src/main/java/eu/svjatoslav/meviz/htmlindexer/layouts/MixedLayout.java

   1 /*
   2  * Meviz - Various tools collection to work with multimedia.
   3  * Copyright (C) 2012 -- 2019, Svjatoslav Agejenko, svjatoslav@svjatoslav.eu
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of version 3 of the GNU Lesser General Public License
   7  * or later as published by the Free Software Foundation.
   8 */
   9
  10 package eu.svjatoslav.meviz.htmlindexer.layouts;
  11
  12 import eu.svjatoslav.commons.file.FilePathParser;
  13 import eu.svjatoslav.meviz.htmlindexer.indexer.AbstractIndexer;
  14 import eu.svjatoslav.meviz.htmlindexer.Constants;
  15 import eu.svjatoslav.meviz.htmlindexer.IndexingContext;
  16 import eu.svjatoslav.meviz.htmlindexer.metadata.Dimension;
  17 import eu.svjatoslav.meviz.htmlindexer.metadata.DirectoryMetadata;
  18 import eu.svjatoslav.meviz.htmlindexer.metadata.fileTypes.AbstractFile;
  19 import eu.svjatoslav.meviz.htmlindexer.metadata.fileTypes.Picture;
  20 import eu.svjatoslav.meviz.htmlindexer.metadata.fileTypes.Video;
  21 import org.apache.log4j.Logger;
  22
  23 import java.io.IOException;
  24 import java.util.List;
  25
  26 import static eu.svjatoslav.commons.file.FilePathParser.getFileNameWithoutExtension;
  27 import static eu.svjatoslav.meviz.htmlindexer.Utils.urlEncode;
  28
  29 public class MixedLayout implements Layout {
  30
  31     public static final String encoding = "UTF-8";
  32
  33     private final Logger logger = Logger.getLogger(MixedLayout.class);
  34
  35     private StringBuffer dirHtml = new StringBuffer();
  36
  37     private StringBuffer filesHtml = new StringBuffer();
  38
  39     private String galleryTitle;
  40
  41     private List<String> path;
  42
  43     private AbstractIndexer indexer;
  44
  45     private IndexingContext indexingContext;
  46
  47     @Override
  48     public void enlistDirectory(final AbstractFile directory,
  49                                 final DirectoryMetadata parentDirectoryMetadata) {
  50         dirHtml.append("<TR>");
  51         dirHtml.append("<TD><b><a href=\""
  52                 + indexer.getDirectoryUrl(directory, indexingContext)
  53                 + "\"><h2> ==&gt; " + directory.fileName + "</h2></a></b></TD>");
  54         dirHtml.append("</TR>\n");
  55
  56     }
  57
  58     @Override
  59     public void enlistFile(final AbstractFile file,
  60                            final DirectoryMetadata parentDirectoryMetadata) {
  61
  62         final String fullFileName = file.fileName;
  63
  64         filesHtml.append("<div style=\"clear: both;\"><a href=\""
  65                 + indexingContext.getGlobalUrl()
  66                 + urlEncode(indexingContext.getLocalUrl() + "/"
  67                 + fullFileName) + "\">" + fullFileName + "</a>\n");
  68         filesHtml.append("&nbsp;&nbsp;("
  69                 + FilePathParser.getFileSizeDescription(file.getFileLength())
  70                 + ")</div><br/>\n");
  71
  72     }
  73
  74     @Override
  75     public void enlistImage(final Picture picture,
  76                             final DirectoryMetadata parentDirectoryMetadata) {
  77         try {
  78             enlistImageInternal(picture);
  79         } catch (final Exception e) {
  80             logger.error(
  81                     "Error generating thumbnails for image file: "
  82                             + e.toString()
  83                             + ", thumbnail generation skipped, enlisting as ordinary file instead.",
  84                     e);
  85             enlistFile(picture, parentDirectoryMetadata);
  86         }
  87     }
  88
  89     private String enlistImageDimensions(final Picture picture) {
  90         final StringBuilder html = new StringBuilder();
  91
  92         final List<Dimension> recommendedDimensions = Picture
  93                 .getThumbnailDimensions(picture.getDimensions());
  94
  95         int count = 0;
  96         for (final Dimension dimension : recommendedDimensions) {
  97             count++;
  98             if (count > 1)
  99                 html.append(", ");
 100             html.append("<a href=\""
 101                     + indexer.getThumbnailUrl(picture, dimension,
 102                     indexingContext) + "\">");
 103             html.append(dimension.width + "x" + dimension.height);
 104             html.append("</a>");
 105         }
 106
 107         return html.toString();
 108     }
 109
 110     private void enlistImageInternal(final Picture picture) {
 111
 112         filesHtml.append("<div style=\"float:left; margin: 10px;\">");
 113
 114         // clickable image thumbnail
 115         filesHtml.append("<a href=\""
 116                 + indexingContext.getGlobalUrl()
 117                 + urlEncode(indexingContext.getLocalUrl() + "/"
 118                 + picture.fileName) + "\">\n");
 119
 120         filesHtml.append("<img border=\"0\" src=\""
 121                 + getImageThumbnailUrl(picture) + "\"/></a><br/>\n");
 122
 123         // file name
 124         filesHtml.append("<b>"
 125                 + getFileNameWithoutExtension(picture.fileName)
 126                 + "</b><br/>");
 127
 128         // links to thumbnails of various sizes
