在JLabel上创建围绕ImageIcon的边框，而不是在Jlabel周围

Question

我在JLabel中为图标创建边框时遇到问题。我有JPanel，我将其设置为GridLayout。我在JPanel上添加了Jlabel。 JLabel的大小取决于图标的大小。但是，当我尝试在图标上设置边框时，它会根据网格的大小创建边框，而不是网格内图标的大小。

如何围绕图像创建边框而不是网格尺寸？

为什么边框遵循网格的大小而不是imageIcon的大小？

JPanel panel= new JPanel(new GridLayout(ROWS,COLS,2,2)); 
panel.setsize(600,600);

....
JLabel = new JLabel(icon, JLabel.LEFT);
label.setVerticalAlignment(SwingConstants.TOP);
...
label.setborder(BorderFactory.createLineBorder(Color.RED,5));
panel.add(label);

Answer 1

我解决了这个问题。感谢此网站http://forums.oracle.com/forums/thread.jspa?messageID=5785467�

Image image = icon.getImage().getScaledInstance(widthX,heightY, image.SCALE_SMOOTH);            
icon.setImage(image);   

int borderWidth = 1;
int spaceAroundIcon = 0;
Color borderColor = Color.BLUE;

BufferedImage bi = new BufferedImage(icon.getIconWidth() + (2 * borderWidth + 2 * spaceAroundIcon),icon.getIconHeight() + (2 * borderWidth + 2 * spaceAroundIcon), BufferedImage.TYPE_INT_ARGB);

Graphics2D g = bi.createGraphics();
g.setColor(borderColor);
g.drawImage(icon.getImage(), borderWidth + spaceAroundIcon, borderWidth + spaceAroundIcon, null);

BasicStroke stroke = new BasicStroke(5); //5 pixels wide (thickness of the border)
g.setStroke(stroke);

g.drawRect(0, 0, bi.getWidth() - 1, bi.getHeight() - 1);
g.dispose();

label = new JLabel(new ImageIcon(bi), JLabel.LEFT);
label.setVerticalAlignment(SwingConstants.TOP);      

panel.add(label);

Answer 2

使用FlowLayout将标签添加到面板，然后将面板添加到GridLayout面板。