org/sonews/web/MemoryBitmapChart.java
author chris <chris@marvin>
Fri, 26 Jun 2009 16:48:50 +0200
changeset 1 6fceb66e1ad7
permissions -rw-r--r--
Hooray... sonews/0.5.0 final

HG: Enter commit message. Lines beginning with 'HG:' are removed.
HG: Remove all lines to abort the collapse operation.
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/*
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 *   SONEWS News Server
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 *   see AUTHORS for the list of contributors
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 *
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 *   This program is free software: you can redistribute it and/or modify
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 *   it under the terms of the GNU General Public License as published by
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 *   the Free Software Foundation, either version 3 of the License, or
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 *   (at your option) any later version.
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 *
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 *   This program is distributed in the hope that it will be useful,
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 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
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 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 *   GNU General Public License for more details.
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 *
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 *   You should have received a copy of the GNU General Public License
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 *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
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 */
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package org.sonews.web;
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import info.monitorenter.gui.chart.Chart2D;
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import info.monitorenter.gui.chart.IAxis.AxisTitle;
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import java.awt.Color;
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import java.awt.image.BufferedImage;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import javax.imageio.ImageIO;
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/**
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 * A chart rendered to a memory bitmap.
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 * @author Christian Lins
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 * @since sonews/0.5.0
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 */
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class MemoryBitmapChart extends Chart2D
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{
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  public MemoryBitmapChart()
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  {
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    setGridColor(Color.LIGHT_GRAY);
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    getAxisX().setPaintGrid(true);
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    getAxisY().setPaintGrid(true);
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    getAxisX().setAxisTitle(new AxisTitle("time of day"));
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    getAxisY().setAxisTitle(new AxisTitle("processed news"));
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  }
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  public String getContentType()
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  {
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    return "image/png";
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  }
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  public byte[] getRawData(final int width, final int height)
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    throws IOException
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  {
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    setSize(width, height);
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    BufferedImage img = snapShot(width, height);
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    ByteArrayOutputStream out = new ByteArrayOutputStream();
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    ImageIO.write(img, "png", out);
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    return out.toByteArray();
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  }
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}