import java.awt.Color;
  import java.awt.Dimension;
  import java.awt.Graphics;
  

  import javax.swing.JLabel;

  import javax.swing.JPanel;
  
  public class PatternJPanel extends JPanel {
  	private static final long serialVersionUID = 1L;
  	private static final int HEIGHT = 50;
  	private static final int PADDING = 2;
  	public static final int ZOOM_MULTIPLIER = 10;

  	public static final int PATTERN_HEIGHT = (int) (HEIGHT + new JLabel(" ").getPreferredSize().height);

  	
  	private Music music;
  	private TimeLineJPanel timeLine;
  	private int end;
  
  	public PatternJPanel(Music music, TimeLineJPanel timeLine) {
  		this.music = music;
  		this.timeLine = timeLine;

  		end = Util.transformZoom(music.getMusicPattern().getStop(), timeLine.getZoomLevel());

  		setPreferredSize(new Dimension((int) end, HEIGHT));
  	}
  	
  	public void refreshPreferedSize() {

  		end = Util.transformZoom(music.getMusicPattern().getStop(), timeLine.getZoomLevel());

  		setPreferredSize(new Dimension((int) end, HEIGHT));
  	}
  	
  	public int getEnd() { return end; }
  	public Music getMusic() { return music; }
  	
  	@Override
  	protected void paintComponent(Graphics g) {
  		super.paintComponent(g);
  
  		g.setColor(Color.WHITE);

  		int begin = Util.transformZoom(music.getMusicPattern().getBegin(), timeLine.getZoomLevel());
  		g.fillRect(begin, 0, end - begin, HEIGHT);

  		
  		MusicPattern pattern = music.getMusicPattern();
  		g.setColor(Color.BLACK);
  		for(int i=0; i<pattern.getRepeat(); i++) {

  			int repeatAddition = Util.transformZoom(pattern.getTotalLength() * i, timeLine.getZoomLevel()) + begin;

  			g.drawLine(repeatAddition, HEIGHT - PADDING,

  					Util.transformZoom(pattern.getPatternTiming()[0], timeLine.getZoomLevel()) + repeatAddition, HEIGHT - PADDING);
  			g.drawLine(Util.transformZoom(pattern.getPatternTiming()[0], timeLine.getZoomLevel()) + repeatAddition, HEIGHT - PADDING,
  					Util.transformZoom(pattern.getPatternTiming()[1], timeLine.getZoomLevel()) + repeatAddition, PADDING);
  			g.drawLine(Util.transformZoom(pattern.getPatternTiming()[1], timeLine.getZoomLevel()) + repeatAddition, PADDING,
  					Util.transformZoom(pattern.getPatternTiming()[2], timeLine.getZoomLevel()) + repeatAddition, PADDING);
  			g.drawLine(Util.transformZoom(pattern.getPatternTiming()[2], timeLine.getZoomLevel()) + repeatAddition, PADDING,
  					Util.transformZoom(pattern.getPatternTiming()[3], timeLine.getZoomLevel()) + repeatAddition, HEIGHT - PADDING);
  			g.drawLine(Util.transformZoom(pattern.getPatternTiming()[3], timeLine.getZoomLevel()) + repeatAddition, HEIGHT - PADDING, 
  					Util.transformZoom(pattern.getPatternTiming()[4], timeLine.getZoomLevel()) + repeatAddition, HEIGHT - PADDING);

  		}
  	}

  }