Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
import java.awt.Color;
import java.util.HashMap;
import java.util.Map;

public class Main {
    static Map<String, Color> colorMap = new HashMap<String, Color>();

    /**
     * return a color value from a string specification.
     */
    public static Color colorValue(String colorName) {
        if (colorName == null) {
            return null;
        }

        colorName = colorName.trim().toLowerCase();

        Color color = colorMap.get(colorName);

        if (color == null && colorName.startsWith("rgb")) {
            color = rgbStringToColor(colorName);
        }
        if (color == null) {
            color = Color.decode(colorName);
        }

        return color;
    }

    public static Color rgbStringToColor(String rgbString) {
        String rgb[] = rgbString.split(",");

        if (rgb.length == 3) {
            return new Color(parseSingleChanel(rgb[0]), parseSingleChanel(rgb[1]), parseSingleChanel(rgb[2]));
        } else if (rgb.length == 4) {
            return new Color(parseSingleChanel(rgb[0]), parseSingleChanel(rgb[1]), parseSingleChanel(rgb[2]),
                    parseSingleChanel(rgb[3]));
        }

        throw new RuntimeException("invalid rgb color specification: " + rgbString);
    }

    private static int parseSingleChanel(String chanel) {
        if (chanel.contains("%")) {
            float percent = Float.parseFloat(chanel.replaceAll("[^0-9\\.]", ""));
            return (int) (255 * (percent / 100));
        }
        return Integer.parseInt(chanel.replaceAll("[^0-9]", ""));
    }
}