content: /**
   *   Copyright 2012-2019 Wicked Charts (http://github.com/adessoAG/wicked-charts)
   *
   *   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 de.adesso.wickedcharts.highcharts.jackson;
  
  import java.awt.*;
  import java.util.Locale;
  
  public abstract class ColorReferenceSerializer<T> extends NullableSerializer<T> {
  
  	private static final String BRIGHTEN_COLOR = "Highcharts.Color(%s).brighten(%.2f).get()";
  
  	protected String brighten(final String colorString, final float brightness) {
  		String brightenedString = String.format(Locale.ENGLISH, BRIGHTEN_COLOR, colorString, brightness);
  		return brightenedString;
  	}
  
  	protected String toHexString(final Color color) {
  		return Integer.toHexString(color.getRGB()).replaceFirst("ff", "#");
  	}
  
  }
  