content: /*
   This file is part of Airsonic.
  
   Airsonic 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.
  
   Airsonic 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 Airsonic.  If not, see <http://www.gnu.org/licenses/>.
  
   Copyright 2016 (C) Airsonic Authors
   Based upon Subsonic, Copyright 2009 (C) Sindre Mehus
   */
  package org.airsonic.player.controller;
  
  import org.springframework.ui.context.Theme;
  import org.springframework.web.servlet.support.RequestContextUtils;
  
  import javax.servlet.http.HttpServletRequest;
  
  import java.awt.*;
  import java.util.Locale;
  
  /**
   * Abstract super class for controllers which generate charts.
   *
   * @author Sindre Mehus
   */
  public abstract class AbstractChartController {
  
      /**
       * Returns the chart background color for the current theme.
       * @param request The servlet request.
       * @return The chart background color.
       */
      protected Color getBackground(HttpServletRequest request) {
          return getColor("backgroundColor", request);
      }
  
      /**
       * Returns the chart foreground color for the current theme.
       * @param request The servlet request.
       * @return The chart foreground color.
       */
      protected Color getForeground(HttpServletRequest request) {
          return getColor("textColor", request);
      }
  
      private Color getColor(String code, HttpServletRequest request) {
          Theme theme = RequestContextUtils.getTheme(request);
          Locale locale = RequestContextUtils.getLocale(request);
          String colorHex = theme.getMessageSource().getMessage(code, new Object[0], locale);
          return new Color(Integer.parseInt(colorHex, 16));
      }
  }
  