RGB值转换为int值 [英] RGB value convert to int value

问题描述

我想写函数将RGB值转换为int值，但现在我发现有时颜色显示红色或绿色直接不像＃F2E906所以我关于处理颜色值的funthion可能有一些问题，我需要一些救命。我不知道红色和＃ff0000相同。如果我们需要用特殊的方法处理它，如果红色转到函数，那么函数处理像＃F2E906这样的值？

I want to write function to convert a RGB value to int value, but now i find sometimes the color display Red or Green directly not like #F2E906 so my funthion about dealing with the color value maybe has some issue,i need some help. I don't know red is same as #ff0000.becasue the function is deal with the value like #F2E906 if the red go to the function if we need to deal it with a special method?

推荐答案

要将像这样的字符串解析成颜色，你需要一个现有的库或手动滚动你自己的转换。



这样的东西可能为你做的伎俩;

To parse a string like that into a colour you either need an existing library or hand roll your own conversions.

Something like this might do the trick for you;

import java.io.*;
import java.util.*;



public class Program {


    private final Map<String, Integer> NAMED_COLORS = new HashMap<String, Integer>();

    public Program() {
        NAMED_COLORS.put("aliceblue",0xF0F8FF);
        NAMED_COLORS.put("antiquewhite",0xFAEBD7);
        NAMED_COLORS.put("aqua",0x00FFFF);
        NAMED_COLORS.put("aquamarine",0x7FFFD4);
        NAMED_COLORS.put("azure",0xF0FFFF);
        NAMED_COLORS.put("beige",0xF5F5DC);
        NAMED_COLORS.put("bisque",0xFFE4C4);
        NAMED_COLORS.put("black",0x000000);
        NAMED_COLORS.put("blanchedalmond",0xFFEBCD);
        NAMED_COLORS.put("blue",0x0000FF);
        NAMED_COLORS.put("blueviolet",0x8A2BE2);
        NAMED_COLORS.put("brown",0xA52A2A);
        NAMED_COLORS.put("burlywood",0xDEB887);
        NAMED_COLORS.put("cadetblue",0x5F9EA0);
        NAMED_COLORS.put("chartreuse",0x7FFF00);
        NAMED_COLORS.put("chocolate",0xD2691E);
        NAMED_COLORS.put("coral",0xFF7F50);
        NAMED_COLORS.put("cornflowerblue",0x6495ED);
        NAMED_COLORS.put("cornsilk",0xFFF8DC);
        NAMED_COLORS.put("crimson",0xDC143C);
        NAMED_COLORS.put("cyan",0x00FFFF);
        NAMED_COLORS.put("darkblue",0x00008B);
        NAMED_COLORS.put("darkcyan",0x008B8B);
        NAMED_COLORS.put("darkgoldenrod",0xB8860B);
        NAMED_COLORS.put("darkgray",0xA9A9A9);
        NAMED_COLORS.put("darkgreen",0x006400);
        NAMED_COLORS.put("darkkhaki",0xBDB76B);
        NAMED_COLORS.put("darkmagenta",0x8B008B);
        NAMED_COLORS.put("darkolivegreen",0x556B2F);
        NAMED_COLORS.put("darkorange",0xFF8C00);
        NAMED_COLORS.put("darkorchid",0x9932CC);
        NAMED_COLORS.put("darkred",0x8B0000);
        NAMED_COLORS.put("darksalmon",0xE9967A);
        NAMED_COLORS.put("darkseagreen",0x8FBC8F);
        NAMED_COLORS.put("darkslateblue",0x483D8B);
        NAMED_COLORS.put("darkslategray",0x2F4F4F);
        NAMED_COLORS.put("darkturquoise",0x00CED1);
        NAMED_COLORS.put("darkviolet",0x9400D3);
        NAMED_COLORS.put("deeppink",0xFF1493);
        NAMED_COLORS.put("deepskyblue",0x00BFFF);
        NAMED_COLORS.put("dimgray",0x696969);
        NAMED_COLORS.put("dodgerblue",0x1E90FF);
        NAMED_COLORS.put("firebrick",0xB22222);
        NAMED_COLORS.put("floralwhite",0xFFFAF0);
        NAMED_COLORS.put("forestgreen",0x228B22);
        NAMED_COLORS.put("fuchsia",0xFF00FF);
        NAMED_COLORS.put("gainsboro",0xDCDCDC);
        NAMED_COLORS.put("ghostwhite",0xF8F8FF);
        NAMED_COLORS.put("gold",0xFFD700);
        NAMED_COLORS.put("goldenrod",0xDAA520);
        NAMED_COLORS.put("gray",0x808080);
        NAMED_COLORS.put("green",0x008000);
        NAMED_COLORS.put("greenyellow",0xADFF2F);
        NAMED_COLORS.put("honeydew",0xF0FFF0);
        NAMED_COLORS.put("hotpink",0xFF69B4);
        NAMED_COLORS.put("indianred ",0xCD5C5C);
        NAMED_COLORS.put("indigo ",0x4B0082);
        NAMED_COLORS.put("ivory",0xFFFFF0);
        NAMED_COLORS.put("khaki",0xF0E68C);
        NAMED_COLORS.put("lavender",0xE6E6FA);
        NAMED_COLORS.put("lavenderblush",0xFFF0F5);
        NAMED_COLORS.put("lawngreen",0x7CFC00);
        NAMED_COLORS.put("lemonchiffon",0xFFFACD);
        NAMED_COLORS.put("lightblue",0xADD8E6);
        NAMED_COLORS.put("lightcoral",0xF08080);
        NAMED_COLORS.put("lightcyan",0xE0FFFF);
