chamilo-lms2/main/inc/lib/ppt2png/OogieDocumentConverter.java

//
//DokeosConverter using JODConverter - Java OpenDocument Converter
//Eric Marguin <e.marguin@elixir-interactive.com>
//
//This library is free software; you can redistribute it and/or
//modify it under the terms of the GNU Lesser General Public
//License as published by the Free Software Foundation; either
//version 2.1 of the License, or (at your option) any later version.
//
//This library is distributed in the hope that it will be useful,
//but WITHOUT ANY WARRANTY; without even the implied warranty of
//MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
//Lesser General Public License for more details.
//http://www.gnu.org/copyleft/lesser.html
//

import java.util.Arrays;
import java.util.Map;

import org.apache.commons.io.FilenameUtils;

import com.artofsolving.jodconverter.DocumentConverter;
import com.artofsolving.jodconverter.DocumentFormatRegistry;
import com.artofsolving.jodconverter.openoffice.connection.OpenOfficeConnection;
import com.artofsolving.jodconverter.openoffice.connection.OpenOfficeException;
import com.artofsolving.jodconverter.openoffice.converter.StreamOpenOfficeDocumentConverter;
import com.sun.star.awt.Point;
import com.sun.star.beans.PropertyValue;
import com.sun.star.container.XNamed;
import com.sun.star.document.XExporter;
import com.sun.star.document.XFilter;
import com.sun.star.drawing.XDrawPage;
import com.sun.star.drawing.XDrawPages;
import com.sun.star.drawing.XDrawPagesSupplier;
import com.sun.star.drawing.XShape;
import com.sun.star.drawing.XShapes;
import com.sun.star.frame.XComponentLoader;
import com.sun.star.lang.XComponent;
import com.sun.star.lang.XMultiComponentFactory;
import com.sun.star.text.XText;
import com.sun.star.uno.UnoRuntime;

/**
 * Default file-based {@link DocumentConverter} implementation.
 * <p>
 * This implementation passes document data to and from the OpenOffice.org
 * service as file URLs.
 * <p>
 * File-based conversions are faster than stream-based ones (provided by
 * {@link StreamOpenOfficeDocumentConverter}) but they require the
 * OpenOffice.org service to be running locally and have the correct
 * permissions to the files.
 * 
 * @see StreamOpenOfficeDocumentConverter
 */
public class OogieDocumentConverter extends AbstractDokeosDocumentConverter {
	
	public OogieDocumentConverter(OpenOfficeConnection connection, int width, int height) {
		super(connection, width, height);
	}

	public OogieDocumentConverter(OpenOfficeConnection connection, DocumentFormatRegistry formatRegistry, int width, int height) {
		super(connection, formatRegistry, width, height);
	}

	protected void loadAndExport(String inputUrl, Map/*<String,Object>*/ loadProperties, String outputUrl, Map/*<String,Object>*/ storeProperties) throws Exception {
		XComponentLoader desktop = openOfficeConnection.getDesktop();
		XComponent document = desktop.loadComponentFromURL(inputUrl, "_blank", 0, toPropertyValues(loadProperties));
        if (document == null) {
            throw new OpenOfficeException("conversion failed: input document is null after loading");
        }
		
		refreshDocument(document);
		
		try {
			
			outputUrl = FilenameUtils.getFullPath(outputUrl)+FilenameUtils.getBaseName(outputUrl);
			
//			 filter
			PropertyValue[] loadProps = new PropertyValue[4];
			
			// type of image
			loadProps[0] = new PropertyValue();
			loadProps[0].Name = "MediaType";
			loadProps[0].Value = "image/png";
			
			// Height and width
			PropertyValue[] filterDatas = new PropertyValue[4];
			for(int i = 0; i<4 ; i++){
				filterDatas[i] = new PropertyValue();
			}
			
			filterDatas[0].Name = "PixelWidth";
			filterDatas[0].Value = new Integer(this.width);
			filterDatas[1].Name = "PixelHeight";
			filterDatas[1].Value = new Integer(this.height);
			filterDatas[2].Name = "LogicalWidth";
			
			filterDatas[2].Value = new Integer(2000);
			filterDatas[3].Name = "LogicalHeight";
			filterDatas[3].Value = new Integer(2000);
			
