/**
    * Copyright (c) 2011, The University of Southampton and the individual contributors.
    * All rights reserved.
    *
    * Redistribution and use in source and binary forms, with or without modification,
    * are permitted provided that the following conditions are met:
    *
    *   * 	Redistributions of source code must retain the above copyright notice,
    * 	this list of conditions and the following disclaimer.
   *
   *   *	Redistributions in binary form must reproduce the above copyright notice,
   * 	this list of conditions and the following disclaimer in the documentation
   * 	and/or other materials provided with the distribution.
   *
   *   *	Neither the name of the University of Southampton nor the names of its
   * 	contributors may be used to endorse or promote products derived from this
   * 	software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
   * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
   * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
   * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
   * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
   * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  package org.openimaj.demos.video.utils;
  
  import java.awt.event.MouseEvent;
  import java.awt.event.MouseListener;
  
  import javax.swing.JFrame;
  
  import org.openimaj.feature.local.list.LocalFeatureList;
  import org.openimaj.image.DisplayUtilities;
  import org.openimaj.image.FImage;
  import org.openimaj.image.Image;
  import org.openimaj.image.feature.local.engine.ipd.InterestPointImageExtractorProperties;
  import org.openimaj.image.feature.local.interest.InterestPointData;
  import org.openimaj.image.feature.local.keypoints.InterestPointKeypoint;
  import org.openimaj.image.processing.convolution.FGaussianConvolve;
  import org.openimaj.image.processing.resize.ResizeProcessor;
  import org.openimaj.image.processor.SinglebandImageProcessor;
  import org.openimaj.math.geometry.point.Point2dImpl;
  import org.openimaj.math.geometry.shape.Circle;
  
  /**
   * Click on features and draw them
   * @author Sina Samangooei (ss@ecs.soton.ac.uk)
   *
   * @param <S>
   * @param <T>
   */
  public class FeatureClickListener<S,T extends Image<S,T> & SinglebandImageProcessor.Processable<Float,FImage,T> > implements MouseListener {
  
  	private LocalFeatureList<InterestPointKeypoint<InterestPointData>> points = null;
  	private T image;
  	private JFrame frame = null;
  	private ResizeProcessor r = new ResizeProcessor(100,100);
  	
  	@Override
  	public synchronized void mouseClicked(MouseEvent e) {
  		if(this.points == null) return;
  		double dist = Double.MAX_VALUE;
  		Circle foundShape = null;
  		InterestPointKeypoint<InterestPointData> foundPoint = null;
  		Point2dImpl clickPoint = new Point2dImpl(e.getPoint().x,e.getPoint().y);
  		for(InterestPointKeypoint<InterestPointData> point : points){
  			Circle ellipse = new Circle(point.location.x, point.location.y, point.scale);
  			if(ellipse.isInside(clickPoint)){
  //				double pdist = Math.sqrt(clickPoint.x * clickPoint.x + clickPoint.y * clickPoint.y);
  				double pdist = point.scale;
  				if(pdist < dist){
  					foundShape = ellipse;
  					foundPoint = point;
  					dist = pdist;
  				}
  			}
  		}
  		if(foundShape!=null){
  //			PolygonExtractionProcessor<S, T> ext = new PolygonExtractionProcessor<S,T>(foundShape, image.newInstance(1, 1).getPixel(0,0));
  			FGaussianConvolve blur = new FGaussianConvolve (foundPoint.scale);
  			InterestPointImageExtractorProperties<S, T> extract = new InterestPointImageExtractorProperties<S,T>(image.process(blur),foundPoint.location);
  			if(frame== null){
  				frame = DisplayUtilities.display(extract.image.process(r));
  			}
  			else{
  				frame.dispose();
  				frame = DisplayUtilities.display(extract.image.process(r));
  			}
  		}
  	}
  
  	@Override
  	public void mousePressed(MouseEvent e) {
  		// TODO Auto-generated method stub
 		
 	}
 
 	@Override
 	public void mouseReleased(MouseEvent e) {
 		// TODO Auto-generated method stub
 		
 	}
 
 	@Override
 	public void mouseEntered(MouseEvent e) {
 		// TODO Auto-generated method stub
 		
 	}
 
 	@Override
 	public void mouseExited(MouseEvent e) {
 		// TODO Auto-generated method stub
 		
 	}
 
 
 	/**
 	 * @return the clicked on
 	 */
 	public LocalFeatureList<InterestPointKeypoint<InterestPointData>> getPoints() {
 		return points;
 	}
 
 	/**
 	 * the image and keypoints to draw
 	 * @param kpl
 	 * @param image
 	 */
 	public synchronized void setImage(LocalFeatureList<InterestPointKeypoint<InterestPointData>> kpl,T image) {
 		this.image = image;
 		this.points = kpl;
 	}
 
 	/**
 	 * @return the underlying image being clicked on
 	 */
 	public T getImage() {
 		return image;
 	}
 
 }