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

List of usage examples for org.jfree.chart.encoders KeypointPNGEncoderAdapter encode

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Introduction

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

Prototype

@Override
public byte[] encode(BufferedImage bufferedImage) throws IOException

Source Link

Document

Encodes an image in PNG format.

Usage

From source file:org.gbif.portal.web.util.ChartUtils.java

/**
 * Writes out the image using the supplied file name.
 * //from www.  ja  v a 2 s  .  c  o m
 * @param legend
 * @param fileName
 * @return
 */
public static String writePieChartImageToTempFile(Map<String, Double> legend, String fileName) {

    String filePath = System.getProperty(tmpDirSystemProperty) + File.separator + fileName + defaultExtension;
    File fileToCheck = new File(filePath);
    if (fileToCheck.exists()) {
        return fileName + defaultExtension;
    }

    final DefaultPieDataset data = new DefaultPieDataset();
    Set<String> keys = legend.keySet();
    for (String key : keys) {
        logger.info("Adding key : " + key);
        data.setValue(key, legend.get(key));
    }

    // create a pie chart...
    final boolean withLegend = true;
    final JFreeChart chart = ChartFactory.createPieChart(null, data, withLegend, false, false);

    PiePlot piePlot = (PiePlot) chart.getPlot();
    piePlot.setLabelFont(new Font("Arial", Font.PLAIN, 10));
    piePlot.setLabelBackgroundPaint(Color.WHITE);

    LegendTitle lt = chart.getLegend();
    lt.setBackgroundPaint(Color.WHITE);
    lt.setWidth(300);
    lt.setBorder(0, 0, 0, 0);
    lt.setItemFont(new Font("Arial", Font.PLAIN, 11));

    chart.setPadding(new RectangleInsets(0, 0, 0, 0));
    chart.setBorderVisible(false);
    chart.setBackgroundImageAlpha(0);
    chart.setBackgroundPaint(Color.WHITE);
    chart.setBorderPaint(Color.LIGHT_GRAY);

    final BufferedImage image = new BufferedImage(300, 250, BufferedImage.TYPE_INT_RGB);
    KeypointPNGEncoderAdapter adapter = new KeypointPNGEncoderAdapter();
    adapter.setQuality(1);
    try {
        adapter.encode(image);
    } catch (IOException e) {
        logger.error(e.getMessage(), e);
    }
    final Graphics2D g2 = image.createGraphics();
    g2.setFont(new Font("Arial", Font.PLAIN, 11));
    final Rectangle2D chartArea = new Rectangle2D.Double(0, 0, 300, 250);

    // draw
    chart.draw(g2, chartArea, null, null);

    try {
        FileOutputStream fOut = new FileOutputStream(fileToCheck);
        ChartUtilities.writeChartAsPNG(fOut, chart, 300, 250);
        return fileToCheck.getName();
    } catch (IOException e) {
        logger.error(e.getMessage(), e);
        return null;
    }
}

From source file:org.gbif.portal.web.controller.dataset.IndexingHistoryController.java

/**
 * Create a time series graphic to display indexing processes.
 * /*from  w w w . j a v  a 2  s.  com*/
 * @param dataProvider
 * @param dataResource
 * @param activities
 * @param fileNamePrefix
 * @return
 */
public String timeSeriesTest(DataProviderDTO dataProvider, DataResourceDTO dataResource,
        List<LoggedActivityDTO> loggedActivities, String fileNamePrefix, int minProcessingTimeToRender) {

    List<LoggedActivityDTO> activities = new ArrayList<LoggedActivityDTO>();
    for (LoggedActivityDTO la : loggedActivities) {
        if (la.getDataResourceKey() != null && la.getDataResourceName() != null && la.getEventName() != null)
            activities.add(la);
    }

    //if no activities to render, return
    if (activities.isEmpty())
        return null;

    Map<String, Integer> drActualCount = new HashMap<String, Integer>();
    Map<String, Integer> drCount = new HashMap<String, Integer>();

