Getting mouse coordinates every time mouse moves

Question

So i have this code, however i dont get it how to set the mouse coordinates to the label every time the mouse moves ...

timer.schedule(new TimerTask() { @Override public void run() { int mouseX = MouseInfo.getPointerInfo().getLocation().x; int mouseY = MouseInfo.getPointerInfo().getLocation().y; lblInfo.setText("Nada "+mouseX+mouseY); } }, 1);

Im not even sure if the code is right but what i want it to do is to get the mouse coordinates in the label called lblInfo every time the mouse moves.

This code what does is only display it once whenever the program starts...

How often is the run() method executed? Add a println() to see. — NormR
– NormR, Commented Feb 16, 2014 at 13:07

Salah · Accepted Answer · 2014-02-16 12:48:43Z

2

You need to implements MouseMotionListener, then add your logic inside mouseMoved method like:

public class MyClass implements MouseMotionListener { public void mouseMoved(MouseEvent e) { System.out.println("X : " + e.getX()); System.out.println("Y : " + e.getY()); } public void mouseDragged(MouseEvent e) { //do something } }

4 Comments

Alpha2k Over a year ago

Thats the problem, i have extends MouseAdapter which inherits MouseMotionListener (if i remember correctly) , but how do i tell it to set coordinates every time the mouse moves. I can get the coordinates every time the mouse is pressed inside a JPanel for example, but not everywhere on screen. I am using mouseClicked and it works fine... But cant manage to find the right event to make it update the coordinates every time the mouse moves, and mouse Moved doesnt seem to work omg...

Alpha2k Over a year ago

public void mouseMoved(MouseEvent e){ int mouseX = e.getX(); int mouseY = e.getY(); System.out.println("Test Info: "+mouseX+" "+mouseY); igu.lblInfo.setText("Test Info: "+mouseX+" "+mouseY); }

Alpha2k Over a year ago

docs.oracle.com/javase/7/docs/api/java/awt/event/… ,mouseMoved does not do this "Invoked when the mouse cursor has been moved onto a component but no buttons have been pushed." and i dont know why...

Alpha2k Over a year ago

doh nvm im dumb xD in stead of adding addMouseMotionListener(); i used addMouseListener(); Thanks for the help :D

Paul Samsotha · Accepted Answer · 2014-02-16 13:43:45Z

Have a look at this example. You first need to implement mousePresseded then mouseDragged. The first to get the point of the initial press, then the mouseDragged will use those coordinates.

addMouseListener(new MouseAdapter() { public void mousePressed(MouseEvent me) { // Get x,y and store them pX = me.getX(); pY = me.getY(); } }); addMouseMotionListener(new MouseAdapter() { public void mouseDragged(MouseEvent me) { frame.setLocation(frame.getLocation().x + me.getX() - pX, frame.getLocation().y + me.getY() - pY); } });

Complete running example. It uses an undecorate frame and create a JPanel as the header, that you can drag to move the frame.

import java.awt.*; import java.awt.event.*; import javax.swing.*; import javax.swing.border.LineBorder; public class UndecoratedExample { static JFrame frame = new JFrame(); static class MainPanel extends JPanel { public MainPanel() { setBackground(Color.gray); } @Override public Dimension getPreferredSize() { return new Dimension(400, 400); } } static class BorderPanel extends JPanel { JLabel stackLabel; int pX, pY; public BorderPanel() { ImageIcon icon = new ImageIcon(getClass().getResource( "/resources/stackoverflow1.png")); stackLabel = new JLabel(); stackLabel.setIcon(icon); setBackground(Color.black); setLayout(new FlowLayout(FlowLayout.RIGHT)); add(stackLabel); stackLabel.addMouseListener(new MouseAdapter() { public void mouseReleased(MouseEvent e) { System.exit(0); } }); addMouseListener(new MouseAdapter() { public void mousePressed(MouseEvent me) { // Get x,y and store them pX = me.getX(); pY = me.getY(); } }); addMouseMotionListener(new MouseAdapter() { public void mouseDragged(MouseEvent me) { frame.setLocation(frame.getLocation().x + me.getX() - pX, frame.getLocation().y + me.getY() - pY); } }); } } static class OutsidePanel extends JPanel { public OutsidePanel() { setLayout(new BorderLayout()); add(new MainPanel(), BorderLayout.CENTER); add(new BorderPanel(), BorderLayout.PAGE_START); setBorder(new LineBorder(Color.BLACK, 5)); } } public static void main(String[] args) { SwingUtilities.invokeLater(new Runnable() { public void run() { frame.setUndecorated(true); frame.add(new OutsidePanel()); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.pack(); frame.setLocationRelativeTo(null); frame.setVisible(true); } }); } }

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