MainClass.java Source code

Introduction

Here is the source code for MainClass.java

Source

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();
    }
}