GraphicImage
GraphicImage is capable of presenting images that are created programatically at runtime or images stored in a database.
Documentation
JFreeChart
JFreeChart rendered as DataURI / ViewScoped support
GraphicText
<h3 style="margin-top:0">JFreeChart</h3>
<p:graphicImage value="#{graphicImageView.chart}" />
<h3>JFreeChart rendered as DataURI / ViewScoped support</h3>
<p:graphicImage value="#{graphicImageView.chart}" stream="false" />
<h3>GraphicText</h3>
<p:graphicImage value="#{graphicImageView.graphicText}" />
@Named
@RequestScoped
public class GraphicImageView {
private StreamedContent graphicText;
private StreamedContent chart;
@PostConstruct
public void init() {
try {
graphicText = DefaultStreamedContent.builder()
.contentType("image/png")
.stream(() -> {
try {
BufferedImage bufferedImg = new BufferedImage(100, 25, BufferedImage.TYPE_INT_RGB);
Graphics2D g2 = bufferedImg.createGraphics();
g2.drawString("This is a text", 0, 10);
ByteArrayOutputStream os = new ByteArrayOutputStream();
ImageIO.write(bufferedImg, "png", os);
return new ByteArrayInputStream(os.toByteArray());
}
catch (Exception e) {
e.printStackTrace();
return null;
}
})
.build();
chart = DefaultStreamedContent.builder()
.contentType("image/png")
.stream(() -> {
try {
JFreeChart jfreechart = ChartFactory.createPieChart("Cities", createDataset(), true, true, false);
File chartFile = new File("dynamichart");
ChartUtilities.saveChartAsPNG(chartFile, jfreechart, 375, 300);
return new FileInputStream(chartFile);
}
catch (Exception e) {
e.printStackTrace();
return null;
}
})
.build();
} catch (Exception e) {
e.printStackTrace();
}
}
public StreamedContent getGraphicText() {
return graphicText;
}
public StreamedContent getChart() {
return chart;
}
private PieDataset createDataset() {
DefaultPieDataset dataset = new DefaultPieDataset();
dataset.setValue("New York", new Double(45.0));
dataset.setValue("London", new Double(15.0));
dataset.setValue("Paris", new Double(25.2));
dataset.setValue("Berlin", new Double(14.8));
return dataset;
}
}
