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/*
* ====================================================================
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* 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
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ====================================================================
*/
package org.apache.poi.examples.xslf;
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;
import org.apache.poi.ooxml.POIXMLDocumentPart;
import org.apache.poi.ss.util.CellRangeAddress;
import org.apache.poi.xddf.usermodel.chart.XDDFChartData;
import org.apache.poi.xddf.usermodel.chart.XDDFDataSource;
import org.apache.poi.xddf.usermodel.chart.XDDFDataSourcesFactory;
import org.apache.poi.xddf.usermodel.chart.XDDFNumericalDataSource;
import org.apache.poi.xddf.usermodel.chart.XDDFPieChartData;
import org.apache.poi.xslf.usermodel.XMLSlideShow;
import org.apache.poi.xslf.usermodel.XSLFChart;
import org.apache.poi.xslf.usermodel.XSLFSlide;
/**
* Build a pie chart from a template pptx
*/
@SuppressWarnings({"java:S106","java:S4823","java:S1192"})
public final class PieChartDemo {
private PieChartDemo() {}
private static void usage(){
System.out.println("Usage: PieChartDemo <pie-chart-template.pptx> <pie-chart-data.txt>");
System.out.println(" pie-chart-template.pptx template with a pie chart");
System.out.println(" pie-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 < 2) {
usage();
return;
}
try (FileInputStream argIS = new FileInputStream(args[0]);
BufferedReader modelReader = Files.newBufferedReader(Paths.get(args[1]), StandardCharsets.UTF_8)) {
String chartTitle = modelReader.readLine(); // first line is chart title
try (XMLSlideShow pptx = new XMLSlideShow(argIS)) {
XSLFSlide slide = pptx.getSlides().get(0);
// find chart in the slide
XSLFChart chart = null;
for (POIXMLDocumentPart part : slide.getRelations()) {
if (part instanceof XSLFChart) {
chart = (XSLFChart) part;
break;
}
}
if(chart == null) {
throw new IllegalStateException("chart not found in the template");
}
// Series Text
List<XDDFChartData> series = chart.getChartSeries();
XDDFPieChartData pie = (XDDFPieChartData) series.get(0);
// Category Axis Data
List<String> listCategories = new ArrayList<>(3);
// Values
List<Double> listValues = new ArrayList<>(3);
// set model
String ln;
while((ln = modelReader.readLine()) != null){
String[] vals = ln.split("\\s+");
listCategories.add(vals[0]);
listValues.add(Double.valueOf(vals[1]));
}
String[] categories = listCategories.toArray(new String[0]);
Double[] values = listValues.toArray(new Double[0]);
final int numOfPoints = categories.length;
final String categoryDataRange = chart.formatRange(new CellRangeAddress(1, numOfPoints, 0, 0));
final String valuesDataRange = chart.formatRange(new CellRangeAddress(1, numOfPoints, 1, 1));
final XDDFDataSource<?> categoriesData = XDDFDataSourcesFactory.fromArray(categories, categoryDataRange);
final XDDFNumericalDataSource<? extends Number> valuesData = XDDFDataSourcesFactory.fromArray(values, valuesDataRange);
XDDFPieChartData.Series firstSeries = (XDDFPieChartData.Series) pie.getSeries(0);
firstSeries.replaceData(categoriesData, valuesData);
firstSeries.setTitle(chartTitle, chart.setSheetTitle(chartTitle, 0));
firstSeries.setExplosion(25L);
firstSeries.getDataPoint(1).setExplosion(35L);
chart.plot(pie);
// save the result
try (OutputStream out = new FileOutputStream("pie-chart-demo-output.pptx")) {
pptx.write(out);
}
}
}
}
}
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