			
			XDrawPagesSupplier pagesSupplier = (XDrawPagesSupplier) UnoRuntime
			.queryInterface(XDrawPagesSupplier.class, document);
			//System.out.println(pagesSupplier.toString());				
			XDrawPages pages = pagesSupplier.getDrawPages();
			int nbPages = pages.getCount();
			String[] slidenames = new String[nbPages];
			Arrays.fill(slidenames,"");
			
			for (int i = 0; i < nbPages; i++) {
				
				XDrawPage page = (XDrawPage) UnoRuntime.queryInterface(
						com.sun.star.drawing.XDrawPage.class, pages
								.getByIndex(i));
				// get all the page shapes
				XShapes xShapes = (XShapes)UnoRuntime.queryInterface(XShapes.class, page);
				int top = 0;
				String slidename = "";
				String slidebody = "";
				String shapetext = "";
				for (int j = 0; j < xShapes.getCount(); j++) {
					XShape firstXshape = (XShape)UnoRuntime.queryInterface(XShape.class, xShapes.getByIndex(j));
					Point pos = firstXshape.getPosition();

					XText xText = (XText)UnoRuntime.queryInterface( XText.class, firstXshape );
					if(xText!=null && xText.getString().length()>0)
					{
						shapetext = xText.getString();
						// concatening all shape texts to later use
						slidebody += " " + shapetext;

						// get the top shape
						if(pos.Y < top || top==0)
						{
							top = pos.Y;
							slidename = shapetext;
						}
					}
				}

				// remove unwanted chars
				slidebody = slidebody.replaceAll("\n", " ");

				String slidenameDisplayed = "";
				if(slidename.trim().length()==0)
				{
					slidename = "slide"+(i+1);		
				}
				else
				{
					int nbSpaces = 0;
					String formatedSlidename = "";
					slidename = slidename.replaceAll(" ", "_");
					slidename = slidename.replaceAll("\n", "_");
					slidename = slidename.replaceAll("__", "_");
					
					for(int j=0 ; j<slidename.length() ; j++)
					{
						char currentChar = slidename.charAt(j);
						if(currentChar=='_')
						{
							nbSpaces++;
						}
						if(nbSpaces == 5)
						{
							break;
						}
						formatedSlidename += slidename.charAt(j);
					}
					

					slidenameDisplayed = formatedSlidename;
					
					slidename = formatedSlidename.toLowerCase();
					slidename = slidename.replaceAll("\\W", "_");
					slidename = slidename.replaceAll("__", "_");
					slidename = StringOperation.sansAccent(slidename);

				}
				int j=1;
				String slidenamebackup = slidename;
				Arrays.sort(slidenames);
				while(Arrays.binarySearch(slidenames, slidename)>=0)
				{
					j++;
					slidename = slidenamebackup+j;
				}
				slidenames[nbPages-(i+1)] = slidename;
				
				XNamed xPageName = (XNamed)UnoRuntime.queryInterface(XNamed.class,page);
				
				xPageName.setName(slidename);				
				
	            XMultiComponentFactory localServiceManager = ((DokeosSocketOfficeConnection)this.openOfficeConnection).getServiceManager();
				Object GraphicExportFilter = localServiceManager
						.createInstanceWithContext(
								"com.sun.star.drawing.GraphicExportFilter",
								((DokeosSocketOfficeConnection)this.openOfficeConnection).getComponentContext());
				
				XExporter xExporter = (XExporter) UnoRuntime
						.queryInterface(XExporter.class,
								GraphicExportFilter);

				XComponent xComp = (XComponent) UnoRuntime
						.queryInterface(XComponent.class, page);

				xExporter.setSourceDocument(xComp);
				loadProps[1] = new PropertyValue();
				loadProps[1].Name = "URL";
				
				
				
				loadProps[1].Value = outputUrl+"/"+xPageName.getName()+".png";
				loadProps[2] = new PropertyValue();
				loadProps[2].Name = "FilterData";
				loadProps[2].Value = filterDatas;
				loadProps[3] = new PropertyValue(); 
				loadProps[3].Name = "Quality"; 
				loadProps[3].Value = new Integer(100);
				
				XFilter xFilter = (XFilter) UnoRuntime.queryInterface(XFilter.class, GraphicExportFilter);

				xFilter.filter(loadProps);
				if(slidenameDisplayed=="")
					slidenameDisplayed = xPageName.getName();
				System.out.println(slidenameDisplayed+"||"+xPageName.getName()+".png"+"||"+slidebody);
				
			}
			
		} finally {
			document.dispose();
		}
	}
}