scale any images according to the printer's DPI to fit the page.
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.ImageData;
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);
Image image = new Image(display, "fileName.gif");
ImageData imageData = image.getImageData();
PrintDialog dialog = new PrintDialog(shell, SWT.NULL);
PrinterData printerData = dialog.open();
Printer printer = new Printer(printerData);
Point screenDPI = display.getDPI();
Point printerDPI = printer.getDPI();
int scaleFactor = printerDPI.x / screenDPI.x;
Rectangle trim = printer.computeTrim(0, 0, 0, 0);
if (printer.startJob("fileName")) {
if (printer.startPage()) {
GC gc = new GC(printer);
Image printerImage = new Image(printer, imageData);
// Draw the image
gc.drawImage(printerImage, 0, 0, imageData.width, imageData.height, -trim.x, -trim.y,
scaleFactor * imageData.width, scaleFactor * imageData.height);
// Clean up
printerImage.dispose();
gc.dispose();
printer.endPage();
}
}
// End the job and dispose the printer
printer.endJob();
printer.dispose();
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) {
display.sleep();
}
}
display.dispose();
}
}