import org.eclipse.swt.graphics.GC;

import org.eclipse.swt.custom.ScrolledComposite;

import org.eclipse.swt.events.ControlAdapter;

import org.eclipse.swt.events.ControlEvent;

import org.eclipse.swt.events.PaintEvent;

import org.eclipse.swt.events.PaintListener;

		final Canvas canvas = new Canvas(composite, SWT.NO_BACKGROUND | SWT.NO_REDRAW_RESIZE | SWT.V_SCROLL

		final ScrolledComposite scrolledComposite = new ScrolledComposite(composite, SWT.H_SCROLL | SWT.V_SCROLL

				| SWT.H_SCROLL | SWT.BORDER);

				| SWT.BORDER);

		canvas.setLayoutData(new GridData(GridData.FILL_BOTH));

		scrolledComposite.setLayoutData(GridDataFactory.fillDefaults().grab(true, true).create());

		scrolledComposite.setExpandHorizontal(true);

		// Adapted from snippit 48

		scrolledComposite.setExpandVertical(true);

		// http://dev.eclipse.org/viewcvs/index.cgi/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet48.java?rev=HEAD

		final Point origin = new Point(0, 0);

		Composite canvasComposite = new Composite(scrolledComposite, SWT.NONE);

		final ScrollBar hBar = canvas.getHorizontalBar();

		canvasComposite.setLayout(GridLayoutFactory.fillDefaults().create());

		hBar.addListener(SWT.Selection, new Listener() {

		Canvas canvas = new Canvas(canvasComposite, SWT.NONE);

			public void handleEvent(Event e) {

		final Rectangle imgSize = image.getBounds();

				int hSelection = hBar.getSelection();

		canvas.setLayoutData(GridDataFactory.fillDefaults().align(SWT.CENTER, SWT.CENTER).grab(true, true).hint(

				int destX = -hSelection - origin.x;

				imgSize.width, imgSize.height).create());

				Rectangle rect = image.getBounds();

		canvas.addPaintListener(new PaintListener() {

				canvas.scroll(destX, 0, 0, 0, rect.width, rect.height, false);

				origin.x = -hSelection;

			public void paintControl(PaintEvent e) {

			}

				e.gc.drawImage(image, 0, 0);

		});

		final ScrollBar vBar = canvas.getVerticalBar();

		vBar.addListener(SWT.Selection, new Listener() {

			public void handleEvent(Event e) {

				int vSelection = vBar.getSelection();

				int destY = -vSelection - origin.y;

				Rectangle rect = image.getBounds();

				canvas.scroll(0, destY, 0, 0, rect.width, rect.height, false);

				origin.y = -vSelection;

			}

		});

		canvas.addListener(SWT.Resize, new Listener() {

			public void handleEvent(Event e) {

				Rectangle rect = image.getBounds();

				Rectangle client = canvas.getClientArea();

				hBar.setMaximum(rect.width);

				vBar.setMaximum(rect.height);

				hBar.setThumb(Math.min(rect.width, client.width));

				vBar.setThumb(Math.min(rect.height, client.height));

				int hPage = rect.width - client.width;

				int vPage = rect.height - client.height;

				int hSelection = hBar.getSelection();

				int vSelection = vBar.getSelection();

				if (hSelection >= hPage) {

					if (hPage <= 0)

						hSelection = 0;

					origin.x = -hSelection;

				}

				if (vSelection >= vPage) {

					if (vPage <= 0)

						vSelection = 0;

					origin.y = -vSelection;

				}

				canvas.redraw();

		canvas.addListener(SWT.Paint, new Listener() {

		canvas.setSize(imgSize.width, imgSize.height);

			public void handleEvent(Event e) {

		scrolledComposite.setMinSize(imgSize.width, imgSize.height);

				GC gc = e.gc;

		scrolledComposite.setContent(canvasComposite);

				gc.drawImage(image, origin.x, origin.y);

		scrolledComposite.addControlListener(new ControlAdapter() {

				Rectangle rect = image.getBounds();

				Rectangle client = canvas.getClientArea();

			@Override

				int marginWidth = client.width - rect.width;

			public void controlResized(ControlEvent e) {

				if (marginWidth > 0) {

				Rectangle clientArea = scrolledComposite.getClientArea();

					gc.fillRectangle(rect.width, 0, marginWidth, client.height);

				}

				ScrollBar hBar = scrolledComposite.getHorizontalBar();

				int marginHeight = client.height - rect.height;

				hBar.setMinimum(1);

				if (marginHeight > 0) {

				hBar.setMaximum(clientArea.width - imgSize.width);

					gc.fillRectangle(0, rect.height, client.width, marginHeight);

				hBar.setPageIncrement(hBar.getThumb());

				}

				hBar.setIncrement(10);

				ScrollBar vBar = scrolledComposite.getVerticalBar();

				vBar.setMinimum(0);

				vBar.setMaximum(clientArea.height - imgSize.height);

				vBar.setPageIncrement(vBar.getThumb());

				vBar.setIncrement(10);