it.tidalwave.mistral.example.histogramviewer.HistogramGrid Maven / Gradle / Ivy

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/***********************************************************************************************************************
 *
 * Mistral - open source imaging engine
 * Copyright (C) 2003-2012 by Tidalwave s.a.s.
 *
 ***********************************************************************************************************************
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
 * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations under the License.
 *
 ***********************************************************************************************************************
 *
 * WWW: http://mistral.tidalwave.it
 * SCM: https://bitbucket.org/tidalwave/mistral-src
 *
 **********************************************************************************************************************/
package it.tidalwave.mistral.example.histogramviewer;

import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Rectangle;

/*******************************************************************************
 *
 * @author  Fabrizio Giudici
 * @version $Id$
 *
 ******************************************************************************/
public class HistogramGrid
  {
    private Color color;

    private XYPlotter histogramPlotter;

    private int hSteps = 2;

    /*******************************************************************************
     * 
     * @param histogramPlotter
     * 
     *******************************************************************************/
    public void sethistogramPlotter (final XYPlotter histogramPlotter)
      {
        this.histogramPlotter = histogramPlotter;
      }

    /*******************************************************************************
     *
     *
     ******************************************************************************/

    public void setColor (final Color color)
      {
        this.color = color;
      }

    /*******************************************************************************
     *
     *
     ******************************************************************************/
    public Color getColor()
      {
        return color;
      }

    /*******************************************************************************
     * 
     * @param hSteps
     * 
     *******************************************************************************/
    public void setHSteps (final int hSteps)
      {
        this.hSteps = hSteps;
      }

    /*******************************************************************************
     *
     *
     ******************************************************************************/
    public void paint (final Graphics g, final Rectangle bounds)
      {
        Graphics2D g2 = (Graphics2D)g;
        g2.setColor(getColor());
        int x = bounds.x;
        int y = bounds.y;
        int w = bounds.width;
        int h = bounds.height;

        for (int i = 1; i <= hSteps - 1; i++)
          {
            int x0 = 0;

            if (histogramPlotter.isXAxisLogarithmic())
              {
                x0 = x + (i * w) / hSteps;
              }

            else
              {
                x0 = x + w / (int)(Math.pow(2, i));
              }

            g2.drawLine(x0, y, x0, y + h - 1);
          }

        g2.drawLine(x, y + h / 2, x + w - 1, y + h / 2);
      }
  }