Example usage for org.jfree.chart.encoders ImageFormat JPEG

Introduction

In this page you can find the example usage for org.jfree.chart.encoders ImageFormat JPEG.

Prototype

String JPEG

To view the source code for org.jfree.chart.encoders ImageFormat JPEG.

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Document

Joint Photographic Experts Group format - lossy

Usage

From source file:edu.cudenver.bios.chartsvc.representation.LegendImageRepresentation.java

/**
 * Called internally by Restlet library to write the image as the HTTP
 * response.//from   w  ww  . j av  a  2  s . c  o  m
 * @param out output stream
 */
@Override
public void write(OutputStream out) throws IOException {
    // build the legend from the plot, and write it to a jpeg image
    if (plot != null) {
        LegendTitle legend = new LegendTitle(plot, new ColumnArrangement(), new ColumnArrangement());
        legend.setFrame(BlockBorder.NONE);
        //legend.setMargin(new RectangleInsets(2.0, 2.0, 2.0, 2.0));
        legend.setBackgroundPaint(Color.white);
        legend.setPosition(RectangleEdge.BOTTOM);
        BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
        Graphics2D g = image.createGraphics();
        Rectangle2D.Double legendArea = new Rectangle2D.Double(0, 0, width, height);
        g.clip(legendArea);
        legend.arrange(g, new RectangleConstraint(width, height));
        legend.draw(g, legendArea);
        g.dispose();
        EncoderUtil.writeBufferedImage(image, ImageFormat.JPEG, out);
    }
}

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From source file:org.efs.openreports.engine.ChartReportEngine.java

private static ChartEngineOutput createChartOutput(ReportChart reportChart, ChartValue[] values) {
    JFreeChart chart = null;// w  w w  . j  a  va 2s . co m

    switch (reportChart.getChartType()) {
    case ReportChart.BAR_CHART:
        chart = createBarChart(reportChart, values);
        break;
    case ReportChart.PIE_CHART:
        chart = createPieChart(reportChart, values);
        break;
    case ReportChart.XY_CHART:
        chart = createXYChart(reportChart, values);
        break;
    case ReportChart.TIME_CHART:
        chart = createTimeChart(reportChart, values);
        break;
    case ReportChart.RING_CHART:
        chart = createRingChart(reportChart, values);
        break;
    }

    if (chart == null)
        return null;

    chart.setBackgroundPaint(Color.WHITE);

    ChartRenderingInfo info = new ChartRenderingInfo(new StandardEntityCollection());

    BufferedImage bufferedImage = chart.createBufferedImage(reportChart.getWidth(), reportChart.getHeight(),
            info);
    byte[] image = null;

    try {
        image = EncoderUtil.encode(bufferedImage, ImageFormat.JPEG);
    } catch (IOException ioe) {
        log.warn(ioe);
    }

    ChartEngineOutput chartOutput = new ChartEngineOutput();
    chartOutput.setContent(image);
    chartOutput.setContentType(ReportEngineOutput.CONTENT_TYPE_JPEG);
    chartOutput.setChartRenderingInfo(info);
    chartOutput.setChartValues(values);

    return chartOutput;
}

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From source file:net.sf.mzmine.chartbasics.graphicsexport.ChartExportUtil.java

public static void writeChartToJPEG(JFreeChart chart, ChartRenderingInfo info, int width, int height,
        File fileName, int resolution) throws IOException {
    // Background color
    Paint saved = chart.getBackgroundPaint();
    if (((Color) saved).getAlpha() == 0) {
        chart.setBackgroundPaint(Color.WHITE);
        chart.setBackgroundImageAlpha(255);
        if (chart.getLegend() != null)
            chart.getLegend().setBackgroundPaint(Color.WHITE);
        // legends and stuff
        for (int i = 0; i < chart.getSubtitleCount(); i++)
            if (PaintScaleLegend.class.isAssignableFrom(chart.getSubtitle(i).getClass()))
                ((PaintScaleLegend) chart.getSubtitle(i)).setBackgroundPaint(Color.WHITE);

        // apply bg
        chart.getPlot().setBackgroundPaint(Color.WHITE);
    }// w ww.  ja v  a2 s  .c  o  m
    //
    if (resolution == 72)
        writeChartToJPEG(chart, width, height, fileName);
    else {
        OutputStream out = new BufferedOutputStream(new FileOutputStream(fileName));
        try {
            BufferedImage image = paintScaledChartToBufferedImage(chart, info, out, width, height, resolution,
                    BufferedImage.TYPE_INT_RGB);
            EncoderUtil.writeBufferedImage(image, ImageFormat.JPEG, out, 1.f);
        } finally {
            out.close();
        }
    }
}

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From source file:org.gumtree.vis.mask.ChartMaskingUtilities.java

/**
 * Writes a chart to an output stream in JPEG format. This method allows
 * you to pass in a {@link ChartRenderingInfo} object, to collect
 * information about the chart dimensions/entities.  You will need this
 * info if you want to create an HTML image map.
 *
 * @param out  the output stream (<code>null</code> not permitted).
 * @param chart  the chart (<code>null</code> not permitted).
 * @param width  the image width.//from  ww w. j a va 2s  .  co  m
 * @param height  the image height.
 * @param info  the chart rendering info (<code>null</code> permitted).
 * @param shapeMap 
 *
 * @throws IOException if there are any I/O errors.
 */
public static void writeChartAsJPEG(File file, JFreeChart chart, int width, int height, ChartRenderingInfo info,
        Rectangle2D imageArea, LinkedHashMap<AbstractMask, Color> maskList,
        LinkedHashMap<Shape, Color> shapeMap, LinkedHashMap<Rectangle2D, String> textContentMap)
        throws IOException {

    if (file == null) {
        throw new IllegalArgumentException("Null 'file' argument.");
    }
    if (chart == null) {
        throw new IllegalArgumentException("Null 'chart' argument.");
    }
    OutputStream out = new BufferedOutputStream(new FileOutputStream(file));
    BufferedImage image = chart.createBufferedImage(width, height, BufferedImage.TYPE_INT_RGB, info);
    Graphics2D g2 = image.createGraphics();
    drawMasks(g2, imageArea, maskList, null, chart);
    drawShapes(g2, imageArea, shapeMap, chart);
    drawText(g2, imageArea, textContentMap, chart);
    g2.dispose();
    try {
        EncoderUtil.writeBufferedImage(image, ImageFormat.JPEG, out);
    } finally {
        out.close();
    }
}

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