    //record the actual counts
    for (LoggedActivityDTO laDTO : activities) {
        if (laDTO.getStartDate() != null && laDTO.getEndDate() != null
                && laDTO.getDurationInMillisecs() > minProcessingTimeToRender) {
            if (drActualCount.get(laDTO.getDataResourceName()) == null) {
                drActualCount.put(laDTO.getDataResourceName(), new Integer(4));
                drCount.put(laDTO.getDataResourceName(), new Integer(0));
            } else {
                Integer theCount = drActualCount.get(laDTO.getDataResourceName());
                theCount = new Integer(theCount.intValue() + 4);
                drActualCount.remove(laDTO.getDataResourceName());
                drActualCount.put(laDTO.getDataResourceName(), theCount);
            }
        }
    }

    StringBuffer fileNameBuffer = new StringBuffer(fileNamePrefix);
    if (dataResource != null) {
        fileNameBuffer.append("-resource-");
        fileNameBuffer.append(dataResource.getKey());
    } else if (dataProvider != null) {
        fileNameBuffer.append("-provider-");
        fileNameBuffer.append(dataProvider.getKey());
    }
    fileNameBuffer.append(".png");

    String fileName = fileNameBuffer.toString();
    String filePath = System.getProperty("java.io.tmpdir") + File.separator + fileName;

    File fileToCheck = new File(filePath);
    if (fileToCheck.exists()) {
        return fileName;
    }

    TimeSeriesCollection dataset = new TimeSeriesCollection();
    boolean generateChart = false;

    int count = 1;
    int dataResourceCount = 1;

    Collections.sort(activities, new Comparator<LoggedActivityDTO>() {
        public int compare(LoggedActivityDTO o1, LoggedActivityDTO o2) {
            if (o1 == null || o2 == null || o1.getDataResourceKey() != null || o2.getDataResourceKey() != null)
                return -1;
            return o1.getDataResourceKey().compareTo(o2.getDataResourceKey());
        }
    });

    String currentDataResourceKey = activities.get(0).getDataResourceKey();

    for (LoggedActivityDTO laDTO : activities) {
        if (laDTO.getStartDate() != null && laDTO.getEndDate() != null
                && laDTO.getDurationInMillisecs() > minProcessingTimeToRender) {

            if (currentDataResourceKey != null && !currentDataResourceKey.equals(laDTO.getDataResourceKey())) {
                dataResourceCount++;
                count = count + 1;
                currentDataResourceKey = laDTO.getDataResourceKey();
            }
            TimeSeries s1 = new TimeSeries(laDTO.getDataResourceName(), "Process time period",
                    laDTO.getEventName(), Hour.class);
            s1.add(new Hour(laDTO.getStartDate()), count);
            s1.add(new Hour(laDTO.getEndDate()), count);
            dataset.addSeries(s1);
            generateChart = true;
        }
    }

    if (!generateChart)
        return null;

    // create a pie chart...
    final JFreeChart chart = ChartFactory.createTimeSeriesChart(null, null, null, dataset, false, false, false);

    XYPlot plot = chart.getXYPlot();
    plot.setWeight(10);
    plot.getRangeAxis().setAutoRange(false);
    plot.getRangeAxis().setRange(0, drCount.size() + 1);
    plot.getRangeAxis().setAxisLineVisible(false);
    plot.getRangeAxis().setAxisLinePaint(Color.WHITE);
    plot.setDomainCrosshairValue(1);
    plot.setRangeGridlinesVisible(false);
    plot.getRangeAxis().setVisible(false);
    plot.getRangeAxis().setLabel("datasets");

    XYLineAndShapeRenderer renderer = (XYLineAndShapeRenderer) plot.getRenderer();
    renderer.setItemLabelsVisible(true);
    MyXYItemLabelGenerator labelGenerator = new MyXYItemLabelGenerator();
    labelGenerator.setDataResourceActualCount(drActualCount);
    labelGenerator.setDataResourceCount(drCount);
    renderer.setItemLabelGenerator(labelGenerator);

