HistogramPanel.java 文件源码

/** Constructs the histogram panel object.

      @param histogram Histogram to display */

  public HistogramPanel(Histogram h) {
    this.histogram = h;
    initClass();

    addMouseMotionListener(new MouseMotionAdapter() {
    public void mouseMoved(MouseEvent e) {      
      int x = e.getX();
      int bin = x*maxBins / size.width;
      int[][] bins = histogram.getBins();
      int numBands = bins.length;

      String txt = Integer.toString(bins[0][bin]);
      for (int i = 1; i < numBands; i++) {
        txt = txt+","+bins[i][bin];
      }

      setToolTipText("Bin: "+bin+" ["+txt+"]");
    }
      });
  }