Question

我需要帮助改变甘特图中百分比条的颜色。我正在使用动态报告api生成pdf格式的报告。

我需要更改进度条的颜色，它始终显示为绿色，我想要更改它。

 private JasperReportBuilder build(){
 JasperReportBuilder report = DynamicReports.report();
 TextColumnBuilder<String> uName = col.column("Name", "name", type.stringType()).setHorizontalAlignment(HorizontalAlignment.LEFT);
            TextColumnBuilder<Date> uStart = col.column("Start", "start", type.dateType());
            TextColumnBuilder<Date> uEnd = col.column("End", "end", type.dateType());
            TextColumnBuilder<Double> uProgress = col.column("Progress", "progress", type.doubleType());

            GanttChartBuilder chart2 = cht.ganttChart().customizers(new ChartCustomizer())
                .setTask(uName)
                .series(
                    cht.ganttSerie()
                        .setStartDate(uStart)
                        .setEndDate(uEnd)
                        .setPercent(uProgress)
                        ).seriesColors(new Color(163,209,255)).setDataSource(createDataSourceForGanntChart(initiativeList,initiativeGroup,periodId,subPeriodId,fullPath,model))
                .setTimeAxisFormat(
                    cht.axisFormat().setLabel(objectInitiativeChart.getCategoryLabel()))
                .setTaskAxisFormat(
                    cht.axisFormat().setLabel(objectInitiativeChart.getSeriesLabel()));

                report.summary(chart2);
return report;
}

private class ChartCustomizer implements DRIChartCustomizer, Serializable {

  private static final long serialVersionUID = 1L;
    @Override
    public void customize(JFreeChart chart, ReportParameters reportParameters) {

    BarRenderer renderer = (BarRenderer) chart.getCategoryPlot().getRenderer();
    renderer.setMaximumBarWidth(0.1);
    org.jfree.chart.axis.CategoryAxis domainAxis = chart.getCategoryPlot().getDomainAxis();
    domainAxis.setCategoryLabelPositions(CategoryLabelPositions.createUpRotationLabelPositions(Math.PI / 6.0));
    domainAxis.setCategoryMargin(-0.5d);
  }

}

Answer 1

您需要将GanttRenderer转换为setCompletePaint(Color c)，因此现在您要转向BarRenderer

完整示例

添加图表自定义程序以获取JFreeChart对象。（注意您使用的是deprecated）

的集合

chart2.addCustomizer(new DRIChartCustomizer() {
    private static final long serialVersionUID = 1L;

    @Override
    public void customize(JFreeChart chart, ReportParameters arg) {
        //Here we got the JFreeChart object  and we can modify it as we like
        CategoryPlot plot = (CategoryPlot) chart.getPlot();
        //Cast to GanttRenderer
        GanttRenderer renderer = (GanttRenderer) plot.getRenderer();
        //Set colors as desired.
        renderer.setIncompletePaint(Color.CYAN);
        renderer.setCompletePaint(Color.MAGENTA);
    }
});

如何在动态报告中更改甘特图中百分比条的颜色？

1 个答案: