textflow/numbered_list
Output numbered lists with the numbers left- or right-aligned.
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/*
* Numbered list:
* Output numbered lists with the numbers left- or right-aligned
*
* Create a numbered list with the numbers left-aligned. Use the "leftindent"
* option of add_textflow() with "leftindent=0%" for adding the item number and
* "leftindent=10%" for adding the item text.
*
* Create a numbered list with the numbers right-aligned.
* Output the number using a right-aligned tabulator specified by the options
* "hortabmethod=ruler", "ruler=3%", and "tabalignment=right". Use the
* "leftindent" option of add_textflow() with "leftindent=10%" for adding the
* item text.
* Setting and resetting the indentation value is cumbersome, especially since
* it is required for each paragraph. A more elegant solution creates a
* numbered list by defining a macro called "list" containing inline options
* to be supplied inline in the Textflow.
*
* Required software: PDFlib/PDFlib+PDI/PPS 10
* Required data: none
*/
package com.pdflib.cookbook.pdflib.textflow;
import com.pdflib.pdflib;
import com.pdflib.PDFlibException;
public class numbered_list
{
public static void main (String argv[])
{
/* This is where the data files are. Adjust as necessary. */
String searchpath = "../input";
String outfile = "numbered_list.pdf";
String title = "numbered_list";
pdflib p = null;
int tf = -1, i;
final double llx=50, lly=200, urx=500, ury=700;
String result;
String head_optlist, num_optlist, item_optlist;
int exitcode = 0;
head_optlist =
"fontname=NotoSerif-Bold fontsize=14 fillcolor={cmyk 1 0.5 0.2 0}";
final String numbers [] = {
"I", "II", "III", "IV"
};
final String items [] = {
"Long Distance Glider\nWith this paper rocket you can send all your" +
"messages even when sitting in a hall or in the cinema pretty near " +
"the back.",
"Giant Wing\nAn unbelievable sailplane! It is amazingly robust and " +
"can even do aerobatics. But it best suited to gliding.",
"Cone Head Rocket\nThis 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.",
"Super Dart\nThe super dart can fly giant loops with a radius of 4 " +
"or 5 meters and cover very long distances. Its heavy cone point is " +
"slightly bowed upwards to get the lift required for loops."
};
try {
p = new pdflib();
p.set_option("searchpath={" + searchpath + "}");
/* This means we must check return values of begin_document() etc. */
p.set_option("errorpolicy=return");
if (p.begin_document(outfile, "") == -1)
throw new Exception("Error: " + p.get_errmsg());
p.set_info("Creator", "PDFlib Cookbook");
p.set_info("Title", title);
/* ----------------------------------------------------
* Create a numbered list with the numbers left-aligned
* ----------------------------------------------------
*/
p.begin_page_ext(0, 0, "width=a4.width height=a4.height");
/* Create the Textflow. First, add a heading */
tf = p.add_textflow(tf, "Page 1: Numbered list with the numbers " +
"left-aligned", head_optlist);
/* Set general options for the following text */
tf = p.add_textflow(tf, "",
"fontname=NotoSerif-Regular fontsize=12 charref " +
"alignment=justify leading=140% ");
if (tf == -1)
throw new Exception("Error: " + p.get_errmsg());
/* Add list numbers and list items. Use the "leftindent=0%" and
* "leftindent=10%" options to indent the item's text by 0% or 10% of
* the width of the Textflow's fitbox.
*/
num_optlist = "fillcolor={cmyk 1 0.5 0.2 0} leftindent=0%";
item_optlist = "fillcolor={gray 0} leftindent=10%";
for (i = 0; i < 4; i++) {
tf = p.add_textflow(tf, "\n\n" + numbers[i], num_optlist);
if (tf == -1)
throw new Exception("Error: " + p.get_errmsg());
tf = p.add_textflow(tf, items[i], item_optlist);
if (tf == -1)
throw new Exception("Error: " + p.get_errmsg());
}
/* Place the Textflow */
result = p.fit_textflow(tf, llx, lly, urx, ury, "");
if (!result.equals("_stop")) {
/* Check for further action */
}
p.delete_textflow(tf);
p.end_page_ext("");
/* -----------------------------------------------------
* Create a numbered list with the numbers right-aligned
* -----------------------------------------------------
*/
p.begin_page_ext(0, 0, "width=a4.width height=a4.height");
tf = -1;
/* Create the Textflow. First, add a heading */
tf = p.add_textflow(tf, "Page 2: Numbered list with the numbers " +
"right-aligned", head_optlist);
if (tf == -1)
throw new Exception("Error: " + p.get_errmsg());
/* Set general text options.
