Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.awt.Dimension;
import java.awt.Toolkit;
import java.awt.event.ComponentAdapter;
import java.awt.event.ComponentEvent;

import javax.swing.JFrame;
import javax.swing.JLabel;

public class Main extends ComponentAdapter {

    private boolean locked = false;

    private int sd = 50;

    public void componentMoved(ComponentEvent evt) {
        if (locked)
            return;
        Dimension size = Toolkit.getDefaultToolkit().getScreenSize();
        int nx = evt.getComponent().getX();
        int ny = evt.getComponent().getY();
        // top
        if (ny < 0 + sd) {
            ny = 0;
        }
        // left
        if (nx < 0 + sd) {
            nx = 0;
        }
        // right
        if (nx > size.getWidth() - evt.getComponent().getWidth() - sd) {
            nx = (int) size.getWidth() - evt.getComponent().getWidth();
        }
        // bottom
        if (ny > size.getHeight() - evt.getComponent().getHeight() - sd) {
            ny = (int) size.getHeight() - evt.getComponent().getHeight();
        }
        locked = true;
        evt.getComponent().setLocation(nx, ny);
        locked = false;
    }

    public static void main(String[] args) {
        JFrame frame = new JFrame("");
        JLabel label = new JLabel("Move this window's title bar to demonstrate screen edge snapping.");
        frame.getContentPane().add(label);
        frame.pack();

        frame.addComponentListener(new Main());
        frame.setVisible(true);
    }
}