text_output/drop_caps
Create an initial drop cap at the beginning of some text. Set the initial character of a Textflow in larger type and drop it down a bit into the text. Place the initial character which covers several lines of text at a certain text position within a Textflow. The "matchbox" and "matchbox end" inline options indicate the rectangle of the character's fitbox. The "textrise" option with an appropriate negative value will drop the character some lines down. The "createwrapbox" option indicates that the matchbox will be inserted as wrap box for further text to wrap around.
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* Drop caps:
* Create an initial drop cap at the beginning of some text
*
* Set the initial character of a Textflow in larger type and drop it down
* a bit into the text.
* Place the initial character which covers several lines of text at a certain
* text position within a Textflow. The "matchbox" and "matchbox end" inline
* options indicate the rectangle of the character's fitbox. The "textrise"
* option with an appropriate negative value will drop the character some lines
* down. The "createwrapbox" option indicates that the matchbox will be inserted
* as wrap box for further text to wrap around.
*
* 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 drop_caps
{
public static void main (String argv[])
{
pdflib p = null;
String searchpath = "../input";
String outfile = "drop_caps.pdf";
String title = "Drop Caps";
int tf = -1;
String result, text, optlist = "";
final double llx = 100, lly = 50, urx = 450, ury = 800;
final int t_fontsize = 16; // font size of the text
final int t_leading = 20; // leading of the text
final int c_num = 3; // no. of lines for the drop cap to cover
int c_textrise = -((c_num - 1) * t_leading); // text rise of the drop cap
double c_fontsize = -(c_textrise * 1.8); // font size of the drop cap
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");
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: 1.2 $");
/* Option list for the output of the initial drop character defining
* the two macros "cap_start" and "cap_end" for starting and ending the
* drop cap.
* The "matchbox" and "matchbox end" inline options indicate the
* rectangle of the character's fitbox. The "textrise" option with an
* appropriate negative value will drop the character some lines down.
* The "createwrapbox" option indicates that the matchbox will be
* inserted as wrap box for further text to wrap around.
*/
optlist = "fontname=Helvetica encoding=unicode alignment=justify " +
"charref " +
"macro " +
"{cap_start {fontsize=" + c_fontsize + " leading=" + t_leading +
" textrise=" + c_textrise +
" matchbox={createwrapbox boxheight={leading textrise}}} " +
"cap_end {matchbox=end fontsize=" + t_fontsize + " textrise=0}}";
/* Text to be placed on the page. Soft hyphens are marked with the
* character reference "­" (character references are enabled by the
* "charref" option).
*/
text =
"<&cap_start>O<&cap_end>ur 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. ";
/* Create the Textflow using the optlist defined above */
tf = p.create_textflow(text, optlist);
if (tf == -1)
throw new Exception("Error: " + p.get_errmsg());
do
{
p.begin_page_ext(0, 0, "width=a4.width height=a4.height");
/* Fit the Textflow. It will wrap around the matchbox defined for the
* initial drop cap.
*/
result = p.fit_textflow(tf, llx, lly, urx, ury, "");
p.end_page_ext("");
/* "_boxfull" means we must continue because there is more text;
* "_nextpage" is interpreted as "start new column"
*/
} while (result.equals("_boxfull") || result.equals("_nextpage"));
/* 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_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();
}
}
}
}