如何给ImageIcon着色 [英] How to tint an ImageIcon

问题描述

我如何将通过此处的图标着色为其他颜色?假设我想拍摄一张白色的图像并使它更暗.我已经研究了BufferedImages之类的东西，但是似乎找不到适合我所使用的设置的任何东西.我还应该注意，如果有区别，我会将图像绘制到JLabel上.

How would I tint the icon that is passed through here to be a different color? Say I wanted to take a white image and make it a bit darker. I have looked into BufferedImages and such but I can't seem to find anything that will fit into the setup that I am using. I should also note that I am drawing the images onto a JLabel if that makes a difference.

这是我正在使用的来源，以便您可以了解我正在使用的工具.

Here is the source that I am using so that you can get an idea as to what I am working with.

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;
    }
}

推荐答案

您需要创建一个新的BufferedImage才能将其转换为:

you need to create a new BufferedImage to make the transform into:

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;
}

这篇关于如何给ImageIcon着色的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！