get the DPI
Rectangle rect = printer.getClientArea(); // Get the printable area
Rectangle trim = printer.computeTrim(0, 0, 0, 0); // Get the whole page
int left = trim.x + dpi.x; // Set left margin one inch from left side of paper
int top = trim.y + dpi.y; // Set top margin
int right = (rect.width + trim.x + trim.width) - dpi.x; // 1st three
// values give
// you the right side of the page
int bottom = (rect.height + trim.y + trim.height) - dpi.y; // Set bottom
// margin
// use left, top, right, and bottom as the boundaries that govern where
// you draw on the page.
printer.dispose();
}
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) {
display.sleep();
}
}
display.dispose();
}
}