/** * 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; }