public static byte[] getChartData(
PointTimeSeriesCollection pointTimeSeriesCollection,
int width,
int height,
long from,
long to) {
return getChartData(
pointTimeSeriesCollection,
pointTimeSeriesCollection.hasMultiplePoints(),
width,
height,
from,
to);
}
public static void writeChart(
PointTimeSeriesCollection pointTimeSeriesCollection,
OutputStream out,
int width,
int height,
long from,
long to)
throws IOException {
writeChart(
pointTimeSeriesCollection,
pointTimeSeriesCollection.hasMultiplePoints(),
out,
width,
height,
from,
to);
}
public static void writeChart(
PointTimeSeriesCollection pointTimeSeriesCollection,
boolean showLegend,
OutputStream out,
int width,
int height,
long from,
long to)
throws IOException {
// 创建主题样式
StandardChartTheme standardChartTheme = new StandardChartTheme("CN");
// 设置标题字体
standardChartTheme.setExtraLargeFont(new Font("隶书", Font.BOLD, 18));
// 设置图例的字体
standardChartTheme.setRegularFont(new Font("宋书", Font.PLAIN, 14));
// 设置轴向的字体
standardChartTheme.setLargeFont(new Font("宋书", Font.PLAIN, 14));
// 应用主题样式
ChartFactory.setChartTheme(standardChartTheme);
JFreeChart chart =
ChartFactory.createTimeSeriesChart(null, null, null, null, showLegend, false, false);
chart.setBackgroundPaint(
SystemSettingsDao.getColour(SystemSettingsDao.CHART_BACKGROUND_COLOUR));
XYPlot plot = chart.getXYPlot();
((DateAxis) plot.getDomainAxis()).setTimeZone(pointTimeSeriesCollection.getTimeZone());
plot.setBackgroundPaint(SystemSettingsDao.getColour(SystemSettingsDao.PLOT_BACKGROUND_COLOUR));
Color gridlines = SystemSettingsDao.getColour(SystemSettingsDao.PLOT_GRIDLINE_COLOUR);
plot.setDomainGridlinePaint(gridlines);
plot.setRangeGridlinePaint(gridlines);
((NumberAxis) plot.getRangeAxis()).setAutoRangeStickyZero(false);
double numericMin = 0;
double numericMax = 1;
int numericSeriesCount = pointTimeSeriesCollection.getNumericSeriesCount();
if (pointTimeSeriesCollection.hasNumericData()) {
for (int i = 0; i < numericSeriesCount; i++) {
NumericTimeSeries nts = pointTimeSeriesCollection.getNumericTimeSeries(i);
AbstractXYItemRenderer renderer;
if (nts.getPlotType() == DataPointVO.PlotTypes.STEP) renderer = new XYStepRenderer();
else if (nts.getPlotType() == DataPointVO.PlotTypes.LINE)
renderer = new XYLineAndShapeRenderer(true, false);
else {
XYSplineRenderer spline = new XYSplineRenderer();
spline.setBaseShapesVisible(false);
renderer = spline;
}
if (nts.getPaint() != null) renderer.setSeriesPaint(0, nts.getPaint(), false);
if (nts.getStroke() != null) renderer.setSeriesStroke(0, nts.getStroke(), false);
plot.setDataset(i, new TimeSeriesCollection(nts.getTimeSeries()));
plot.setRenderer(i, renderer);
}
numericMin = plot.getRangeAxis().getLowerBound();
numericMax = plot.getRangeAxis().getUpperBound();
if (!pointTimeSeriesCollection.hasMultiplePoints()) {
// If this chart displays a single point, check if there should be a range description.
TimeSeries timeSeries = pointTimeSeriesCollection.getNumericTimeSeries(0).getTimeSeries();
String desc = timeSeries.getRangeDescription();
if (!StringUtils.isBlank(desc)) {
// Replace any HTML entities with Java equivalents
desc = StripEntities.stripHTMLEntities(desc, ' ');
plot.getRangeAxis().setLabel(desc);
}
}
} else plot.getRangeAxis().setVisible(false);
if (pointTimeSeriesCollection.getRangeMarkers() != null) {
boolean rangeAdjusted = false;
for (Marker marker : pointTimeSeriesCollection.getRangeMarkers()) {
plot.addRangeMarker(marker);
if (marker instanceof ValueMarker) {
ValueMarker vm = (ValueMarker) marker;
if (numericMin > vm.getValue()) {
numericMin = vm.getValue();
rangeAdjusted = true;
}
if (numericMax < vm.getValue()) {
numericMax = vm.getValue();
rangeAdjusted = true;
}
}
}
if (rangeAdjusted) {
double adj = (numericMax - numericMin);
plot.getRangeAxis().setLowerBound(numericMin - adj * plot.getRangeAxis().getLowerMargin());
plot.getRangeAxis().setUpperBound(numericMax + adj * plot.getRangeAxis().getUpperMargin());
}
}
int discreteValueCount = pointTimeSeriesCollection.getDiscreteValueCount();
double interval = (numericMax - numericMin) / (discreteValueCount + 1);
int intervalIndex = 1;
if (pointTimeSeriesCollection.hasDiscreteData()) {
for (int i = 0; i < pointTimeSeriesCollection.getDiscreteSeriesCount(); i++) {
DiscreteTimeSeries dts = pointTimeSeriesCollection.getDiscreteTimeSeries(i);
XYStepRenderer renderer = new XYStepRenderer();
TimeSeries ts = new TimeSeries(dts.getName(), null, null);
for (IValueTime vt : dts.getValueTimes())
addMillisecond(
ts,
vt.getTime(),
numericMin + (interval * (dts.getValueIndex(vt.getValue()) + intervalIndex)));
if (dts.getPaint() != null) renderer.setSeriesPaint(0, dts.getPaint(), false);
if (dts.getStroke() != null) renderer.setSeriesStroke(0, dts.getStroke(), false);
plot.setDataset(
numericSeriesCount + i,
new TimeSeriesCollection(ts, pointTimeSeriesCollection.getTimeZone()));
plot.setRenderer(numericSeriesCount + i, renderer);
intervalIndex += dts.getDiscreteValueCount();
}
}
if (from > 0) plot.getDomainAxis().setLowerBound(from);
if (to > 0) plot.getDomainAxis().setUpperBound(to);
if (pointTimeSeriesCollection.hasDiscreteData()) {
// Add the value annotations.
double annoX = plot.getDomainAxis().getLowerBound();
intervalIndex = 1;
for (int i = 0; i < pointTimeSeriesCollection.getDiscreteSeriesCount(); i++) {
DiscreteTimeSeries dts = pointTimeSeriesCollection.getDiscreteTimeSeries(i);
for (int j = 0; j < dts.getDiscreteValueCount(); j++) {
XYTextAnnotation anno =
new XYTextAnnotation(
" " + dts.getValueText(j), annoX, numericMin + (interval * (j + intervalIndex)));
if (!pointTimeSeriesCollection.hasNumericData()
&& intervalIndex + j == discreteValueCount)
// This prevents the top label from getting cut off
anno.setTextAnchor(TextAnchor.TOP_LEFT);
else anno.setTextAnchor(TextAnchor.BOTTOM_LEFT);
anno.setPaint(
((AbstractRenderer) plot.getRenderer(numericSeriesCount + i)).lookupSeriesPaint(0));
plot.addAnnotation(anno);
}
intervalIndex += dts.getDiscreteValueCount();
}
}
// Return the image.
ChartUtilities.writeChartAsPNG(out, chart, width, height);
}