org.apache.poi.examples.xslf.DoughnutChartFromScratch Maven / Gradle / Ivy
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* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing, software
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* See the License for the specific language governing permissions and
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package org.apache.poi.examples.xslf;
import org.apache.poi.ss.util.CellRangeAddress;
import org.apache.poi.util.Units;
import org.apache.poi.xddf.usermodel.chart.ChartTypes;
import org.apache.poi.xddf.usermodel.chart.LegendPosition;
import org.apache.poi.xddf.usermodel.chart.XDDFChartLegend;
import org.apache.poi.xddf.usermodel.chart.XDDFDataSource;
import org.apache.poi.xddf.usermodel.chart.XDDFDataSourcesFactory;
import org.apache.poi.xddf.usermodel.chart.XDDFDoughnutChartData;
import org.apache.poi.xddf.usermodel.chart.XDDFNumericalDataSource;
import org.apache.poi.xslf.usermodel.XMLSlideShow;
import org.apache.poi.xslf.usermodel.XSLFChart;
import org.apache.poi.xslf.usermodel.XSLFGraphicFrame;
import org.apache.poi.xslf.usermodel.XSLFShape;
import org.apache.poi.xslf.usermodel.XSLFSlide;
import java.awt.geom.Rectangle2D;
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.OutputStream;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.List;
/**
* Build a chart without reading template file
*/
@SuppressWarnings({"java:S106","java:S4823","java:S1192"})
public final class DoughnutChartFromScratch {
private DoughnutChartFromScratch() {}
private static void usage(){
System.out.println("Usage: DoughnutChartFromScratch ");
System.out.println(" bar-chart-data.txt the model to set. First line is chart title, " +
"then go pairs {axis-label value}");
}
public static void main(String[] args) throws Exception {
if(args.length < 1) {
usage();
return;
}
try (BufferedReader modelReader = Files.newBufferedReader(Paths.get(args[0]), StandardCharsets.UTF_8)) {
String chartTitle = modelReader.readLine(); // first line is chart title
String seriesText = modelReader.readLine();
String[] series = seriesText == null ? new String[0] : seriesText.split(",");
// Category Axis Data
List listLanguages = new ArrayList<>(10);
// Values
List listCountries = new ArrayList<>(10);
List listSpeakers = new ArrayList<>(10);
// set model
String ln;
while((ln = modelReader.readLine()) != null) {
String[] vals = ln.split(",");
listCountries.add(Double.valueOf(vals[0]));
listSpeakers.add(Double.valueOf(vals[1]));
listLanguages.add(vals[2]);
}
String[] categories = listLanguages.toArray(new String[0]);
Double[] values1 = listCountries.toArray(new Double[0]);
Double[] values2 = listSpeakers.toArray(new Double[0]);
try (XMLSlideShow ppt = new XMLSlideShow()) {
createSlideWithChart(ppt, chartTitle, series, categories, values1, COLUMN_COUNTRIES);
createSlideWithChart(ppt, chartTitle, series, categories, values2, COLUMN_SPEAKERS);
// save the result
try (OutputStream out = new FileOutputStream("doughnut-chart-from-scratch.pptx")) {
ppt.write(out);
}
}
try (FileInputStream is = new FileInputStream("doughnut-chart-from-scratch.pptx")) {
try (XMLSlideShow ppt = new XMLSlideShow(is)) {
for (XSLFSlide slide : ppt.getSlides()) {
for (XSLFShape shape : slide.getShapes()) {
if (shape instanceof XSLFGraphicFrame) {
XSLFGraphicFrame frame = (XSLFGraphicFrame) shape;
if (frame.hasChart()) {
System.out.println(frame.getChart().getTitleShape().getText());
}
}
}
}
}
}
}
System.out.println("Done");
}
private static void createSlideWithChart(XMLSlideShow ppt, String chartTitle, String[] series, String[] categories,
Double[] values, int valuesColumn) {
XSLFSlide slide = ppt.createSlide();
XSLFChart chart = ppt.createChart();
Rectangle2D rect2D = new java.awt.Rectangle(fromCM(1.5), fromCM(4), fromCM(22), fromCM(14));
slide.addChart(chart, rect2D);
setDoughnutData(chart, chartTitle, series, categories, values, valuesColumn);
}
private static int fromCM(double cm) {
return (int) (Math.rint(cm * Units.EMU_PER_CENTIMETER));
}
private static void setDoughnutData(XSLFChart chart, String chartTitle, String[] series, String[] categories,
Double[] values, int valuesColumn) {
final int numOfPoints = categories.length;
final String categoryDataRange = chart.formatRange(new CellRangeAddress(1, numOfPoints, COLUMN_LANGUAGES, COLUMN_LANGUAGES));
final String valuesDataRange = chart.formatRange(new CellRangeAddress(1, numOfPoints, valuesColumn, valuesColumn));
final XDDFDataSource categoriesData = XDDFDataSourcesFactory.fromArray(categories, categoryDataRange, COLUMN_LANGUAGES);
final XDDFNumericalDataSource valuesData = XDDFDataSourcesFactory.fromArray(values, valuesDataRange, valuesColumn);
valuesData.setFormatCode("General");
XDDFDoughnutChartData data = (XDDFDoughnutChartData) chart.createData(ChartTypes.DOUGHNUT, null, null);
XDDFDoughnutChartData.Series series1 = (XDDFDoughnutChartData.Series) data.addSeries(categoriesData, valuesData);
series1.setTitle(series[0], chart.setSheetTitle(series[valuesColumn - 1], valuesColumn));
data.setVaryColors(true);
data.setHoleSize(42);
data.setFirstSliceAngle(90);
chart.plot(data);
XDDFChartLegend legend = chart.getOrAddLegend();
legend.setPosition(LegendPosition.LEFT);
legend.setOverlay(false);
chart.setTitleText(chartTitle);
chart.setTitleOverlay(false);
chart.setAutoTitleDeleted(false);
}
private static final int COLUMN_LANGUAGES = 0;
private static final int COLUMN_COUNTRIES = 1;
private static final int COLUMN_SPEAKERS = 2;
}