Re-conversion of the human readable RGB representation back to a Color : if the given text matches the expected pattern 'rgb(X, X, X)', the represented Color will be returned, if the given text equals 'none', null will be returned, otherwise the provided defaultValue will be returned. - Java 2D Graphics

Java examples for 2D Graphics:Color RGB

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Description

Re-conversion of the human readable RGB representation back to a Color : if the given text matches the expected pattern 'rgb(X, X, X)', the represented Color will be returned, if the given text equals 'none', null will be returned, otherwise the provided defaultValue will be returned.

Demo Code

/*/*from   w  w w  .  j  a v  a  2  s  . c o m*/
   Copyright (C) 2016 HermeneutiX.org

   This file is part of SciToS.

   SciToS 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.

   SciToS 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 SciToS. If not, see <http://www.gnu.org/licenses/>.
 */
//package com.java2s;
import java.awt.Color;

public class Main {
    /**
     * Re-conversion of the human readable RGB representation back to a {@link Color}:
     * <ol>
     * <li>if the given {@code text} matches the expected pattern 'rgb(X, X, X)', the represented {@link Color} will be returned,</li>
     * <li>if the given {@code text} equals 'none', {@code null} will be returned,</li>
     * <li>otherwise the provided {@code defaultValue} will be returned.</li>
     * </ol>
     *
     * @param text
     *            the text to interpret as color 'rgb(X, X, X)' ('none' will return {@code null})
     * @param defaultValue
     *            value to return if the given {@code text} is {@code null} or otherwise invalid
     * @return interpreted {@link Color} value (can be {@code null})
     * @see #toString(Color)
     */
    public static Color toColor(final String text, final Color defaultValue) {
        if ("none".equals(text)) {
            return null;
        }
        if (text != null) {
            final String[] colorValues = text.replaceAll("[^0-9]+", " ")
                    .trim().split(" ");
            if (colorValues.length == 3) {
                final int red = Integer.valueOf(colorValues[0]).intValue();
                final int green = Integer.valueOf(colorValues[1])
                        .intValue();
                final int blue = Integer.valueOf(colorValues[2]).intValue();
                return new Color(red, green, blue);
            }
        }
        return defaultValue;
    }
}

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