- /*
- * ====================================================================
- * 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.AxisOrientation;
- import org.apache.poi.xddf.usermodel.chart.AxisPosition;
- import org.apache.poi.xddf.usermodel.chart.BarDirection;
- import org.apache.poi.xddf.usermodel.chart.XDDFBarChartData;
- 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.xslf.usermodel.XMLSlideShow;
- import org.apache.poi.xslf.usermodel.XSLFChart;
- import org.apache.poi.xslf.usermodel.XSLFSlide;
-
- /**
- * Build a bar chart from a template pptx
- */
- @SuppressWarnings({"java:S106","java:S4823","java:S1192"})
- public final class BarChartDemo {
- private BarChartDemo() {}
-
- private static void usage(){
- System.out.println("Usage: BarChartDemo <bar-chart-template.pptx> <bar-chart-data.txt>");
- System.out.println(" bar-chart-template.pptx template with a bar chart");
- 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 < 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
- String seriesText = modelReader.readLine();
- String[] series = seriesText == null ? new String[0] : seriesText.split(",");
-
- // Category Axis Data
- List<String> listLanguages = new ArrayList<>(10);
-
- // Values
- List<Double> listCountries = new ArrayList<>(10);
- List<Double> 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 pptx = new XMLSlideShow(argIS)) {
- XSLFSlide slide = pptx.getSlides().get(0);
- setBarData(findChart(slide), chartTitle, series, categories, values1, values2);
-
- XSLFChart chart = findChart(pptx.createSlide().importContent(slide));
- setColumnData(chart, "Column variant");
-
- // save the result
- try (OutputStream out = new FileOutputStream("bar-chart-demo-output.pptx")) {
- pptx.write(out);
- }
- }
- }
- }
-
- private static void setBarData(XSLFChart chart, String chartTitle, String[] series, String[] categories, Double[] values1, Double[] values2) {
- final List<XDDFChartData> data = chart.getChartSeries();
- final XDDFBarChartData bar = (XDDFBarChartData) data.get(0);
-
- 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, COLUMN_COUNTRIES, COLUMN_COUNTRIES));
- final String valuesDataRange2 = chart.formatRange(new CellRangeAddress(1, numOfPoints, COLUMN_SPEAKERS, COLUMN_SPEAKERS));
- final XDDFDataSource<?> categoriesData = XDDFDataSourcesFactory.fromArray(categories, categoryDataRange, COLUMN_LANGUAGES);
- final XDDFNumericalDataSource<? extends Number> valuesData = XDDFDataSourcesFactory.fromArray(values1, valuesDataRange, COLUMN_COUNTRIES);
- values1[6] = 16.0; // if you ever want to change the underlying data, it has to be done before building the data source
- final XDDFNumericalDataSource<? extends Number> valuesData2 = XDDFDataSourcesFactory.fromArray(values2, valuesDataRange2, COLUMN_SPEAKERS);
-
- XDDFChartData.Series series1 = bar.getSeries(0);
- series1.replaceData(categoriesData, valuesData);
- series1.setTitle(series[0], chart.setSheetTitle(series[0], COLUMN_COUNTRIES));
- XDDFChartData.Series series2 = bar.addSeries(categoriesData, valuesData2);
- series2.setTitle(series[1], chart.setSheetTitle(series[1], COLUMN_SPEAKERS));
-
- chart.plot(bar);
- chart.setTitleText(chartTitle);
- // chart.setTitleOverlay(overlay);
-
- // adjust font size for readability
- bar.getCategoryAxis().getOrAddTextProperties().setFontSize(11.5);
- chart.getTitle().getOrAddTextProperties().setFontSize(18.2);
- }
-
- private static void setColumnData(XSLFChart chart, String chartTitle) {
- // Series Text
- List<XDDFChartData> series = chart.getChartSeries();
- XDDFBarChartData bar = (XDDFBarChartData) series.get(0);
-
- // in order to transform a bar chart into a column chart, you just need to change the bar direction
- bar.setBarDirection(BarDirection.COL);
-
- // looking for "Stacked Bar Chart"? uncomment the following line
- // bar.setBarGrouping(BarGrouping.STACKED);
-
- // additionally, you can adjust the axes
- bar.getCategoryAxis().setOrientation(AxisOrientation.MAX_MIN);
- bar.getValueAxes().get(0).setPosition(AxisPosition.TOP);
- }
-
- private static XSLFChart findChart(XSLFSlide slide) {
- // 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");
- }
- return chart;
- }
-
- private static final int COLUMN_LANGUAGES = 0;
- private static final int COLUMN_COUNTRIES = 1;
- private static final int COLUMN_SPEAKERS = 2;
- }
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