Color from string for settings etc

Question

This is code to parse a string to color
used 2 of the popular html formats
see code at [url src=http://sel2in.com/pages/prog/java/awt/String_Color_Parser.html]http://sel2in.com/pages/prog/java/awt/String_Color_Parser.html
http://sel2in.com/pages/prog/java/awt/String_Color_Parser.html
Copyright 2008
Contact [email protected] http://sel2in.com
// sel2in.img.dogspa.ImgAdd
package sel2in.awt;
import java.awt.color.*;
import tgk.*;
import java.util.*;
import java.io.*;
import java.awt.*;
import java.awt.image.*;
import java.awt.image.*;
import javax.imageio.*;
import javax.imageio.stream.*;
import static sel2in.img.dogspa.Consts.*;
* Parse a string representing a color (RGB with optional alpha) quite like it is in html.
* @author [email protected] http://sel2in.com Copyright 2008
public class ColorSetHelper
     public static boolean error = false;
     * Try to parse string as a color else return default passed in.
     * @param s String that should be in format
     * A.  #RRGGBB like #3117A1 or
     * #RRGGBBAA #3117A111 where AA is the alpha component. Each part is 0-255 inclusize or throws an error.
     * B. Another format is rgb(r1, g1, b1) like rgb(45,32, 201)
     * or rgba(45,32, 201, 33) where a is alpha 0 means transparent and 255 means opaque
     * Can also use percentages 0% to 100% :-
     * rgb(r1%, g1%, b1%) like rgb(100%,80%, 90%, 50%) values have to be 0% to 100% inclusive decimels are allowed
     * @param defClr Default Color
     public static Color parseColor(String s, Color defClr){
     public static Color parseHashHexa(String s, Color defClr){
          return c;
     * Testing expects one string value
          rgba(255,7,4,5)
     public static void main(String args[]) {
          ColorSetHelper ap = new ColorSetHelper();
          Color c = ap.parseColor(args[0], Color.white);
          u.sl(c + "\ngetAlpha " + c.getAlpha());
}what did to you think ?

Answer 1

no that did not have rgb(100,1,323,100) and rgba(100,1,323,100) type of decleration that my client was used to in html
last param in rgba is alpha
yeah i cut when i edited the post wanted to copy to my page (actually needed to copy the source but anyway)
i wanted to copy it to my web page [http://sel2in.com/pages/prog/java/awt/String_Color_Parser.html|http://sel2in.com/pages/prog/java/awt/String_Color_Parser.html]
Copyright 2008
Contact [email protected] http://sel2in.com
// sel2in.img.dogspa.ImgAdd
package sel2in.awt;
import java.awt.color.*;
import tgk.*;
import java.util.*;
import java.io.*;
import java.awt.*;
import java.awt.image.*;
import java.awt.image.*;
import javax.imageio.*;
import javax.imageio.stream.*;
import static sel2in.img.dogspa.Consts.*;
* Parse a string representing a color (RGB with optional alpha) quite like it is in html.
* @author [email protected] http://sel2in.com Copyright 2008
public class ColorSetHelper
     * Indicates if last call resulted in error - as the functions dont throw and error and instead return the default
     * This variable is rest at start of every function call. not thread safe.
     public static boolean error = false;
     * Try to parse string as a color else return default passed in.
     * @param s String that should be in format
     * A.  #RRGGBB like #3117A1 or
     * #RRGGBBAA #3117A111 where AA is the alpha component. Each part is 0-255 inclusize or throws an error.
     * B. Another format is rgb(r1, g1, b1) like rgb(45,32, 201)
     * or rgba(45,32, 201, 33) where a is alpha 0 means transparent and 255 means opaque
     * Can also use percentages 0% to 100% :-
     * rgb(r1%, g1%, b1%) like rgb(100%,80%, 90%, 50%) values have to be 0% to 100% inclusive decimels are allowed
     * @param defClr Default Color
     public static Color parseColor(String s, Color defClr){
          error = false;
          if(s==null || s.length() < 3)return null;
          if(s.charAt(0) == '#'){
               return parseHashHexa(s, defClr);
          StringTokenizer st = new StringTokenizer(s, " ,()");
          //rgba(1,4,2,4)
          String typ = "rgb";
          //boolean alpha = false;//not used works well with both
          if(st.hasMoreTokens()) typ = st.nextToken();
          //if(typ.endsWith("a"))alpha = true;
          int r = 0, g = 0, b = 0 , a = 255;
          Color c = defClr;
          try{
               if(st.hasMoreTokens()){
                    s = st.nextToken();
                    if(s.endsWith("%")){///**/""
                         s = s.substring(0, s.length() -1);
                         r = (int)(Integer.parseInt(s) * 255 / 100);
                    }else{
                         r = Integer.parseInt(s);
                    if(st.hasMoreTokens()){
                         s = st.nextToken();
                         if(s.endsWith("%")){
                              s = s.substring(0, s.length() -1);
                              g = (int)(Integer.parseInt(s) * 255 / 100);
                         }else{
                              g = Integer.parseInt(s);
                         if(st.hasMoreTokens()){
                              s = st.nextToken();
                              if(s.endsWith("%")){
                                   s = s.substring(0, s.length() -1);
                                   b = (int)(Integer.parseInt(s) * 255 / 100);
                              }else{
                                   b = Integer.parseInt(s);
                              if(st.hasMoreTokens()){
                                   s = st.nextToken();
                                   if(s.endsWith("%")){
                                        s = s.substring(0, s.length() -1);
                                        a = (int)(Integer.parseInt(s) * 255 / 100);
                                   }else{
                                        a = Integer.parseInt(s);
          }catch(Throwable e){
               u.sl(e, e);
               error = true;
          try{
               c = new Color(r, g, b, a);
          }catch(Throwable e){
               error = true;
               u.sl(e, e);
          return c;
     public static Color parseHashHexa(String s, Color defClr){
          error = false;
          int r = 0, g = 0, b = 0 , a = 255;
          Color c = defClr;
          try{
               r = Integer.parseInt(s.substring(1,3), 16);
               g = Integer.parseInt(s.substring(3,5), 16);
               b = Integer.parseInt(s.substring(5,7), 16);
               if(s.length() > 7)a = Integer.parseInt(s.substring(7, 9), 16);
          }catch(Throwable e){
               error = true;
               u.sl(e, e);
          }finally{
               try{
                    c = new Color(r, g, b, a);
               }catch(Throwable e){
                    error = true;
                    u.sl(e, e);
          return c;
     * Testing expects one string value
          rgba(255,7,4,5)
     public static void main(String args[]) {
          ColorSetHelper ap = new ColorSetHelper();
          Color c = ap.parseColor(args[0], Color.white);
          u.sl(c + "\ngetAlpha " + c.getAlpha());
}