Example usage for org.jfree.chart.encoders SunPNGEncoderAdapter encode

Introduction

In this page you can find the example usage for org.jfree.chart.encoders SunPNGEncoderAdapter encode.

Prototype

@Override
public void encode(BufferedImage bufferedImage, OutputStream outputStream) throws IOException 

Source Link

Document

Encodes an image in PNG format and writes it to an OutputStream.

Usage

From source file:bzstats.chart.AbstractChartFactory.java

/**
 * Utility function to save an image as a PNG file.
 *
 * @param image/* ww  w. j av a2s  .c o m*/
 *            The image to save.
 * @param filename
 *            The filename to save the image as.
 * @throws BZStatsException
 *             If the file could not be written.
 */
public static final void savePNGImage(BufferedImage image, String filename) throws BzStatsException {

    File outputfile = new File(filename);

    // overwrite
    if (outputfile.exists()) {
        if (outputfile.canWrite()) {
            outputfile.delete();
        } else {
            throw new BzStatsException("Cannot overwrite " + filename);
        }
    }

    boolean filecreated;
    try {
        filecreated = outputfile.createNewFile();
    } catch (IOException e2) {
        throw new BzStatsException("Failed to create file " + filename);
    }

    if (filecreated) {

        OutputStream out = null;
        try {
            out = new FileOutputStream(outputfile);
        } catch (FileNotFoundException e3) {
            throw new BzStatsException("Failed to write to file " + filename);
        }

        SunPNGEncoderAdapter encoder = new SunPNGEncoderAdapter();

        try {
            encoder.encode(image, out);
        } catch (IOException e) {
            throw new BzStatsException("Failed to encode file " + filename);
        } finally {
            try {
                out.close();
            } catch (IOException e1) {
                throw new BzStatsException("Failed to close file " + filename);
            }
        }
    } else {
        throw new BzStatsException("Failed to create file " + filename);
    }

}

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From source file:org.atomserver.testutils.plot.PerfPlotter.java

/**
 *//*w  w w.j  a  v  a  2  s  .c  om*/
public JFreeChart createPlot(XYDataset dataSet) {

    JFreeChart chart = createChart(dataSet);
    if (log.isTraceEnabled())
        log.trace("chart= " + chart);

    try {
        java.awt.image.BufferedImage buffImage = chart.createBufferedImage(width, hieght);
        if (log.isTraceEnabled())
            log.trace("buffImage= " + buffImage);

        org.jfree.chart.encoders.SunPNGEncoderAdapter pngEncoder = new org.jfree.chart.encoders.SunPNGEncoderAdapter();

        java.io.FileOutputStream fileOS = new java.io.FileOutputStream(pngFileName);
        if (log.isTraceEnabled())
            log.trace("fileOS= " + fileOS);

        pngEncoder.encode(buffImage, fileOS);
        fileOS.close();
        if (log.isTraceEnabled())
            log.trace("PNG file created sucessfully!!!!");
    } catch (Exception ee) {
        log.error(ee);
        return null;
    }
    return chart;
}

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