color.java

package quickutils.core.categories;

/**
 * Created by cesarferreira on 19/02/15.
 */
public class color {

    /**
     * @param originalColor color, without alpha
     * @param alpha         from 0.0 to 1.0
     * @return
     */
    public static String addAlpha(String originalColor, double alpha) {
        long alphaFixed = Math.round(alpha * 255);
        String alphaHex = Long.toHexString(alphaFixed);
        if (alphaHex.length() == 1) {
            alphaHex = "0" + alphaHex;
        }
        originalColor = originalColor.replace("#", "#" + alphaHex);


        return originalColor;
    }
}