ColorUtilities.java

/*  Copyright 2009 Tonny Kohar.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
* implied.
*
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.qi4j.envisage.util;

import java.awt.*;

/**
 * Collection of Color Utilities
 */
public class ColorUtilities
{
    private ColorUtilities()
    {
        throw new Error( "This is a utility class for static methods" );
    }

    /**
     * Return the equivalent AWT {@code Color} of the supplied hexString in format eg #FF33D2
     *
     * @param hexString Color in hexString format eg: #FF33D2
     *
     * @return the AWT {@code Color} or null if fail to parse
     */
    public static Color hexStringToColor( String hexString )
    {
        Color color = null;
        int r = 0;
        int g = 0;
        int b = 0;

        try
        {
            String tmpStr = hexString.substring( 1, 3 );
            r = Integer.parseInt( tmpStr, 16 );
            tmpStr = hexString.substring( 3, 5 );
            g = Integer.parseInt( tmpStr, 16 );
            tmpStr = hexString.substring( 5, 7 );
            b = Integer.parseInt( tmpStr, 16 );
            color = new Color( r, g, b );
        }
        catch( Exception e )
        {
            color = null;
        }

        return color;
    }
}