I am having problem in Transparency of area in area chart ?

[akhilgangwarmpec]

I am facing a problem when i do a area chart through jasper.

 

The problem is that when multiple areas are there in the area chart section ,one is overrided by the next one.So the previous one is not visble.

 

It seems to be an issue of transperancy of colours used.

 

below is piece of code 

 

 

public class StatsChartCustomiser extends JRAbstractChartCustomizer implements JRChartCustomizer {

 

public void customize(final JFreeChart jFreeChart, final JRChart jasperChart) {

Plot plot = jFreeChart.getPlot();

jFreeChart.getCategoryPlot().getRenderer().getPlot().setForegroundAlpha(0.5f);

jasperChart.getPlot().setForegroundAlpha(0.5f);

if (plot instanceof CategoryPlot) {

CategoryPlot categoryPlot = (CategoryPlot) plot;

CategoryItemRenderer renderer = categoryPlot.getRenderer();

renderer.setSeriesPaint(0, Color.blue);

renderer.setSeriesPaint(1, Color.red);

renderer.setSeriesPaint(2, Color.green);

categoryPlot.setDomainGridlinePaint(Color.LIGHT_GRAY);

categoryPlot.setRangeGridlinePaint(Color.LIGHT_GRAY);

categoryPlot.setDomainGridlinesVisible(true);

categoryPlot.setForegroundAlpha(0.5f);

categoryPlot.getForegroundAlpha();

CategoryAxis xAxis = categoryPlot.getDomainAxis();

Font tickLabelFont = xAxis.getTickLabelFont();

ChartFrame frame1=new ChartFrame("Area Chart",jFreeChart);

frame1.setVisible(true);

//frame1.setOpacity((float) .5);

// category labels in category charts with lots of tick marks are

// unreadable, so reduce font size (think a JFreeChart bug)

xAxis.setTickLabelFont(tickLabelFont.deriveFont(8f));

ValueAxis yAxis = categoryPlot.getRangeAxis();

xAxis.setCategoryLabelPositions(CategoryLabelPositions.createUpRotationLabelPositions(Math.PI / 2.0)); // vertical

yAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());

jasperChart.getParentProperties();

JRChartPlot jasperplot = jasperChart.getPlot();

System.out.println("before----    "+jasperplot.getForegroundAlpha());

jasperplot.setForegroundAlpha(0.5f);

System.out.println("after----    "+jasperplot.getForegroundAlpha());

jasperplot.getForegroundAlpha();

 

 

} else if (plot instanceof XYPlot) {

XYPlot xyPlot = (XYPlot) plot;

XYItemRenderer renderer = xyPlot.getRenderer();

renderer.setSeriesPaint(0, Color.blue);

xyPlot.setDomainGridlinePaint(Color.LIGHT_GRAY);

xyPlot.setRangeGridlinePaint(Color.LIGHT_GRAY);

ValueAxis xAxis = xyPlot.getDomainAxis();

NumberAxis yAxis = (NumberAxis) xyPlot.getRangeAxis();

yAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());

xAxis.setVerticalTickLabels(true);

if (xAxis instanceof DateAxis) {

DateAxis dateAxis = (DateAxis) xAxis;

SimpleDateFormat sdf = new SimpleDateFormat("dd MMMM yyyy");

String interval = (String) getParameterValue("Interval");

if ("Day".equals(interval)) {

sdf.applyPattern("HH:mm");

// strange, but the range seems to comes out wrong for Day (comes out as 23:00 - 01:00 ???) unless explicitly set

String fromDateString = (String) getParameterValue("FromDate");

DateFormat dfdt = new SimpleDateFormat(Bof2Constants.CALENDAR_WIDGET_DATE_TIME_FORMAT);

// set hours,min,sec to 0 in FromDate to get the start time for the x axis

try {

Date fromDate = dfdt.parse(fromDateString);

Calendar cal = Calendar.getInstance();

cal.setTime(fromDate);

cal.set(Calendar.HOUR_OF_DAY, 0);

cal.set(Calendar.MINUTE, 0);

cal.set(Calendar.SECOND, 0);

cal.set(Calendar.MILLISECOND, 0);

Date startOfDay = cal.getTime();

cal.set(Calendar.HOUR_OF_DAY, 23);

cal.set(Calendar.MINUTE, 59);

cal.set(Calendar.SECOND, 59);

cal.set(Calendar.MILLISECOND, 999);

Date endOfDay = cal.getTime(); 

dateAxis.setRange(startOfDay, endOfDay);

SegmentedTimeline timeline = new SegmentedTimeline(Bof2Constants.MILLISECS_IN_AN_HOUR, 24, 0);

timeline.setStartTime(fromDate.getTime() - 1);

dateAxis.setTimeline(timeline);

} catch (ParseException e) {

log.error("Failed to parse fromDateString:" + fromDateString + " for StatsChartReport by Day");

}

}

int tickInterval = ((Integer) getParameterValue("TickInterval")).intValue();

int tickIntervalCount = ((Integer) getParameterValue("TickIntervalCount")).intValue();

dateAxis.setTickUnit(new DateTickUnit(tickInterval, tickIntervalCount, sdf));

dateAxis.setAutoTickUnitSelection(false);

}

}

}

 

}