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copied!<p>Instead of adding the <code>MouseListener</code> to the scrollpane, try adding it to the scroll pane's view component (ie, the thing that the scroll pane is displaying)</p> <p>The image in this example is 2560x1600</p> <p><img src="https://i.stack.imgur.com/rhKLz.png" alt="enter image description here"></p> <pre><code>import java.awt.BorderLayout; import java.awt.Color; import java.awt.Dimension; import java.awt.EventQueue; import java.awt.FontMetrics; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Point; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import java.awt.image.BufferedImage; import java.io.File; import java.io.IOException; import javax.imageio.ImageIO; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.UIManager; import javax.swing.UnsupportedLookAndFeelException; public class TestScrollPanePos { public static void main(String[] args) { new TestScrollPanePos(); } public TestScrollPanePos() { EventQueue.invokeLater(new Runnable() { @Override public void run() { try { UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName()); } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) { } JFrame frame = new JFrame("Testing"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setLayout(new BorderLayout()); frame.add(new JScrollPane(new TestPane())); frame.setSize(400, 400); frame.setLocationRelativeTo(null); frame.setVisible(true); } }); } public class TestPane extends JPanel { private BufferedImage bg; private Point point; public TestPane() { try { bg = ImageIO.read(new File("/path/to/image)); } catch (IOException ex) { ex.printStackTrace(); } addMouseMotionListener(new MouseAdapter() { @Override public void mouseMoved(MouseEvent e) { System.out.println(e.getPoint()); point = e.getPoint(); repaint(); } }); } @Override public Dimension getPreferredSize() { return bg == null ? new Dimension(200, 200) : new Dimension(bg.getWidth(), bg.getHeight()); } @Override protected void paintComponent(Graphics g) { super.paintComponent(g); if (bg != null) { Graphics2D g2d = (Graphics2D) g.create(); int x = (getWidth() - bg.getWidth()) / 2; int y = (getHeight()- bg.getHeight()) / 2; g2d.drawImage(bg, x, y, this); if (point != null) { FontMetrics fm = g2d.getFontMetrics(); g2d.setColor(Color.BLACK); g2d.drawString(point.x + "x" + point.y, point.x, point.y - fm.getHeight() + fm.getAscent()); } g2d.dispose(); } } } } </code></pre>

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