text_output/fill_polygons_with_text
Define arbitrary polygons to be filled with text. Use fit_textflow() with the "wrap" option and the "addfitbox" and "polygons" suboptions to define a rhombus to be filled with text. Then define a hexagon and a rectangle positioned within the hexagon. In this case the overlapping area will be left blank when fitting the text using the options above.
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* Fill polygons with text:
* Define arbitrary polygons to be filled with text
*
* Use fit_textflow() with the "wrap" option and the "addfitbox" and "polygons"
* suboptions to define a rhombus to be filled with text. Then define a hexagon
* and a rectangle positioned within the hexagon. In this case the overlapping
* area will be left blank when fitting the text using the options above.
*
* 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 fill_polygons_with_text
{
public static void main (String argv[])
{
pdflib p = null;
String searchpath = "../input";
String outfile = "fill_polygons_with_text.pdf";
String title = "Fill Polygons with Text";
int i, font, tf = -1;
String result;
final double llx = 50, lly = 200, urx = 450, ury = 700;
final String textopts =
"fontname=Helvetica fontsize=10.5 encoding=unicode " +
"fillcolor={gray 0} alignment=justify charref";
/* Text which is placed on the page. Soft hyphens are marked with the
* character reference "­" (character references are enabled by the
* charref option).
*/
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. ";
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");
p.set_parameter("charref", "true");
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 $");
/* Load the font */
font = p.load_font("Helvetica-Bold", "unicode", "");
if (font == -1)
throw new Exception("Error: " + p.get_errmsg());
/* ------------------------
* Fill a rhombus with text
* ------------------------
*/
p.begin_page_ext(0, 0, "width=a4.width height=a4.height");
/* Create a heading */
p.setfont(font, 11);
p.fit_textline("Page 1:", llx, ury+60, "fillcolor={rgb 0 0 1}");
p.fit_textline("fit_textflow() with option", llx, ury+40,
"fillcolor={rgb 0 0 1}");
p.fit_textline("wrap={addfitbox polygons={{50% 80% 20% 50% " +
"50% 20% 80% 50% 50% 80%}}}", llx, ury+20,
"fillcolor={rgb 0 0 1}");
/* Create some text and feed it to a Textflow object */
tf = p.add_textflow(tf, text, textopts);
if (tf == -1)
throw new Exception("Error: " + p.get_errmsg());
/* Place the text. Use the "wrap" option with the "addfitbox" and
* "polygons" suboptions to add a rhombus to the area being filled.
* In this case, each corner of the rhombus is specified by a pair
* of coordinates defined as percentage of the fitbox width or
* height, respectively.
* "showborder" is used to illustrate the fitbox borders.
*/
result = p.fit_textflow(tf, llx, lly, urx, ury,
"verticalalign=justify linespreadlimit=120% showborder " +
"wrap={ addfitbox polygons={" +
"{50% 80% 20% 50% 50% 20% 80% 50% 50% 80%} } }");
/* Check for errors */
if (!result.equals("_stop"))
{
/* "_boxempty" happens if the box is very small and doesn't
* hold any text at all.
*/
if (result.equals( "_boxempty"))
throw new Exception ("Error: Textflow box too small");
else
{
/* Any other return value is a user exit caused by
* the "return" option; this requires dedicated code to
* deal with.
*/
throw new Exception ("User return '" + result +
"' found in Textflow");
}
}
p.delete_textflow(tf);
p.end_page_ext("");
/* ------------------------------------------------------------------
* Fill two overlapping shapes with text.
* In this case, the first shape will be filled while the area of the
* second shape overlapping with the first shape will be left blank.
* ------------------------------------------------------------------
*/
tf = -1;
p.begin_page_ext(0, 0, "width=a4.width height=a4.height");
/* Create a heading */
p.setfont(font, 11);
p.fit_textline("Page 2:", llx, ury+80, "fillcolor={rgb 0 0 1}");
p.fit_textline("fit_textflow() with option wrap={addfitbox polygons={",
llx, ury+60, "fillcolor={rgb 0 0 1}");
p.fit_textline("{20% 10% 80% 10% 100% 50% 80% 90% 20% 90% " +
"0% 50% 20% 10%}", llx, ury+40, "fillcolor={rgb 0 0 1}");
p.fit_textline("{35% 35% 65% 35% 65% 65% 35% 65% 35% 35%}}}",
llx, ury+20, "fillcolor={rgb 0 0 1}");
/* Create some text and feed it to a Textflow object */
for (i = 0; i < 3; i++) {
tf = p.add_textflow(tf, text, textopts);
if (tf == -1)
throw new Exception("Error: " + p.get_errmsg());
}
/* Place the text. Use the "wrap" option with the "addfitbox" and
* "polygons" suboptions to add a hexagon to the area being filled and
* a rectangle to the area being left empty. Each corner is specified by
* a pair of coordinates defined as percentage of the fitbox width or
* height, respectively.
* "showborder" is used to illustrate the fitbox borders.
*/
result = p.fit_textflow(tf, llx, lly, urx, ury,
"verticalalign=justify linespreadlimit=120% showborder " +
"wrap={ addfitbox polygons={" +
"{20% 10% 80% 10% 100% 50% 80% 90% 20% 90% 0% 50% 20% 10%} " +
"{35% 35% 65% 35% 65% 65% 35% 65% 35% 35%} } }");
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();
}
}
}
}