Java 调整imaget的大小以缩小其所在的面板/标签

我已经能够使字体与组件的大小成比例，但是，我似乎不知道如何使图像比例。我的程序的工作方式是将组件添加到arrayList，然后在最后设置每个组件的边界。我尝试了这一版本，但无法使其正常工作：

public class ImagePanel extends JPanel implements Updater{
    BufferedImage resizer;
    private int width;
    private int height;
    private JLabel picLabel;
    private BufferedImage myPicture;
    /**
     * Searches for the image in the specified location and sets the background of the ImagePanel to the specified color.
     * @param location
     * @param bGColor
     */
    public ImagePanel(String location, Color bGColor)
    {

        myPicture = null;
        this.setLayout(new BorderLayout());
        try {
            // TODO make it use the string.
            myPicture = ImageIO.read(new File("images/logo-actavis.png"));
        } catch (IOException e) {
            e.printStackTrace();
        }
        picLabel = new JLabel(new ImageIcon(myPicture));
        add(picLabel,BorderLayout.CENTER);
         this.addComponentListener(new ComponentAdapter() {
                @Override
                /**
                 *  Makes it so it does not stretch out text. Resizes the fonts to scale with the screen width..
                 */
                public void componentResized(ComponentEvent e) {
                    if(picLabel.getHeight()!=0&&picLabel.getWidth()!=0)
                     {
                      width = picLabel.getWidth();
                      height = picLabel.getHeight();
                      myPicture=resize(myPicture, width, height);
                     }

                }
            });


        this.setBackground(bGColor);
    }
    public static BufferedImage resize(BufferedImage image, int width, int height) {
        BufferedImage bi = new BufferedImage(width, height, BufferedImage.TRANSLUCENT);
        Graphics2D g2d = (Graphics2D) bi.createGraphics();
        g2d.addRenderingHints(new RenderingHints(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY));
        g2d.drawImage(image, 0, 0, width, height, null);
        g2d.dispose();
        return bi;
    }
}

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您可以使用该方法从原始图像获取缩放图像

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public Image getScaledInstance（int-width、int-height、int-hints）

而不是使用图像图标。你可以用Darryl的

图标将根据标签的可用空间自动缩放。您可以按比例缩放图像，也可以让图像填充整个空间。

最后这样做：

     this.addComponentListener(new ComponentAdapter() {
            @Override
            /**
             *  Makes it so it does not stretch out text. Resizes the fonts to scale with the screen width..
             */
            public void componentResized(ComponentEvent e) {
                Double width = (double) e.getComponent().getWidth();
                Double height = (double) e.getComponent().getHeight();
                double scalingFactor=Math.min(width/originalWidth, height/originalHeight)*.7;
                myPicture = myPicture.getScaledInstance((int)(originalWidth*(scalingFactor)),(int) (originalHeight*(scalingFactor)), Image.SCALE_SMOOTH);
                picLabel = new JLabel(new ImageIcon(myPicture));
                add(picLabel,BorderLayout.CENTER);

            }
     });

其中，原始高度/宽度是原始图片的纵横比。我将scalingFactor乘以.7，因为我不希望它填满整个面板