    List<TimeSeries> seriesList = dataset.getSeries();
    for (TimeSeries series : seriesList) {
        if (((String) series.getRangeDescription()).startsWith("extraction")) {
            renderer.setSeriesPaint(seriesList.indexOf(series), Color.RED);
        } else {
            renderer.setSeriesPaint(seriesList.indexOf(series), Color.BLUE);
        }
        renderer.setSeriesStroke(seriesList.indexOf(series), new BasicStroke(7f));
    }

    int imageHeight = 30 * dataResourceCount;
    if (imageHeight < 100) {
        imageHeight = 100;
    } else {
        imageHeight = imageHeight + 100;
    }

    final BufferedImage image = new BufferedImage(900, imageHeight, BufferedImage.TYPE_INT_RGB);
    KeypointPNGEncoderAdapter adapter = new KeypointPNGEncoderAdapter();
    adapter.setQuality(1);
    try {
        adapter.encode(image);
    } catch (IOException e) {
        logger.error(e.getMessage(), e);
    }
    final Graphics2D g2 = image.createGraphics();
    g2.setFont(new Font("Arial", Font.PLAIN, 11));
    final Rectangle2D chartArea = new Rectangle2D.Double(0, 0, 900, imageHeight);

    // draw
    chart.draw(g2, chartArea, null, null);

    //styling
    chart.setPadding(new RectangleInsets(0, 0, 0, 0));
    chart.setBorderVisible(false);
    chart.setBackgroundImageAlpha(0);
    chart.setBackgroundPaint(Color.WHITE);
    chart.setBorderPaint(Color.LIGHT_GRAY);

    try {
        FileOutputStream fOut = new FileOutputStream(filePath);
        ChartUtilities.writeChartAsPNG(fOut, chart, 900, imageHeight);
        return fileName;
    } catch (IOException e) {
        logger.error(e.getMessage(), e);
    }
    return null;
}

From source file:org.jivesoftware.openfire.reporting.graph.GraphEngine.java

/**
 * Creates a graph in PNG format.  The PNG graph is encoded by the KeypointPNGEncoderAdapter
 * so that the resulting PNG is encoded with alpha transparency.
 *
 * @param key//from  w  ww.  j av a  2 s.  c o  m
 * @param width
 * @param height
 * @param startTime
 * @param endTime
 * @param dataPoints
 * @return
 * @throws IOException
 */
public byte[] generateGraph(String key, int width, int height, String color, long startTime, long endTime,
        int dataPoints) throws IOException {

    JFreeChart chart = generateChart(key, width, height, color, startTime, endTime, dataPoints);
    KeypointPNGEncoderAdapter encoder = new KeypointPNGEncoderAdapter();
    encoder.setEncodingAlpha(true);
    return encoder.encode(chart.createBufferedImage(width, height, BufferedImage.BITMASK, null));
}

From source file:org.jivesoftware.openfire.reporting.graph.GraphEngine.java

/**
 * Generates a Sparkline type graph. Sparkline graphs
 * are "intense, simple, wordlike graphics" so named by Edward Tufte. The big
 * difference between the graph produced by this method compared to the
 * graph produced by the <code>generateGraph</code> method is that this one
 * produces graphs with no x-axis and no y-axis and is usually smaller in size.
 * @param key/*w w  w  .  j ava 2 s  .  c o m*/
 * @param width
 * @param height
 * @param startTime
 * @param endTime
 * @param dataPoints
 * @return
 * @throws IOException
 */
public byte[] generateSparklinesGraph(String key, int width, int height, String color, long startTime,
        long endTime, int dataPoints) throws IOException {
    Statistic[] def = statsViewer.getStatistic(key);
    if (def == null) {
        return null;
    }

    JFreeChart chart;
    switch (def[0].getStatType()) {
    case count:
        chart = generateSparklineBarGraph(key, color, def, startTime, endTime, dataPoints);
        break;
    default:
        chart = generateSparklineAreaChart(key, color, def, startTime, endTime, dataPoints);
    }

    KeypointPNGEncoderAdapter encoder = new KeypointPNGEncoderAdapter();
    encoder.setEncodingAlpha(true);
    return encoder.encode(chart.createBufferedImage(width, height, BufferedImage.BITMASK, null));
}