MouseTest.java Source code

Introduction

Here is the source code for MouseTest.java

Source

import java.awt.Color;
import java.awt.Graphics;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;

import javax.swing.JFrame;
import javax.swing.JMenuItem;
import javax.swing.JPopupMenu;

public class MouseTest extends JFrame {
    int startX, startY, endX, endY;

    Color color = Color.BLACK;

    public MouseTest() {
        super();

        final JPopupMenu pop = new JPopupMenu();
        pop.add(new JMenuItem("Cut"));
        pop.add(new JMenuItem("Copy"));
        pop.add(new JMenuItem("Paste"));
        pop.addSeparator();
        pop.add(new JMenuItem("Select All"));
        pop.setInvoker(this);

        MouseListener popup = new MouseListener() {
            public void mouseClicked(MouseEvent e) {
            }

            public void mouseEntered(MouseEvent e) {
            }

            public void mouseExited(MouseEvent e) {
            }

            public void mousePressed(MouseEvent e) {
                if (e.isPopupTrigger()) {
                    showPopup(e);
                }
            }

            public void mouseReleased(MouseEvent e) {
                if (e.isPopupTrigger()) {
                    showPopup(e);
                }
            }

            private void showPopup(MouseEvent e) {
                pop.show(e.getComponent(), e.getX(), e.getY());
            }
        };
        addMouseListener(popup);

        MouseListener drawing1 = new MouseListener() {
            public void mouseClicked(MouseEvent e) {
            }

            public void mouseEntered(MouseEvent e) {
            }

            public void mouseExited(MouseEvent e) {
            }

            public void mousePressed(MouseEvent e) {
                color = Color.RED;
                startX = endX = e.getX();
                startY = endY = e.getY();
                repaint();
            }

            public void mouseReleased(MouseEvent e) {
                color = Color.BLACK;
                repaint();
            }
        };
        addMouseListener(drawing1);

        MouseMotionListener drawing2 = new MouseMotionListener() {
            public void mouseDragged(MouseEvent e) {
                endX = e.getX();
                endY = e.getY();
                repaint();
            }

            public void mouseMoved(MouseEvent e) {
            }
        };
        addMouseMotionListener(drawing2);

    }

    public void paint(Graphics g) {
        super.paint(g);
        g.setColor(color);
        g.drawLine(startX, startY, endX, endY);
    }

    public static void main(String args[]) {
        JFrame frame = new MouseTest();
        frame.setSize(300, 300);
        frame.show();
    }
}