java qr code reader library SEPARATOR CHUNKS in Java

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Listing 2.9 applied a dirty hack using negative leading to create a line layout with a Paragraph to the left (the English movie title) and a Paragraph to the right (the original movie title). I told you that s not the way it s should be done. Now let s have a look at the proper way to achieve this.
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Listing 2.20 DirectorOverview2.java
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director = PojoFactory.getDirector(rs); Paragraph p = new Paragraph( PojoToElementFactory.getDirectorPhrase(director)); p.add(new Chunk(new DottedLineSeparator())); p.add(String.format("movies: %d", rs.getInt("c"))); document.add(p); List list = new List(List.ORDERED); list.setIndentationLeft(36); list.setIndentationRight(36); TreeSet<Movie> movies = new TreeSet<Movie>( new MovieComparator(MovieComparator.BY_YEAR)); movies.addAll( PojoFactory.getMovies(connection, rs.getInt("id"))); ListItem movieitem; for (Movie movie : movies) { movieitem = new ListItem(movie.getMovieTitle()); movieitem.add(new Chunk(new VerticalPositionMark())); movieitem.add( new Chunk(String.valueOf(movie.getYear()))); if (movie.getYear() > 1999) { movieitem.add(PositionedArrow.RIGHT); } list.add(movieitem); } document.add(list);
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DottedLineSeparator wrapped in Chunk
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VerticalPositionMark wrapped in Chunk
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Listing 2.20 wraps a DottedLineSeparator in a Chunk and uses it to separate the name of a filmmaker from the number of movies they have directed. The DottedLineSeparator is a subclass of the LineSeparator, with the main difference being that it draws a dotted line instead of a solid line. You can also set the gap between the dots using the setGap() method. Some of the VerticalPositionMarks in figure 2.10 act as separators to distribute content over a line. The name of the class no longer applies you aren t adding a mark at a vertical position anymore. Instead you re using the object to separate the movie title from the year when the movie was produced. You could use multiple
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Adding Chunk, Phrase, Paragraph, and List objects
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Dotted line and other separators
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separators to distribute the title, the run length, and the production year: iText will look at the remaining white space for every line and distribute it equally over the number of separator Chunks. Another way to distribute the content of a line is to use tabs.
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TAB CHUNKS
Figure 2.11 shows how you can distribute the English movie title, the original title, the run length, and the year the movie was produced over one or more lines using tabs. If ordinary separator Chunks were used, the content wouldn t have been aligned in columns. One English movie title and its corresponding original title don t fit in the available space. A new line is used because of the way you ve defined the tab Chunk. If you
Chunks acting as tab positions
Using iText s basic building blocks
change true into false in the tab Chunk constructors, no line break will occur; the text will overlap instead.
Listing 2.21 DirectorOverview3.java
Chunk CONNECT = new Chunk(new LineSeparator( 0.5f, 95, BaseColor.BLUE, Element.ALIGN_CENTER, 3.5f)); LineSeparator UNDERLINE = new LineSeparator( 1, 100, null, Element.ALIGN_CENTER, -2); Chunk tab1 = new Chunk(new VerticalPositionMark(), 200, true); Chunk tab2 = new Chunk(new VerticalPositionMark(), 350, true); Tab at position Chunk tab3 = 200 for new Chunk(new DottedLineSeparator(), 450, true); original ... title director = PojoFactory.getDirector(rs); Paragraph p = new Paragraph( PojoToElementFactory.getDirectorPhrase(director)); p.add(CONNECT); p.add(String.format("movies: %d", rs.getInt("c"))); p.add(UNDERLINE); document.add(p); TreeSet<Movie> movies = new TreeSet<Movie>( new MovieComparator(MovieComparator.BY_YEAR)); movies.addAll( PojoFactory.getMovies(connection, rs.getInt("id"))); for (Movie movie : movies) { p = new Paragraph(movie.getMovieTitle()); p.add(new Chunk(tab1)); if (movie.getOriginalTitle() != null) p.add(new Chunk(movie.getOriginalTitle())); p.add(new Chunk(tab2)); p.add(new Chunk( String.valueOf(movie.getDuration()) + " minutes")); p.add(new Chunk(tab3)); p.add(new Chunk(String.valueOf(movie.getYear()))); document.add(p); } document.add(Chunk.NEWLINE);
Tab at position 350 for duration Tab at position 450 for year
You can use any DrawInterface to create a separator or tab Chunk, and you can use these Chunks to separate content horizontally (within a paragraph) or vertically (lines between paragraphs). Now it s time to discuss the other building blocks shown in the class diagram in figure 2.1.
Adding Anchor, Image, , and Section objects
In the previous examples, you ve used every field shown in the ERD in figure 2.2, except for one: the field named imdb. This field contains the ID for the movie on imdb.com, which is the Internet Movie Database (IMDB). Wouldn t it be nice to link to this external site from your documents And what kind of internal links could you add to a document If you browse the resources that
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