text_output/distance_between_paragraphs
Control the distance between adjacent paragraphs. In many cases more distance between adjacent paragraphs is desired than between the lines within a paragraph. To achieve this use the "nextline", "leading", and "nextparagraph" options of add/create_textflow() to insert an extra empty line with a suitable leading value and then start a new paragraph with the initial leading.
Download Java Code Show Output PDF
* Distance between paragraphs:
* Control the distance between adjacent paragraphs
*
* In many cases more distance between adjacent paragraphs is desired than
* between the lines within a paragraph. To achieve this use the "nextline",
* "leading", and "nextparagraph" options of add/create_textflow() to insert an
* extra empty line with a suitable leading value and then start a new paragraph
* with the initial leading.
*
* Required software: PDFlib/PDFlib+PDI/PPS 7
* Required data: none
*/
package com.pdflib.cookbook.pdflib.text_output;
import com.pdflib.pdflib;
import com.pdflib.PDFlibException;
public class distance_between_paragraphs
{
public static void main (String argv[])
{
/* This is where the data files are. Adjust as necessary. */
String searchpath = "../input";
String outfile = "distance_between_paragraphs.pdf";
String title = "Distance between Paragraphs";
pdflib p = null;
int tf = -1;
String result, optlist;
try {
p = new pdflib();
p.set_parameter("SearchPath", searchpath);
/* This means we must check return values of load_font() etc. */
p.set_parameter("errorpolicy", "return");
/* Set an output path according to the name of the topic */
if (p.begin_document(outfile, "") == -1)
throw new Exception("Error: " + p.get_errmsg());
p.set_info("Creator", "PDFlib Cookbook");
p.set_info("Title", title + " $Revision: 1.1 $");
/* Create an A4 page */
p.begin_page_ext(0, 0, "width=a4.width height=a4.height");
/* Text to be created. Gain some additional space between the first
* and the second paragraph using the inline options
* <nextline leading=150%>. This will create an empty line with its
* baseline having a distance of 150% from the last line of the previous
* paragraph (where 100% equals the most recently set value of the font
* size).
* With <nextparagraph leading=120%> a new line is started and the
* leading is reset to the initial value (defined in the option list
* below).
*/
final String text =
"Our paper planes are the ideal way of passing the time. We " +
"offer revolutionary new developments of the traditional common " +
"paper planes. If your lesson, conference, or lecture turn out " +
"to be deadly boring, you can have a wonderful time with our " +
"planes. All our models are folded from one paper sheet. They " +
"are exclusively folded without using any adhesive. Several " +
"models are equipped with a folded landing gear enabling a safe " +
"landing on the intended location provided that you have aimed " +
"well. Other models are able to fly loops or cover long " +
"distances. Let them start from a vista point in the mountains " +
"and see where they touch the ground." +
"<nextline leading=150%><nextparagraph leading=120%>" +
"Have a look at our new paper plane models!" +
"<nextline leading=80%><nextparagraph leading=120%>" +
"Long Distance Glider: "+
"With this paper rocket you can send all your messages even when " +
"sitting in a hall or in the cinema pretty near the back. " +
"<nextline leading=80%><nextparagraph leading=120%>" +
"Giant Wing: " +
"An unbelievable sailplane! It is amazingly robust and can even " +
"do aerobatics. But it best suited to gliding." +
"<nextline leading=80%><nextparagraph leading=120%>" +
"Cone Head Rocket: " +
"This paper arrow can be thrown with big swing. We launched it " +
"from the roof of a hotel. It stayed in the air a long time and " +
"covered a considerable distance. " +
"<nextline leading=80%><nextparagraph leading=120%>" +
"Super Dart: " +
"The super dart can fly giant loops with a radius of 4 or 5 " +
"metres and cover very long distances. Its heavy cone point is " +
"slightly bowed upwards to get the lift required for loops." +
"<nextline leading=80%><nextparagraph leading=120%>";
/* Some more text to be added */
String moretext =
"German Bi-Plane: " +
"Brand-new and ready for take-off. If you have lessons in the " +
"history of aviation you can show your interest by letting it " +
"land on your teacher's desk.";
/* Option list to create the Textflow.
* The leading is initially set to 120%.
*/
optlist = "fontname=Helvetica fontsize=14 encoding=unicode " +
"fillcolor={gray 0} leading=120% alignment=justify";
/* Create the Textflow with the option list defined above */
tf = p.create_textflow(text, optlist);
if (tf == -1)
throw new Exception("Error: " + p.get_errmsg());
/* Option list to add some more text in violet color for distinction.
* The leading is initially set to 120%.
* With "nextline leading=150%" an empty line is created with a leading
* of 150%.
* With "nextparagraph leading=120%" a new line is started and the
* leading is reset to the initial value of 120%.
*/
optlist = "fontname=Helvetica fontsize=14 encoding=unicode " +
"fillcolor={rgb 0.95 0.5 0.95} leading=120% alignment=justify " +
"nextline leading=150% nextparagraph leading=120%";
/* Add some more text using the option list defined above */
tf = p.add_textflow(tf, moretext, optlist);
if (tf == -1)
throw new Exception("Error: " + p.get_errmsg());
/* Fit the Textflow */
result = p.fit_textflow(tf, 100, 100, 500, 700,
"verticalalign=justify linespreadlimit=120% ");
if (!result.equals("_stop"))
{
/* Check for errors */
}
p.delete_textflow(tf);
p.end_page_ext("");
p.end_document("");
} catch (PDFlibException e){
System.err.print("PDFlib exception occurred:\n");
System.err.print("[" + e.get_errnum() + "] " + e.get_apiname() +
": " + e.get_errmsg() + "\n");
} catch (Exception e) {
System.err.println(e.getMessage());
} finally {
if (p != null) {
p.delete();
}
}
}
}