Java RGB Color Convert To rgbToHex(String color)

Description

rgb To Hex

License

Open Source License

Declaration

private static String rgbToHex(String color) 

Method Source Code

//package com.java2s;
/* /*from   w ww . ja  v  a 2 s.  c o m*/
 * Copyright (C) 2017 Marc Magon
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

public class Main {
    /**
     * Converts a colour to hex i suppose
     */
    private static final String chars = "0123456789ABCDEF";

    private static String rgbToHex(String color) {
        //System.out.println("RGB TO HEX [" + color + "]");
        String[] RGB = color.split(",");
        return toHex(RGB[0]) + toHex(RGB[1]) + toHex(RGB[2]);
    }

    private static String toHex(String color) {
        //System.out.println("TO HEX [" + color + "]");
        //return Integer.toHexString(Integer.parseInt(color));

        //cant do as it truncates the 09 to 9
        //       System.out.println(Integer.toHexString(Integer.parseInt(color)));
        if (color == null) {
            return "00";
        }
        Integer N;
        N = Integer.parseInt(color);
        if (N == 0) {
            return "00";
        }
        N = Math.max(0, N);
        N = Math.min(N, 255);
        N = Math.round(N);
        char s = chars.charAt((N - N % 16) / 16);
        char s1 = chars.charAt(N % 16);
        return "" + s + s1;// "0123456789ABCDEF".charAt((N-N%16)/16)+ "0123456789ABCDEF".charAt(N%16);
    }
}

Related

1. rgbToHex(final int r, final int g, final int b)
2. rgbToHex(int r, int g, int b)
3. RGBtoHex(int r, int g, int b)
4. rgbToHex(int[] rgb)
5. RGBToHex(int[] rgb)
6. RGBtoHSB(int r, int g, int b, float hsbvals[])
7. RGBtoHSB(int r, int g, int b, float[] hsbvals)
8. RGBtoHSB(int red, int green, int blue, float hsb[])
9. rgbToHsl(byte red, byte green, byte blue)