*
* Define the settings of a tabulator. Use "hortabmethod=ruler" and
* "ruler=3%" to specify the tabulator's position as 3% of the width of
* the Textflow's fitbox. Use "tabalignment=right" for the tabulator to
* be right-aligned.
*/
tf = p.add_textflow(tf, "",
"fontname=NotoSerif-Regular fontsize=12 charref " +
"alignment=justify leading=140% " +
"hortabmethod=ruler ruler=3% tabalignment=right");
if (tf == -1)
throw new Exception("Error: " + p.get_errmsg());
/* Set list number options */
num_optlist =
"fillcolor={cmyk 1 0.5 0.2 0} leftindent=0%";
/* Set list item options */
item_optlist =
"fillcolor={gray 0} leftindent=10%";
/* Add the list with its numbers and items to the Textflow */
for (i = 0; i < 4; i++) {
tf = p.add_textflow(tf, "\n\n\t" + numbers[i], num_optlist);
if (tf == -1)
throw new Exception("Error: " + p.get_errmsg());
tf = p.add_textflow(tf, items[i], item_optlist);
if (tf == -1)
throw new Exception("Error: " + p.get_errmsg());
}
/* Place the Textflow */
result = p.fit_textflow(tf, llx, lly, urx, ury, "");
if (!result.equals("_stop")) {
/* Check for further action */
}
p.delete_textflow(tf);
p.end_page_ext("");
/* -----------------------------------
* Create a numbered list using macros
* -----------------------------------
*/
p.begin_page_ext(0, 0, "width=a4.width height=a4.height");
tf = -1;
/* Add a heading line */
p.fit_textline("Page 3: Numbered list using macros of inline options",
llx, ury-17, head_optlist);
/* Setting and resetting the indentation value is cumbersome, especially
* since it is required for each paragraph. A more elegant solution
* defines a macro called "list". For convenience it defines a macro
* "indent" which is used as a constant.
* The "leftindent" option specifies the distance from the left margin.
* The "parindent" option, which is set to the negative of "leftindent",
* cancels the indentation for the first line of each paragraph.
* The options "hortabsize", "hortabmethod", and "ruler" specify a tab
* stop which corresponds to "leftindent". It makes the text after the
* number to be indented with the amount specified in "leftindent".
* Furthermore, the Textflow contains the tab stops.
*/
String text =
"<macro " +
"{indent {22} " +
"list {parindent=-&indent leftindent=&indent hortabsize=&indent " +
"hortabmethod=ruler ruler={&indent}}" +
"}><&list>" +
"1.\tLong Distance Glider<nextline>With this paper rocket you " +
"can send all your messages even when sitting in a hall or in " +
"the cinema pretty near the back.\n\n" +
"2.\tGiant Wing<nextline>An unbelievable sailplane! It is " +
"amazingly robust and can even do aerobatics. But it is best " +
"suited to gliding.\n\n" +
"3.\tCone Head Rocket<nextline>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.\n\n" +
"4.\tSuper Dart<nextline>The super dart can fly giant loops " +
"with a radius of 4 or 5 meters and cover very long distances. " +
"Its heavy cone point is slightly bowed upwards to get the lift " +
"required for loops.";
String optlist =
"fontname=NotoSerif-Regular fontsize=12 " +
"fillcolor={gray 0} alignment=justify leading=140%";
tf = p.create_textflow(text, optlist);
if (tf == -1)
throw new Exception("Error: " + p.get_errmsg());
/* Place the Textflow */
result = p.fit_textflow(tf, llx, lly, urx, ury-34, "");
if (!result.equals("_stop")) {
/* Check for further action */
}
p.delete_textflow(tf);
p.end_page_ext("");
p.end_document("");
} catch (PDFlibException e) {
System.err.println("PDFlib exception occurred:");
System.err.println("[" + e.get_errnum() + "] " + e.get_apiname()
+ ": " + e.get_errmsg());
exitcode = 1;
} catch (Exception e) {
System.err.println(e);
exitcode = 1;
} finally {
if (p != null) {
p.delete();
}
System.exit(exitcode);
}
}
}