Java RGB Color Convert To rgbaToHex(String color)

Description

rgba To Hex

License

Apache License

Declaration

public static String rgbaToHex(String color) 

Method Source Code

//package com.java2s;
//License from project: Apache License 

public class Main {
    public static String rgbaToHex(String color) {
        if (isHexColor(color)) {
            return color;
        }/*from   w ww  .jav  a2s.c o m*/
        String f = color.substring("rgba(".length());
        int l = f.lastIndexOf(",");
        if (l == -1) {
            return color;
        }
        String t = f.substring(0, l);
        String[] rgb = t.split(",");
        int r = Integer.parseInt(rgb[0], 10);
        int g = Integer.parseInt(rgb[1], 10);
        int b = Integer.parseInt(rgb[2], 10);

        //LogUtils.log(r+","+g+","+b);
        String rColor = Integer.toHexString(r);
        if (rColor.length() < 2) {
            rColor = "0" + r;
        }
        String gColor = Integer.toHexString(g);
        if (gColor.length() < 2) {
            gColor = "0" + g;
        }
        String bColor = Integer.toHexString(b);
        if (bColor.length() < 2) {
            bColor = "0" + b;
        }
        return "#" + rColor + gColor + bColor;
    }

    public static boolean isHexColor(String text) {
        if (!text.startsWith("#")) {
            return false;
        }

        if (text.length() != 4 && text.length() != 7) {
            return false;
        }

        return true;
    }
}

Related

1. rgb2yuv(float r, float g, float b, float[] yuv)
2. rgb565ToRGB(short pixel, byte[] rgb)
3. rgb8ToPixel(byte[] nrgb)
4. rgb8ToRgbRBXG(byte[] rgb)
5. rgbaToColor(int r, int g, int b, int a)
6. RGBAtoI(byte r, byte g, byte b, byte a)
7. rgbBitfieldToString(int rgb)
8. rgbToBgr(final byte[] pixels)
9. RGBtoBGR(String color)