private void checkButton(ActionEvent e) {
int lidx = 0;
for (MyButton button : buttons) {
if (button.isLastButton()) {
lidx = buttons.indexOf(button);
}
}
JButton button = (JButton) e.getSource();
int bidx = buttons.indexOf(button);
if ((bidx - 1 == lidx) || (bidx + 1 == lidx) || (bidx - 3 == lidx) || (bidx + 3 == lidx)) {
Collections.swap(buttons, bidx, lidx);
updateButtons();
}
}
private void initUI() {
solution.add(new Point(0, 0));
solution.add(new Point(0, 1));
solution.add(new Point(0, 2));
solution.add(new Point(1, 0));
solution.add(new Point(1, 1));
solution.add(new Point(1, 2));
solution.add(new Point(2, 0));
solution.add(new Point(2, 1));
solution.add(new Point(2, 2));
solution.add(new Point(3, 0));
solution.add(new Point(3, 1));
solution.add(new Point(3, 2));
buttons = new ArrayList<>();
panel = new JPanel();
panel.setBorder(BorderFactory.createLineBorder(Color.gray));
panel.setLayout(new GridLayout(4, 3, 0, 0));
try {
source = loadImage();
int h = getNewHeight(source.getWidth(), source.getHeight());
resized = resizeImage(source, DESIRED_WIDTH, h, BufferedImage.TYPE_INT_ARGB);
} catch (IOException ex) {
Logger.getLogger(PuzzleSample.class.getName()).log(Level.SEVERE, null, ex);
}
width = resized.getWidth(null);
height = resized.getHeight(null);
add(panel, BorderLayout.CENTER);
for (int i = 0; i < 4; i++) {
for (int j = 0; j < 3; j++) {
image =
createImage(
new FilteredImageSource(
resized.getSource(),
new CropImageFilter(j * width / 3, i * height / 4, (width / 3), height / 4)));
MyButton button = new MyButton(image);
button.putClientProperty("position", new Point(i, j));
if (i == 3 && j == 2) {
lastButton = new MyButton();
lastButton.setBorderPainted(false);
lastButton.setContentAreaFilled(false);
lastButton.setLastButton();
lastButton.putClientProperty("position", new Point(i, j));
} else {
buttons.add(button);
}
}
}
Collections.shuffle(buttons);
buttons.add(lastButton);
for (int i = 0; i < 12; i++) {
MyButton btn = buttons.get(i);
panel.add(btn);
btn.setBorder(BorderFactory.createLineBorder(Color.gray));
btn.addActionListener(new ClickAction());
}
pack();
setTitle("Puzzle");
setResizable(false);
setLocationRelativeTo(null);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}