/*

 *   SONEWS News Server

 *   see AUTHORS for the list of contributors

 *

 *   This program is free software: you can redistribute it and/or modify

 *   it under the terms of the GNU General Public License as published by

 *   the Free Software Foundation, either version 3 of the License, or

 *   (at your option) any later version.

 *

 *   This program is distributed in the hope that it will be useful,

 *   but WITHOUT ANY WARRANTY; without even the implied warranty of

 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 *   GNU General Public License for more details.

 *

 *   You should have received a copy of the GNU General Public License

 *   along with this program.  If not, see <http://www.gnu.org/licenses/>.

 */

package org.sonews.web;

import info.monitorenter.gui.chart.Chart2D;

import info.monitorenter.gui.chart.IAxis.AxisTitle;

import java.awt.Color;

import java.awt.image.BufferedImage;

import java.io.ByteArrayOutputStream;

import java.io.IOException;

import javax.imageio.ImageIO;

/**

 * A chart rendered to a memory bitmap.

 * @author Christian Lins

 * @since sonews/0.5.0

 */

class MemoryBitmapChart extends Chart2D

{

  public MemoryBitmapChart()

  {

    setGridColor(Color.LIGHT_GRAY);

    getAxisX().setPaintGrid(true);

    getAxisY().setPaintGrid(true);

    getAxisX().setAxisTitle(new AxisTitle("time of day"));

    getAxisY().setAxisTitle(new AxisTitle("processed news"));

  }

  public String getContentType()

  {

    return "image/png";

  }

  public byte[] getRawData(final int width, final int height)

    throws IOException

  {

    setSize(width, height);

    BufferedImage img = snapShot(width, height);

    ByteArrayOutputStream out = new ByteArrayOutputStream();

    ImageIO.write(img, "png", out);

    return out.toByteArray();

  }

}