package bluej.stride.generic;

import javafx.scene.effect.BoxBlur;
import javafx.scene.effect.ColorAdjust;
import javafx.scene.effect.Effect;

public class FrameEffects
{       
private static Effect disabledEffect;
   
   private static Effect dragSourceEffect;
   
   private static Effect dragSourceAndDisabledEffect;
    
   
   public static Effect getDisabledEffect()
   {
      if (disabledEffect == null)
       {            
         ColorAdjust adj = new ColorAdjust(0, -0.5, 0.3, 0.0);
           
         adj.setInput(new BoxBlur(2, 2, 5));
           
         disabledEffect = adj;         
         }
       
      return disabledEffect;     
      }
    
   
   private static Effect getDragSourceEffect(Effect input)
   {        
      BoxBlur bb = new BoxBlur();
      bb.setWidth(4);
      bb.setHeight(4);
      bb.setIterations(2);
      bb.setInput(input);
       
      return bb;     
      }
    
   
   public static Effect getDragSourceEffect()
   {
      if (dragSourceEffect == null)
      dragSourceEffect = getDragSourceEffect(null);
       
      return dragSourceEffect;     
      }
    
   
   public static Effect getDragSourceAndDisabledEffect()
   {
      if (dragSourceAndDisabledEffect == null)
      dragSourceAndDisabledEffect = getDragSourceEffect(getDisabledEffect());
       
      return dragSourceAndDisabledEffect;     
      } 
   }