uk.ac.ebi.biostudies.file.thumbnails.DOCXThumbnail.java Source code

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Here is the source code for uk.ac.ebi.biostudies.file.thumbnails.DOCXThumbnail.java

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/*
 * Copyright 2009-2016 European Molecular Biology Laboratory
 *
 * 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 uk.ac.ebi.biostudies.file.thumbnails;

import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDPage;
import org.apache.pdfbox.util.ImageIOUtil;
import org.apache.poi.xwpf.converter.pdf.PdfConverter;
import org.apache.poi.xwpf.converter.pdf.PdfOptions;
import org.apache.poi.xwpf.usermodel.XWPFDocument;

import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

public class DOCXThumbnail implements IThumbnail {

    private static String[] supportedTypes = { "docx" };

    @Override
    public String[] getSupportedTypes() {
        return supportedTypes;
    }

    @Override
    public void generateThumbnail(String sourceFilePath, File thumbnailFile) throws IOException {
        //TODO: Confirm licence
        //convert word to pdf
        String tempPDFFilePath = thumbnailFile.getAbsolutePath() + ".pdf";
        FileInputStream in = new FileInputStream(sourceFilePath);
        FileOutputStream out = new FileOutputStream(tempPDFFilePath);
        XWPFDocument wordDoc = new XWPFDocument(in);
        PdfConverter.getInstance().convert(wordDoc, out, PdfOptions.create());
        in.close();
        out.close();
        //convert pdf to image
        PDPage page = (PDPage) PDDocument.load(tempPDFFilePath).getDocumentCatalog().getAllPages().get(0);
        BufferedImage image = page.convertToImage(BufferedImage.TYPE_INT_RGB, 96);
        ImageIOUtil.writeImage(image, thumbnailFile.getAbsolutePath(), 96);
        new File(tempPDFFilePath).delete();
    }

}