org.apache.poi.examples.xslf.SmartArtConversionDemo Maven / Gradle / Ivy
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package org.apache.poi.examples.xslf;
import org.apache.poi.ooxml.POIXMLDocumentPart;
import org.apache.poi.util.LocaleUtil;
import org.apache.poi.xslf.usermodel.*;
import org.openxmlformats.schemas.drawingml.x2006.main.CTBlip;
import org.openxmlformats.schemas.drawingml.x2006.main.CTBlipFillProperties;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.List;
/**
* Converts SmartArt to openxml shapes and saves the result to the specified output path.
*/
public class SmartArtConversionDemo {
private final XMLSlideShow inputPptx;
private final XMLSlideShow outputPptx;
SmartArtConversionDemo(XMLSlideShow inputPptx, XMLSlideShow outputPptx) {
this.inputPptx = inputPptx;
this.outputPptx = outputPptx;
}
public static void main(String[] args) throws IOException {
if (args.length != 2) {
System.out.println("Expected arguments: ");
System.exit(1);
}
File inputFile = new File(args[0]);
if (!inputFile.exists()) {
System.out.printf(LocaleUtil.getUserLocale(), "Unable to find input file at path: %s", args[0]);
System.exit(1);
}
try (
FileInputStream inputPptxStream = new FileInputStream(inputFile);
FileOutputStream outputPptxStream = new FileOutputStream(args[1])
) {
XMLSlideShow inputPptx = new XMLSlideShow(inputPptxStream);
XMLSlideShow outputPptx = new XMLSlideShow();
SmartArtConversionDemo demo = new SmartArtConversionDemo(inputPptx, outputPptx);
demo.convertSmartArt();
outputPptx.write(outputPptxStream);
}
}
private static void copyAndUpdateImageRelations(XSLFDiagram diagram, XSLFSlide outputSlide) throws IOException {
XSLFGroupShape inputGroupShape = diagram.getGroupShape();
for (XSLFShape shape : inputGroupShape.getShapes()) {
org.openxmlformats.schemas.presentationml.x2006.main.CTShape ctShape
= (org.openxmlformats.schemas.presentationml.x2006.main.CTShape) shape.getXmlObject();
if (ctShape.getSpPr().getBlipFill() == null) {
continue;
}
CTBlipFillProperties blipFillProps = ctShape.getSpPr().getBlipFill();
CTBlip blip = blipFillProps.getBlip();
// Relationships for SmartArt diagrams are stored in `drawing#.xml.rels`, not `slide#.xml.rels`.
POIXMLDocumentPart inputPicturePart = diagram.getDiagramDrawing().getRelationById(blip.getEmbed());
if (inputPicturePart == null || inputPicturePart.getPackagePart() == null) {
continue;
}
XSLFPictureData inputPictureData = new XSLFPictureData(inputPicturePart.getPackagePart());
// Copy the input image to the output slides and update the shape to reference the copied image
XMLSlideShow outputPptx = outputSlide.getSlideShow();
XSLFPictureData outputPictureData = outputPptx.addPicture(
inputPicturePart.getPackagePart().getInputStream(), inputPictureData.getType());
POIXMLDocumentPart.RelationPart outputRelation = outputSlide.addRelation(null, XSLFRelation.IMAGES, outputPictureData);
ctShape.getSpPr().getBlipFill().getBlip().setEmbed(outputRelation.getRelationship().getId());
}
}
private static XSLFTheme extractTheme(XMLSlideShow slideShow) {
if (!slideShow.getSlideMasters().isEmpty()) {
return slideShow.getSlideMasters().get(0).getTheme();
}
return null;
}
private void convertSmartArt() throws IOException {
// Copy page size and theme
outputPptx.setPageSize(inputPptx.getPageSize());
XSLFTheme theme = extractTheme(inputPptx);
if (theme != null) {
outputPptx.getSlideMasters().get(0).getTheme().getXmlObject().set(theme.getXmlObject());
}
for (XSLFSlide inputSlide : inputPptx.getSlides()) {
XSLFSlide outputSlide = outputPptx.createSlide();
List inputShapes = inputSlide.getShapes();
for (XSLFShape shape : inputShapes) {
if (shape instanceof XSLFDiagram) {
copyDiagramToOutput((XSLFDiagram) shape, outputSlide);
} else {
XSLFAutoShape autoShape = outputSlide.createAutoShape();
// Hacky hack. Reassign xml to copy the content over.
autoShape.getXmlObject().set(shape.getXmlObject());
}
}
}
}
private void copyDiagramToOutput(XSLFDiagram inputDiagram, XSLFSlide outputSlide) throws IOException {
// This method modifies the underlying xml of the input shapes. We modify the xml structure first, then
// assign that to our output shape.
copyAndUpdateImageRelations(inputDiagram, outputSlide);
XSLFGroupShape inputGroupShape = inputDiagram.getGroupShape();
XSLFGroupShape outputGroupShape = outputSlide.createGroup();
outputGroupShape.getXmlObject().set(inputGroupShape.getXmlObject());
}
}