java 如何在 JLabel 中调整 Image/IconImage 的大小？
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时间：2020-10-30 19:02:31 来源:igfitidea点击:
How to resize Image/IconImage in JLabel?
提问by Tushar Chutani
Here's my code:
这是我的代码：
String s = "/Applications/Asphalt6.app";
JFileChooser chooser = new JFileChooser();
File file = new File(s);
Icon icon = chooser.getIcon(file);
// show the icon
JLabel ficon = new JLabel(s, icon, SwingConstants.LEFT);
Now, the image extracted from the icon is really small. How can I resize it?
现在，从图标中提取的图像非常小。我怎样才能调整它的大小？
回答by Andrew Thompson
import java.awt.*;
import java.awt.image.*;
import javax.swing.*;
import java.io.*;
class BigIcon {
public static void main(String[] args) {
JFileChooser chooser = new JFileChooser();
File f = new File("BigIcon.java");
Icon icon = chooser.getIcon(f);
int scale = 4;
BufferedImage bi = new BufferedImage(
scale*icon.getIconWidth(),
scale*icon.getIconHeight(),
BufferedImage.TYPE_INT_ARGB);
Graphics2D g = bi.createGraphics();
g.scale(scale,scale);
icon.paintIcon(null,g,0,0);
g.dispose();
JOptionPane.showMessageDialog(
null,
new JLabel(new ImageIcon(bi)));
}
}
