PDFlib サンプル集(クックブック)
PDFlib で、インポートされた PDF カードにイメージを配置するサンプルプログラムです。
インポートされた PDF のページの中央に 80% のサイズでイメージを配置します。イメージの高さは、イメージの縦横比を保ったままのサイズに調整されます。
必要な製品:PDFlib または PDFlib+PDI または PPS
/*
* Center image on card:
* Place an image on an imported PDF card
*
* The image will be placed in the center on the imported PDF page and scaled
* to 80% of the page size. The height of the image will be scaled accordingly
* so that the picture will stay in ratio.
*
* Required software: PDFlib+PDI/PPS 9
* Required data: PDF document, image file
*/
package com.pdflib.cookbook.pdflib.images;
import com.pdflib.pdflib;
import com.pdflib.PDFlibException;
public class center_image_on_card
{
public static void main (String argv[])
{
/* This is where the data files are. Adjust as necessary. */
String searchpath = "../input";
String outfile = "center_image_on_card.pdf";
String title = "Center Image on Card";
pdflib p = null;
String imagefile = "nesrin.jpg";
String cardfile = "card.pdf";
int image, card, cardpage;
double cardwidth, cardheight;
int exitcode = 0;
try {
p = new pdflib();
p.set_option("searchpath={" + searchpath + "}");
/* This means we must check return values of load_font() 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);
/* Load the image */
image = p.load_image("auto", imagefile, "");
if (image == -1)
throw new Exception("Error: " + p.get_errmsg());
/* Load the card file */
card = p.open_pdi_document(cardfile, "");
if (card == -1)
throw new Exception("Error: " + p.get_errmsg());
/* Load the first page of the card file */
cardpage = p.open_pdi_page(card, 1, "");
if (cardpage == -1)
throw new Exception("Error: " + p.get_errmsg());
/* Query the width and height of the first page of the card */
cardwidth = p.pcos_get_number(card, "pages[0]/width");
cardheight = p.pcos_get_number(card, "pages[0]/height");
/* Create a page with the width and height of the card */
p.begin_page_ext(0, 0, "width=" + cardwidth + " height=" + cardheight);
/* Place the card page */
p.fit_pdi_page(cardpage, 0, 0, "");
/* Place the image in the center of a box which covers 80% of the card
* size and starts from 10 percent of the card width and height. Fit
* the image proportionally into the box so that it will cover 80% of
* the card size as well.
*/
p.fit_image(image, cardwidth * 0.1, cardheight * 0.1,
"boxsize={" + cardwidth * 0.8 + " " + cardheight * 0.8 +
"} position=center fitmethod=meet");
p.end_page_ext("");
p.close_image(image);
p.close_pdi_page(cardpage);
p.close_pdi_document(card);
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);
}
}
}
(Apr 3, 2007 - Oct 21, 2022)