 129         filesHtml.append("(" + enlistImageDimensions(picture) + ")\n");
 130
 131         filesHtml.append("</div>");
 132     }
 133
 134     /**
 135      * {@inheritDoc}
 136      */
 137     @Override
 138     public String getFileNameSuffix() {
 139         return "";
 140     }
 141
 142     /**
 143      * {@inheritDoc}
 144      *
 145      * @throws IOException
 146      */
 147     @Override
 148     public String getHtml(final boolean showTitle,
 149                           final boolean doHtmlHeaderAndFooter,
 150                           final DirectoryMetadata directory) {
 151
 152         // assemble final page HTML
 153         final StringBuilder html = new StringBuilder();
 154
 155         if (doHtmlHeaderAndFooter)
 156             appendHtmlHeader(html);
 157
 158         if (showTitle)
 159             html.append("<CENTER><H1>" + galleryTitle + "</H1></CENTER>\n");
 160
 161         html.append(showCurrentPath());
 162         html.append(listDirectories());
 163         html.append(directory.getHeaderMevizMetadataHtml());
 164         html.append(filesHtml.toString());
 165
 166         if (doHtmlHeaderAndFooter)
 167             appendHtmlFooter(html);
 168
 169         return html.toString();
 170     }
 171
 172     private void appendHtmlFooter(StringBuilder html) {
 173         html.append("</font></BODY></HTML>\n");
 174     }
 175
 176     private void appendHtmlHeader(StringBuilder html) {
 177         // page header
 178         html.append("<HTML>\n");
 179         html.append("<HEAD>\n");
 180         html.append("    <meta HTTP-EQUIV=\"Content-Type\" CONTENT=\"text/html; charset=UTF-8\"/>\n");
 181         html.append("</HEAD>\n");
 182         html.append("<BODY bgcolor=\"#000000\" alink=\"#50ffff\" link=\"#50ffff\" vlink=\"#ff50ff\" text=\"#ffffff\">\n");
 183         html.append("<!-- " + Constants.HTML_MAGIC_STRING + " -->\n");
 184         html.append("<!-- " + Constants.HTML_MEMO + " -->\n");
 185         html.append("<font color=\"#ffffff\">\n");
 186     }
 187
 188     private String getImageThumbnailUrl(final Picture picture) {
 189         final Dimension imageSize = picture.getDimensions();
 190
 191         Dimension listingDimension = new Dimension(1500, 450);
 192
 193         if (listingDimension.width > imageSize.width)
 194             if (listingDimension.height > imageSize.height)
 195                 listingDimension = imageSize;
 196
 197         return indexer.getThumbnailUrl(picture, listingDimension,
 198                 indexingContext);
 199     }
 200
 201     @Override
 202     public void init(final String galleryTitle, final List<String> path,
 203                      final AbstractIndexer indexer, final IndexingContext indexingContext) {
 204
 205         this.indexer = indexer;
 206         this.galleryTitle = galleryTitle;
 207         this.path = path;
 208         this.indexingContext = indexingContext;
 209
 210         dirHtml = new StringBuffer();
 211         filesHtml = new StringBuffer();
 212     }
 213
 214     private String listDirectories() {
 215         final StringBuilder html = new StringBuilder();
 216         html.append("<TABLE>\n");
 217
 218         if (path.size() > 0) {
 219             html.append("<TR>");
 220             html.append("<TD><b><a href=\""
 221                     + indexer.getParentDirectoryUrl(indexingContext)
 222                     + "\"><h2> &lt;== parent directory</h2></a></b></TD>");
 223             html.append("</TR>\n");
 224         }
 225
 226         html.append(dirHtml.toString());
 227         html.append("\n<TR><TD><br></TD></TR>\n");
 228         html.append("</TABLE>\n");
 229
 230         return html.toString();
 231     }
 232
 233     private String showCurrentPath() {
 234         final StringBuilder html = new StringBuilder();
 235         html.append("<CENTER><H2>");
 236         for (final String p : path)
 237             html.append(" / " + p);
 238         html.append("</H2></CENTER>\n");
 239
 240         return html.toString();
 241     }
 242
 243     @Override
 244     public void enlistVideo(Video video) {
 245
 246         filesHtml.append("<div style=\"margin: 30px; clear: both;\">\n");
 247
 248         // watchable video
 249         filesHtml.append("  <video width=\"640\" controls>\n");
 250         filesHtml.append("    <source src=\"" + getFileUrl(video) + "\" type=\"" + video.mimeType + "\"/>\n");
 251         filesHtml.append("  </video>\n");
 252
 253         filesHtml.append("  <br/>\n");
 254
 255         // video title
 256         filesHtml.append("  Video: <b>"
 257                         + getFileNameWithoutExtension(video.fileName)
 258                         + "<b/>  &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;");
 259
 260         // video download link
 261         filesHtml.append("  <a href=\"" + getFileUrl(video) + "\">download</a>\n");
 262
 263         filesHtml.append("</div>\n");
 264
 265         filesHtml.append("\n");
 266     }
 267
 268
 269     private String getFileUrl(AbstractFile file) {
 270         return indexingContext.getGlobalUrl()
 271                     + urlEncode(indexingContext.getLocalUrl() + "/"
 272                     + file.fileName);
 273     }
 274 }