java - 如何给 ImageIcon 着色

Question

这个问题已经有答案了:

How to draw a BufferedImage with a color tint (1 个回答)

已关闭 8 年前。

如何将通过此处的图标着色为不同的颜色？假设我想拍摄一张白色图像并将其调暗一点。我已经研究过 BufferedImages 等，但我似乎找不到任何适合我正在使用的设置的东西。我还应该注意，如果这会产生影响，我会将图像绘制到 JLabel 上。

这是我正在使用的来源，以便您可以了解我正在使用的内容。

public class Icon extends ImageIcon{

    private int scale = 1;
    private boolean mirror = false;

    public Icon(URL url) throws IOException{
        super(ImageIO.read(url));
    }

    public void setScale(int scale){
        this.scale = scale;
    }

    @Override
    public synchronized void paintIcon(Component c, Graphics g, int x, int y) {
        Graphics2D g2 = (Graphics2D)g.create();
        int height = 0, width = this.getIconWidth(), x1 = 1;
        if(mirror || scale != 1){
            height = -this.getIconHeight();
        }
        if(mirror){
            x1 = -1;
        }else{
            width = 0;
        }
        g2.translate(width * scale, height);
        g2.scale(x1 * scale, 1 * scale);
        super.paintIcon(c, g2, x, y);
    }

    public boolean isMirror() {
        return mirror;
    }    

    public void setMirror(boolean mirror) {
        this.mirror = mirror;
    }
}

Answer 1

您需要创建一个新的 BufferedImage 来进行转换:

public BufferedImage colorImage(BufferedImage loadImg, int red, int green, int blue) {
    BufferedImage img = new BufferedImage(loadImg.getWidth(), loadImg.getHeight(),
        BufferedImage.TRANSLUCENT);
    Graphics2D graphics = img.createGraphics(); 
    Color newColor = new Color(red, green, blue, 0 /* alpha needs to be zero */);
    graphics.setXORMode(newColor);
    graphics.drawImage(loadImg, null, 0, 0);
    graphics.dispose();
    return img;
}