        NAMED_COLORS.put("lightgoldenrodyellow",0xFAFAD2);
        NAMED_COLORS.put("lightgray",0xD3D3D3);
        NAMED_COLORS.put("lightgreen",0x90EE90);
        NAMED_COLORS.put("lightpink",0xFFB6C1);
        NAMED_COLORS.put("lightsalmon",0xFFA07A);
        NAMED_COLORS.put("lightseagreen",0x20B2AA);
        NAMED_COLORS.put("lightskyblue",0x87CEFA);
        NAMED_COLORS.put("lightslategray",0x778899);
        NAMED_COLORS.put("lightsteelblue",0xB0C4DE);
        NAMED_COLORS.put("lightyellow",0xFFFFE0);
        NAMED_COLORS.put("lime",0x00FF00);
        NAMED_COLORS.put("limegreen",0x32CD32);
        NAMED_COLORS.put("linen",0xFAF0E6);
        NAMED_COLORS.put("magenta",0xFF00FF);
        NAMED_COLORS.put("maroon",0x800000);
        NAMED_COLORS.put("mediumaquamarine",0x66CDAA);
        NAMED_COLORS.put("mediumblue",0x0000CD);
        NAMED_COLORS.put("mediumorchid",0xBA55D3);
        NAMED_COLORS.put("mediumpurple",0x9370DB);
        NAMED_COLORS.put("mediumseagreen",0x3CB371);
        NAMED_COLORS.put("mediumslateblue",0x7B68EE);
        NAMED_COLORS.put("mediumspringgreen",0x00FA9A);
        NAMED_COLORS.put("mediumturquoise",0x48D1CC);
        NAMED_COLORS.put("mediumvioletred",0xC71585);
        NAMED_COLORS.put("midnightblue",0x191970);
        NAMED_COLORS.put("mintcream",0xF5FFFA);
        NAMED_COLORS.put("mistyrose",0xFFE4E1);
        NAMED_COLORS.put("moccasin",0xFFE4B5);
        NAMED_COLORS.put("navajowhite",0xFFDEAD);
        NAMED_COLORS.put("navy",0x000080);
        NAMED_COLORS.put("oldlace",0xFDF5E6);
        NAMED_COLORS.put("olive",0x808000);
        NAMED_COLORS.put("olivedrab",0x6B8E23);
        NAMED_COLORS.put("orange",0xFFA500);
        NAMED_COLORS.put("orangered",0xFF4500);
        NAMED_COLORS.put("orchid",0xDA70D6);
        NAMED_COLORS.put("palegoldenrod",0xEEE8AA);
        NAMED_COLORS.put("palegreen",0x98FB98);
        NAMED_COLORS.put("paleturquoise",0xAFEEEE);
        NAMED_COLORS.put("palevioletred",0xDB7093);
        NAMED_COLORS.put("papayawhip",0xFFEFD5);
        NAMED_COLORS.put("peachpuff",0xFFDAB9);
        NAMED_COLORS.put("peru",0xCD853F);
        NAMED_COLORS.put("pink",0xFFC0CB);
        NAMED_COLORS.put("plum",0xDDA0DD);
        NAMED_COLORS.put("powderblue",0xB0E0E6);
        NAMED_COLORS.put("purple",0x800080);
        NAMED_COLORS.put("red",0xFF0000);
        NAMED_COLORS.put("rosybrown",0xBC8F8F);
        NAMED_COLORS.put("royalblue",0x4169E1);
        NAMED_COLORS.put("saddlebrown",0x8B4513);
        NAMED_COLORS.put("salmon",0xFA8072);
        NAMED_COLORS.put("sandybrown",0xF4A460);
        NAMED_COLORS.put("seagreen",0x2E8B57);
        NAMED_COLORS.put("seashell",0xFFF5EE);
        NAMED_COLORS.put("sienna",0xA0522D);
        NAMED_COLORS.put("silver",0xC0C0C0);
        NAMED_COLORS.put("skyblue",0x87CEEB);
        NAMED_COLORS.put("slateblue",0x6A5ACD);
        NAMED_COLORS.put("slategray",0x708090);
        NAMED_COLORS.put("snow",0xFFFAFA);
        NAMED_COLORS.put("springgreen",0x00FF7F);
        NAMED_COLORS.put("steelblue",0x4682B4);
        NAMED_COLORS.put("tan",0xD2B48C);
        NAMED_COLORS.put("teal",0x008080);
        NAMED_COLORS.put("thistle",0xD8BFD8);
        NAMED_COLORS.put("tomato",0xFF6347);
        NAMED_COLORS.put("turquoise",0x40E0D0);
        NAMED_COLORS.put("violet",0xEE82EE);
        NAMED_COLORS.put("wheat",0xF5DEB3);
        NAMED_COLORS.put("white",0xFFFFFF);
        NAMED_COLORS.put("whitesmoke",0xF5F5F5);
        NAMED_COLORS.put("yellow",0xFFFF00);
        NAMED_COLORS.put("yellowgreen",0x9ACD32);
    }

    public int convert(final String color) {
        if (NAMED_COLORS.containsKey(color.toLowerCase()))
            return NAMED_COLORS.get(color.toLowerCase());

        if (color.startsWith("#")) {
            return Integer.parseInt(color.substring(1), 16);
        }

        throw new IllegalArgumentException();
    }

    public static void main(String[] args)
    {
        Program p = new Program();
        System.out.println("AliceBlue: " + p.convert("#A"));
    }
}

希望这会有所帮助，

Fredrik

Hope this helps,
Fredrik

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