| 1 | // Jomic - a viewer for comic book archives. |
| 2 | // Copyright (C) 2004-2011 Thomas Aglassinger |
| 3 | // |
| 4 | // This program is free software: you can redistribute it and/or modify |
| 5 | // it under the terms of the GNU General Public License as published by |
| 6 | // the Free Software Foundation, either version 3 of the License, or |
| 7 | // (at your option) any later version. |
| 8 | // |
| 9 | // This program is distributed in the hope that it will be useful, |
| 10 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | // GNU General Public License for more details. |
| 13 | // |
| 14 | // You should have received a copy of the GNU General Public License |
| 15 | // along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 16 | package net.sf.jomic.comic; |
| 17 | |
| 18 | import java.awt.image.RenderedImage; |
| 19 | import java.io.ByteArrayInputStream; |
| 20 | import java.io.ByteArrayOutputStream; |
| 21 | import java.io.File; |
| 22 | import java.io.FileInputStream; |
| 23 | import java.io.IOException; |
| 24 | import java.io.InputStream; |
| 25 | import java.util.Map; |
| 26 | |
| 27 | import javax.imageio.ImageIO; |
| 28 | |
| 29 | import net.sf.jomic.tools.ImageTools; |
| 30 | import net.sf.jomic.tools.StringTools; |
| 31 | |
| 32 | import org.apache.commons.logging.Log; |
| 33 | import org.apache.commons.logging.LogFactory; |
| 34 | import org.apache.pdfbox.pdmodel.PDDocument; |
| 35 | import org.apache.pdfbox.pdmodel.PDPage; |
| 36 | import org.apache.pdfbox.pdmodel.common.PDRectangle; |
| 37 | import org.apache.pdfbox.pdmodel.edit.PDPageContentStream; |
| 38 | import org.apache.pdfbox.pdmodel.graphics.xobject.PDJpeg; |
| 39 | |
| 40 | /** |
| 41 | * Task to create a PDF comic from a set of image files. |
| 42 | * |
| 43 | * @author Thomas Aglassinger |
| 44 | */ |
| 45 | public class CreatePdfComicTask extends AbstractCreateComicTask |
| 46 | { |
| 47 | private static final double WEIGHT_READ = 0.3333; |
| 48 | private static final double WEIGHT_READ_AND_CONVERT = 0.6667; |
| 49 | |
| 50 | private ImageTools imageTools; |
| 51 | private Log logger; |
| 52 | private PDDocument pdfDocument; |
| 53 | private StringTools stringTools; |
| 54 | |
| 55 | public CreatePdfComicTask(File newSourceBaseDir, String[] newSourceFileNames, |
| 56 | Map newImageInfoMap, File newTargetPdfFile, Conversion newConversion) { |
| 57 | super(newSourceBaseDir, newSourceFileNames, newImageInfoMap, newTargetPdfFile, newConversion); |
| 58 | |
| 59 | logger = LogFactory.getLog(CreatePdfComicTask.class); |
| 60 | imageTools = ImageTools.instance(); |
| 61 | stringTools = StringTools.instance(); |
| 62 | } |
| 63 | |
| 64 | protected void setUpComic() |
| 65 | throws Exception { |
| 66 | pdfDocument = new PDDocument(); |
| 67 | } |
| 68 | |
| 69 | protected void addImageFile(String outName, File imageFile) |
| 70 | throws Exception { |
| 71 | assert outName != null; |
| 72 | assert imageFile != null; |
| 73 | |
| 74 | long imageFileLength = imageFile.length(); |
| 75 | long baseProgress = getProgress(); |
| 76 | String imageFormat = imageTools.getImageFormat(imageFile); |
| 77 | |
| 78 | if (imageFormat == null) { |
| 79 | if (logger.isInfoEnabled()) { |
| 80 | logger.info("ignore non-image: " + imageFile); |
| 81 | } |
| 82 | } else { |
| 83 | InputStream imageStream; |
| 84 | |
| 85 | if (logger.isInfoEnabled()) { |
| 86 | logger.info("add " + stringTools.sourced(imageFile)); |
| 87 | } |
| 88 | enableAddedAtLeastOneImage(); |
| 89 | |
| 90 | boolean isJpegImage = imageFormat.equals("jpeg"); |
| 91 | boolean needsTrim = getConversion().needsTrim(imageFile); |
| 92 | |
| 93 | if (!needsTrim && isJpegImage) { |
| 94 | // Use original JFIF/JPEG image. |
| 95 | imageStream = new FileInputStream(imageFile); |
| 96 | } else { |
| 97 | RenderedImage image = imageTools.readImage(imageFile); |
| 98 | |
| 99 | setProgress(baseProgress + Math.round(WEIGHT_READ * imageFileLength)); |
| 100 | if (needsTrim) { |
| 101 | image = getConversion().getTrimmed(image); |
| 102 | } |
| 103 | imageStream = createJpegStream(image); |
| 104 | } |
| 105 | setProgress(baseProgress + Math.round(WEIGHT_READ_AND_CONVERT * imageFileLength)); |
| 106 | |
| 107 | try { |
| 108 | PDPage page = new PDPage(); |
| 109 | PDJpeg jpeg = new PDJpeg(pdfDocument, imageStream); |
| 110 | PDPageContentStream contentStream = new PDPageContentStream(pdfDocument, page); |
| 111 | |
| 112 | try { |
| 113 | contentStream.drawImage(jpeg, 0, 0); |
| 114 | } finally { |
| 115 | contentStream.close(); |
| 116 | } |
| 117 | page.setMediaBox(new PDRectangle(jpeg.getWidth(), jpeg.getHeight())); |
| 118 | pdfDocument.addPage(page); |
| 119 | } finally { |
| 120 | imageStream.close(); |
| 121 | } |
| 122 | setProgress(baseProgress + imageFileLength + 1); |
| 123 | } |
| 124 | } |
| 125 | |
| 126 | protected void cleanUpComic() |
| 127 | throws Exception { |
| 128 | if (pdfDocument != null) { |
| 129 | try { |
| 130 | if (!isInterrupted() && hasAddedAtLeastOneImage()) { |
| 131 | pdfDocument.save(getTargetComicFile().getAbsolutePath()); |
| 132 | } |
| 133 | pdfDocument.close(); |
| 134 | } finally { |
| 135 | pdfDocument = null; |
| 136 | } |
| 137 | } |
| 138 | } |
| 139 | |
| 140 | private InputStream createJpegStream(RenderedImage image) |
| 141 | throws IOException { |
| 142 | InputStream result; |
| 143 | ByteArrayOutputStream jpegStream = new ByteArrayOutputStream(); |
| 144 | |
| 145 | try { |
| 146 | ImageIO.write(image, "jpeg", jpegStream); |
| 147 | |
| 148 | byte[] imageData = jpegStream.toByteArray(); |
| 149 | |
| 150 | result = new ByteArrayInputStream(imageData); |
| 151 | } finally { |
| 152 | jpegStream.close(); |
| 153 | } |
| 154 | return result; |
| 155 | } |
| 156 | } |