Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.KeyEvent;

import javax.swing.Box;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.KeyStroke;

public class Main extends JPanel {
    private static final Dimension THUMB_SIZE = new Dimension(170, 150);
    private Dimension screen = Toolkit.getDefaultToolkit().getScreenSize();
    private JPanel thumbPanel = new JPanel(new GridLayout(0, 6, 5, 5));

    public Main() {
        JPanel holderPanel = new JPanel(new BorderLayout());
        holderPanel.add(thumbPanel, BorderLayout.NORTH);
        holderPanel.add(Box.createGlue(), BorderLayout.CENTER);

        setLayout(new BorderLayout());
        add(new JScrollPane(holderPanel), BorderLayout.CENTER);
    }

    public JMenuBar createMenuBar() {
        JMenuBar top_menu_bar = new JMenuBar();
        JMenu main_menu = new JMenu("Menu");
        main_menu.setMnemonic(KeyEvent.VK_M);
        top_menu_bar.add(main_menu);
        JMenuItem menu_item;

        menu_item = new JMenuItem("Add New");
        menu_item.setMnemonic(KeyEvent.VK_N);
        menu_item.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_N, ActionEvent.ALT_MASK));
        menu_item.setActionCommand("new");
        menu_item.addActionListener(e -> createThumb());
        main_menu.add(menu_item);
        return top_menu_bar;
    }

    protected void createThumb() {
        JButton thumb = new JButton("Thumb");
        thumb.setPreferredSize(THUMB_SIZE);
        thumbPanel.add(thumb);
        revalidate();
        repaint();
    }

    @Override
    public Dimension getPreferredSize() {
        return new Dimension(screen.width / 10 * 6, screen.height / 10 * 6);
    }

    public static void main(String[] args) {
        Main mainPanel = new Main();
        JFrame f = new JFrame();
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.getContentPane().add(mainPanel);
        f.setJMenuBar(mainPanel.createMenuBar());
        f.pack();
        f.setVisible(true);
    }
}