Colors.java

package charts.graphics;

import java.awt.Color;

import org.apache.commons.lang3.StringUtils;
import org.jfree.chart.renderer.category.CategoryItemRenderer;

public class Colors {

    public static final Color LIGHT_PURPLE = fromHex("#A68ED6");
    public static final Color LIGHT_BROWN = fromHex("#BAAF93");
    public static final Color VIOLET = fromHex("#2B3077");
    public static final Color PINK = fromHex("#E84CE3");
    public static final Color YELLOW = fromHex("#FDF117");
    public static final Color BROWN = fromHex("#907F71");
    public static final Color ORANGE = fromHex("#EB8C28");
    public static final Color LIGHT_BLUE = fromHex("#00A4DC");
    public static final Color GREEN = fromHex("#009A4E");
    public static final Color RED = fromHex("#D92129");
    public static final Color GRAY = fromHex("#898C8B");
    public static final Color BLUE = fromHex("#206FAD");
    public static final Color DARK_RED = fromHex("#853806");
    public static final Color LIGHT_RED = fromHex("#FF7C7C");
    public static final Color BLACK = fromHex("#000000");

    public static final Color NOT_EVALUATED = new Color(229,229,229);
    public static final Color VERY_GOOD = new Color(0,118,70);
    public static final Color GOOD = new Color(168,198,162);
    public static final Color MODERATE = new Color(252,203,38);
    public static final Color POOR = new Color(244,141,64);
    public static final Color VERY_POOR = new Color(233,44,48);

    public static Color fromHex(String s) {
        String c = StringUtils.strip(StringUtils.strip(s), "#");
        if(c.length()>=6) {
            int r = Integer.parseInt(StringUtils.substring(c, 0, 2), 16);
            int g = Integer.parseInt(StringUtils.substring(c, 2, 4), 16);
            int b = Integer.parseInt(StringUtils.substring(c, 4, 6), 16);
            int a = 255;
            if(c.length()>=8) {
                a = Integer.parseInt(StringUtils.substring(c, 6, 8), 16);
            }
            return new Color(r,g,b,a);
        } else {
            throw new IllegalArgumentException("unknown color code "+s);
        }
    }

    public static String toHex(Color c) {
      return String.format("#%02X%02X%02X", c.getRed(), c.getGreen(), c.getBlue());
    }

    public static void setSeriesPaint(CategoryItemRenderer renderer,Color[] colors) {
      if(colors != null) {
        for(int i=0;i<colors.length;i++) {
          if(colors[i] != null) {
            renderer.setSeriesPaint(i, colors[i]);
          }
        }
      }
    }
}