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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.
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package org.apache.poi.xslf.usermodel;
import org.apache.poi.POIXMLDocumentPart;
import org.apache.poi.ss.util.CellRangeAddress;
import org.apache.poi.ss.util.CellReference;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.openxmlformats.schemas.drawingml.x2006.chart.CTAxDataSource;
import org.openxmlformats.schemas.drawingml.x2006.chart.CTChart;
import org.openxmlformats.schemas.drawingml.x2006.chart.CTNumData;
import org.openxmlformats.schemas.drawingml.x2006.chart.CTNumDataSource;
import org.openxmlformats.schemas.drawingml.x2006.chart.CTNumVal;
import org.openxmlformats.schemas.drawingml.x2006.chart.CTPieChart;
import org.openxmlformats.schemas.drawingml.x2006.chart.CTPieSer;
import org.openxmlformats.schemas.drawingml.x2006.chart.CTPlotArea;
import org.openxmlformats.schemas.drawingml.x2006.chart.CTSerTx;
import org.openxmlformats.schemas.drawingml.x2006.chart.CTStrData;
import org.openxmlformats.schemas.drawingml.x2006.chart.CTStrVal;
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.OutputStream;
/**
* Build a pie chart from a template pptx
*
* @author Yegor Kozlov
*/
public class 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;
}
BufferedReader modelReader = new BufferedReader(new FileReader(args[1]));
String chartTitle = modelReader.readLine(); // first line is chart title
XMLSlideShow pptx = new XMLSlideShow(new FileInputStream(args[0]));
XSLFSlide slide = pptx.getSlides()[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");
// embedded Excel workbook that holds the chart data
POIXMLDocumentPart xlsPart = chart.getRelations().get(0);
XSSFWorkbook wb = new XSSFWorkbook();
XSSFSheet sheet = wb.createSheet();
CTChart ctChart = chart.getCTChart();
CTPlotArea plotArea = ctChart.getPlotArea();
CTPieChart pieChart = plotArea.getPieChartArray(0);
//Pie Chart Series
CTPieSer ser = pieChart.getSerArray(0);
// Series Text
CTSerTx tx = ser.getTx();
tx.getStrRef().getStrCache().getPtArray(0).setV(chartTitle);
sheet.createRow(0).createCell(1).setCellValue(chartTitle);
String titleRef = new CellReference(sheet.getSheetName(), 0, 1, true, true).formatAsString();
tx.getStrRef().setF(titleRef);
// Category Axis Data
CTAxDataSource cat = ser.getCat();
CTStrData strData = cat.getStrRef().getStrCache();
// Values
CTNumDataSource val = ser.getVal();
CTNumData numData = val.getNumRef().getNumCache();
strData.setPtArray(null); // unset old axis text
numData.setPtArray(null); // unset old values
// set model
int idx = 0;
int rownum = 1;
String ln;
while((ln = modelReader.readLine()) != null){
String[] vals = ln.split("\\s+");
CTNumVal numVal = numData.addNewPt();
numVal.setIdx(idx);
numVal.setV(vals[1]);
CTStrVal sVal = strData.addNewPt();
sVal.setIdx(idx);
sVal.setV(vals[0]);
idx++;
XSSFRow row = sheet.createRow(rownum++);
row.createCell(0).setCellValue(vals[0]);
row.createCell(1).setCellValue(Double.valueOf(vals[1]));
}
numData.getPtCount().setVal(idx);
strData.getPtCount().setVal(idx);
String numDataRange = new CellRangeAddress(1, rownum-1, 1, 1).formatAsString(sheet.getSheetName(), true);
val.getNumRef().setF(numDataRange);
String axisDataRange = new CellRangeAddress(1, rownum-1, 0, 0).formatAsString(sheet.getSheetName(), true);
cat.getStrRef().setF(axisDataRange);
// updated the embedded workbook with the data
OutputStream xlsOut = xlsPart.getPackagePart().getOutputStream();
wb.write(xlsOut);
xlsOut.close();
// save the result
FileOutputStream out = new FileOutputStream("pie-chart-demo-output.pptx");
pptx.write(out);
out.close();
}
}