TratadorDeImagens.java 文件源码

public static Image makeColorTransparent(Image im, final Color color) {
    //(C)
    //Copiado da internet: 13/02/2011 - http://www.rgagnon.com/javadetails/java-0265.html e http://www.coderanch.com/t/331731/GUI/java/Resize-ImageIcon
    //

    ImageFilter filter = new RGBImageFilter() {
        // the color we are looking for... Alpha bits are set to opaque

        public int markerRGB = color.getRGB() | 0xFF000000;

        @Override
        public final int filterRGB(int x, int y, int rgb) {
            if ((rgb | 0xFF000000) == markerRGB) {
                // Mark the alpha bits as zero - transparent
                return 0x00FFFFFF & rgb;
            } else {
                // nothing to do
                return rgb;
            }
        }
    };

    ImageProducer ip = new FilteredImageSource(im.getSource(), filter);
    return Toolkit.getDefaultToolkit().createImage(ip);
}