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docx4j is a library which helps you to work with the Office Open XML file format as used in docx documents, pptx presentations, and xlsx spreadsheets.
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/*
 *  Copyright 2007-2008, Plutext Pty Ltd.
 *   
 *  This file is part of docx4j.

    docx4j is licensed 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.pptx4j.samples;


import javax.xml.bind.JAXBException;

import org.apache.log4j.Logger;
import org.docx4j.XmlUtils;
import org.pptx4j.jaxb.Context;
import org.docx4j.dml.STShapeType;
import org.docx4j.openpackaging.exceptions.InvalidFormatException;
import org.docx4j.openpackaging.packages.PresentationMLPackage;
import org.docx4j.openpackaging.parts.PartName;
import org.docx4j.openpackaging.parts.PresentationML.MainPresentationPart;
import org.docx4j.openpackaging.parts.PresentationML.SlideLayoutPart;
import org.docx4j.openpackaging.parts.PresentationML.SlidePart;
import org.pptx4j.pml.Shape;



/**
 * Generate a presentation consisting of all preset shapes.
 * 
 * We can save as HTML to get VML, or save as ODP to get SVG.
 * 
 * (Saving all slides as HTML crashes pptx 2007, but 12 slides
 *  at least seems to work)
 * 
 * 
 * @author jharrop
 *
 */
public class AutoShapes  {
	
	protected static Logger log = Logger.getLogger(AutoShapes.class);
		
	public static void main(String[] args) throws Exception {

		// Where will we save our new .ppxt?
		String outputfilepath = System.getProperty("user.dir") + "/sample-docs/pptx/AutoShapes.pptx";
		
		// Create skeletal package
		PresentationMLPackage presentationMLPackage = PresentationMLPackage.createPackage(); 
		
		MainPresentationPart pp = (MainPresentationPart)presentationMLPackage.getParts().getParts().get(
				new PartName("/ppt/presentation.xml"));
		
		SlideLayoutPart layoutPart = (SlideLayoutPart)presentationMLPackage.getParts().getParts().get(
				new PartName("/ppt/slideLayouts/slideLayout1.xml"));
		
		boolean noLine = false;
		
		/* ST_ShapeType has 203 values
		 * 
		 * Create a slide for each shape */
		int i = 1;  
		for (STShapeType st : STShapeType.values() ) {
		
			System.out.println("Adding slide for shape: " + st.value() );
			
			SlidePart slidePart = createSlidePart(pp, layoutPart, i);
			
			// Create and add shapes
			Shape title = ((Shape)XmlUtils.unmarshalString(
					getSlideTitle(st.value()), Context.jcPML) );
			slidePart.getJaxbElement().getCSld().getSpTree().getSpOrGrpSpOrGraphicFrame().add(title);
			
			
			Shape sample = ((Shape)XmlUtils.unmarshalString(
					getPresetShape(st.value(), noLine), Context.jcPML) );
			slidePart.getJaxbElement().getCSld().getSpTree().getSpOrGrpSpOrGraphicFrame().add(sample);
			
			i++;
		}
		// All done: save it
		presentationMLPackage.save(new java.io.File(outputfilepath));

		System.out.println("\n\n done .. saved " + outputfilepath);
		
	}	
	
	
	/**
	 * Create a slide and add it to the package
	 * 
	 * @param pp
	 * @param layoutPart
	 * @param i
	 * @return the slide
	 * @throws InvalidFormatException
	 * @throws JAXBException
	 */
	private static SlidePart createSlidePart(MainPresentationPart pp, SlideLayoutPart layoutPart, int i) 
		throws InvalidFormatException, JAXBException {
		
		// Slide part
		SlidePart slidePart = new SlidePart(new PartName("/ppt/slides/slide" + i +".xml") );
		pp.addSlideIdListEntry(slidePart);

		slidePart.setJaxbElement( SlidePart.createSld() );
		
		// Slide layout part
		slidePart.addTargetPart(layoutPart);
		
		return slidePart;
	}
	
	
	/**
	 * get XML for the specified present shape
	 * 
	 * @param preset
	 * @param noLine
	 * @return
	 */
	private static String getPresetShape(String preset, boolean noLine) {
		
		String txBody = "";
		String ln = "";
		
		// Shape will say "click here to add title"
		// if txBody is not present.
		// If txBody is present, shape will be invisible
		// unless a:ln is present
		if (!noLine) {
//			txBody = ""
//				+ ""
//				+ ""
//				+ ""
//					+ ""
//						+ ""
//						+ " "
//					+ ""
//					+ ""
//				+ ""
//			+ "";
			
			ln = ""
		            +""
		            	+""
		            +""
	            +"";
		}
				
		/*
		 * If you don't have a:ln, there will be no lines,
		 * so the shape will be invisible.
		 * 
		 * If you add , you'll get
		 * a title (and the dotted outline of the shape
		 * will be visible).
		 * 
		 * Without a p:txBody, the words "Click to
		 * add title" will appear. (maybe title because
		 * of our p:ph/@type?) 
		 * 
		 */
		
		
		return 
			""
				+ ""
					+ ""
					+ "" 
						//+ ""
					//+ ""
					+ ""
//						+ ""
//					+ ""
				+ ""
				+ ""
					+ ""
						+ ""
						+ ""
					+ ""
					+ ""
					+ ""
					+ ""
					+ ln
				+ ""
				+ txBody
		+ "";
	}
	
	private static String getSlideTitle(String preset) {
		return ""
		+ ""
		+ ""
		+ ""
			+ ""
		+ ""
		+ ""
			+ ""
		+ ""
	+ ""
	+ ""
	+ ""
		+ ""
		+ ""
		+ ""
			+ ""
				+ ""
				+ "" + preset + ""
			+ ""
			+ ""
		+ ""
	+ ""
+ "";	
	}	
}