package org.opentrafficsim.editor;
   
   import java.awt.Color;
   
   import javax.swing.JLabel;
   
   import org.opentrafficsim.draw.ColorInterpolator;
   import org.opentrafficsim.swing.gui.AppearanceControl;
   
  /**
   * Status label at bottom of the screen with font color interpolated between background and foreground colors in GUI appearance.
   * <p>
   * Copyright (c) 2023-2024 Delft University of Technology, PO Box 5, 2600 AA, Delft, the Netherlands. All rights reserved. <br>
   * BSD-style license. See <a href="https://opentrafficsim.org/docs/license.html">OpenTrafficSim License</a>.
   * </p>
   * @author <a href="https://github.com/averbraeck">Alexander Verbraeck</a>
   * @author <a href="https://github.com/peter-knoppers">Peter Knoppers</a>
   * @author <a href="https://github.com/wjschakel">Wouter Schakel</a>
   */
  public class StatusLabel extends JLabel implements AppearanceControl
  {
  
      /** */
      private static final long serialVersionUID = 20231017L;
  
      /** Standard background color in appearance. */
      private Color appearanceBackgroundColor;
  
      /** Standard foreground color in appearance. */
      private Color appearanceForegroundColor;
  
      /**
       * Constructor.
       */
      public StatusLabel()
      {
          //
      }
  
      /** {@inheritDoc} */
      @Override
      public boolean isBackground()
      {
          return true;
      }
  
      /** {@inheritDoc} */
      @Override
      public boolean isForeground()
      {
          return true;
      }
  
      /** {@inheritDoc} */
      @Override
      public boolean isFont()
      {
          return true;
      }
  
      /** {@inheritDoc} */
      @Override
      public void setBackground(final Color bg)
      {
          this.appearanceBackgroundColor = bg;
          super.setBackground(bg);
          updateForgroundColor();
      }
  
      /** {@inheritDoc} */
      @Override
      public void setForeground(final Color fg)
      {
          this.appearanceForegroundColor = fg;
          super.setForeground(fg);
          updateForgroundColor();
      }
  
      /**
       * Updates the foreground color by reducing the contrast with the background color.
       */
      private void updateForgroundColor()
      {
          if (this.appearanceForegroundColor != null && this.appearanceBackgroundColor != null)
          {
              super.setForeground(
                      ColorInterpolator.interpolateColor(this.appearanceForegroundColor, this.appearanceBackgroundColor, 0.7));
          }
      }
  
  }