@Override
protected void paintComponent(Graphics g) {
// Image
Dimension size = getSize();
if (img != null) {
Dimension imgSize = new Dimension(img.getWidth(null), img.getHeight(null));
SwingUtil.constrainTo(imgSize, size.width, size.height);
// Border
int x = (size.width - imgSize.width) / 2;
int y = (size.height - imgSize.height) / 2;
g.drawImage(img, x, y, imgSize.width, imgSize.height, null);
g.setColor(Color.black);
g.drawRect(x, y, imgSize.width - 1, imgSize.height - 1);
}
}
