/**
* Test chart drawing with an empty dataset to ensure that this special case doesn't cause any
* exceptions.
*/
@Test
public void testDrawWithEmptyDataset() {
JFreeChart chart =
ChartFactory.createStackedXYAreaChart("title", "x", "y", new DefaultTableXYDataset());
XYPlot plot = (XYPlot) chart.getPlot();
plot.setRenderer(new StackedXYAreaRenderer2());
BufferedImage image = new BufferedImage(200, 100, BufferedImage.TYPE_INT_RGB);
Graphics2D g2 = image.createGraphics();
chart.draw(g2, new Rectangle2D.Double(0, 0, 200, 100), null, null);
g2.dispose();
}
/** Check that the renderer is calculating the range bounds correctly. */
@Test
public void testFindRangeBounds() {
TableXYDataset dataset = RendererXYPackageTests.createTestTableXYDataset();
JFreeChart chart = ChartFactory.createStackedXYAreaChart("Test Chart", "X", "Y", dataset);
XYPlot plot = (XYPlot) chart.getPlot();
StackedXYAreaRenderer2 renderer = new StackedXYAreaRenderer2();
plot.setRenderer(renderer);
NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
Range bounds = rangeAxis.getRange();
assertTrue(bounds.contains(6.0));
assertTrue(bounds.contains(8.0));
// try null argument
assertNull(renderer.findRangeBounds(null));
// try empty dataset
assertNull(renderer.findRangeBounds(new DefaultTableXYDataset()));
}
@Override
protected ModelAndView handleRequestInternal(
HttpServletRequest request, HttpServletResponse response) throws Exception {
final int seriesMaxCount = 9; // the max number of series
// get Series Color from the request
int[] seriesColor = new int[seriesMaxCount];
seriesColor[0] = Utils.toIntHex(request.getParameter("s1c"), 0x9bd2fb);
seriesColor[1] = Utils.toIntHex(request.getParameter("s2c"), 0xFF0606);
for (int i = 2; i < seriesMaxCount; i++) {
seriesColor[i] = Utils.toIntHex(request.getParameter("s" + (i + 1) + "c"), -1);
}
// get Series Outline Color from the request
int[] seriesOutlineColor = new int[seriesMaxCount];
seriesOutlineColor[0] = Utils.toIntHex(request.getParameter("s1o"), 0x0665aa);
seriesOutlineColor[1] = Utils.toIntHex(request.getParameter("s2o"), 0x9d0000);
for (int i = 2; i < seriesMaxCount; i++) {
seriesOutlineColor[i] = Utils.toIntHex(request.getParameter("s" + (i + 1) + "o"), -1);
}
// background color
int backgroundColor = Utils.toIntHex(request.getParameter("bc"), 0xFFFFFF);
// grid color
int gridColor = Utils.toIntHex(request.getParameter("gc"), 0);
// X axis title
String labelX = ServletRequestUtils.getStringParameter(request, "xl", "");
// Y axis title
String labelY = ServletRequestUtils.getStringParameter(request, "yl", "");
// image width
int width = ServletRequestUtils.getIntParameter(request, "xz", 800);
// image height
int height = ServletRequestUtils.getIntParameter(request, "yz", 400);
// show legend?
boolean showLegend = ServletRequestUtils.getBooleanParameter(request, "l", true);
// Series provider
String provider = ServletRequestUtils.getStringParameter(request, "p", null);
// Chart type
String chartType = ServletRequestUtils.getStringParameter(request, "ct", "area");
DefaultTableXYDataset ds = new DefaultTableXYDataset();
if (provider != null) {
Object series = getApplicationContext().getBean(provider);
if (series instanceof SeriesProvider) {
((SeriesProvider) series).populate(ds, statsCollection, request);
} else {
logger.error(
"SeriesProvider \"" + provider + "\" does not implement " + SeriesProvider.class);
}
}
// Build series data from the give statistic
JFreeChart chart = null;
if ("area".equals(chartType)) {
chart =
ChartFactory.createXYAreaChart(
"", labelX, labelY, ds, PlotOrientation.VERTICAL, showLegend, false, false);
((XYAreaRenderer) chart.getXYPlot().getRenderer()).setOutline(true);
} else if ("stacked".equals(chartType)) {
chart =
ChartFactory.createStackedXYAreaChart(
"", labelX, labelY, ds, PlotOrientation.VERTICAL, showLegend, false, false);
} else if ("line".equals(chartType)) {
chart =
ChartFactory.createXYLineChart(
"", labelX, labelY, ds, PlotOrientation.VERTICAL, showLegend, false, false);
final XYLine3DRenderer renderer = new XYLine3DRenderer();
renderer.setDrawOutlines(true);
renderer.setLinesVisible(true);
renderer.setShapesVisible(true);
renderer.setStroke(new BasicStroke(2));
renderer.setXOffset(1);
renderer.setYOffset(1);
chart.getXYPlot().setRenderer(renderer);
}
if (chart != null) {
chart.setAntiAlias(true);
chart.setBackgroundPaint(new Color(backgroundColor));
for (int i = 0; i < seriesMaxCount; i++) {
if (seriesColor[i] >= 0) {
chart.getXYPlot().getRenderer().setSeriesPaint(i, new Color(seriesColor[i]));
}
if (seriesOutlineColor[i] >= 0) {
chart
.getXYPlot()
.getRenderer()
.setSeriesOutlinePaint(i, new Color(seriesOutlineColor[i]));
}
}
chart.getXYPlot().setDomainGridlinePaint(new Color(gridColor));
chart.getXYPlot().setRangeGridlinePaint(new Color(gridColor));
chart.getXYPlot().setDomainAxis(0, new DateAxis());
chart.getXYPlot().setDomainAxis(1, new DateAxis());
chart.getXYPlot().setInsets(new RectangleInsets(-15, 0, 0, 10));
response.setHeader("Content-type", "image/png");
response
.getOutputStream()
.write(ChartUtilities.encodeAsPNG(chart.createBufferedImage(width, height)));
}
return null;
}