PDFlib

高度なPDFアプリケーションの開発を支援する定番プログラムライブラリー Supported by インフォテック株式会社

PDFlib サンプル集(クックブック)

本サンプルプログラムは、PDF 文書生成ライブラリーの実装である PDFlib の基本的な機能を実際のプログラムで紹介したものです。

本サイトでダウンロードした PDFlib は、一部機能の制限を除き、評価版として無償でお使いいただけます。

ウェブフォーム

PDFlib で、暗号化され、いくつかのフォームフィールドを持つ線形化された PDF を作成するサンプルプログラムです。現在の日付を日付フィールドに自動的に挿入するための「page open」アクションによって挿入される JavaScript の行があります。


/* $Id: starter_webform.java,v 1.7 2013/03/08 15:51:49 stm Exp $
 *
 * Webform starter:
 * Create a linearized PDF (for fast delivery over the Web, also known
 * as "fast Web view") which is encrypted and contains some form fields.
 * A few lines of JavaScript are inserted as "page open" action to
 * automatically populate the date field with the current date.
 *
 * Required software: PDFlib/PDFlib+PDI/PPS 9
 * Required data: font file
 */
import com.pdflib.pdflib;
import com.pdflib.PDFlibException;

public class starter_webform {
    public static void main(String argv[]) {
        pdflib p = null;
	/* This is where the data files are. Adjust as necessary. */
        String searchpath = "../input";
        String optlist;
        int font, fieldfont, action;
        double llx = 150, lly = 550, urx = 350, ury = 575;

        /* JavaScript for automatically filling the date into a form field */
        String js = "var d = util.printd(\"mm/dd/yyyy\", new Date());"
                + "var date = this.getField(\"date\");" + "date.value = d;";

        try {
            p = new pdflib();

            /* This means we must check return values of load_font() etc. */
            p.set_option("errorpolicy return searchpath={" + searchpath + "}");

            /* Prevent changes with a master password */
            optlist = "linearize masterpassword=pdflib permissions={nomodify}";

            if (p.begin_document("starter_webform.pdf", optlist) == -1)
                throw new Exception("Error: " + p.get_errmsg());

            p.set_info("Creator", "PDFlib starter sample");
            p.set_info("Title", "starter_webform");

            optlist = "script[" + js.length() + "]={" + js + "}";
            action = p.create_action("JavaScript", optlist);

            optlist = "action={open=" + action + "}";
            p.begin_page_ext(595, 842, optlist);

            font = p.load_font("GenR102", "unicode", "");

            if (font == -1)
                throw new Exception("Error: " + p.get_errmsg());

	    /* Load the font again for use in the form fields; this is required
	     * to work around problems in Acrobat's form field handling.
	     * Although we specify "pdfdoc" encoding other Unicode characters
	     * can be used in the field.
	     */
	    fieldfont = p.load_font("GenR102", "pdfdoc",
	                                "embedding nosubsetting");

            if (fieldfont == -1)
                throw new Exception("Error: " + p.get_errmsg());

            p.setfont(font, 24);

            p.fit_textline("Date: ", 125, lly + 5, "position={right bottom}");

            /* The tooltip will be used as rollover text for the field */
            optlist = "tooltip={Date (will be filled automatically)} "
                    + "bordercolor={gray 0} font=" + fieldfont;
            p.create_field(llx, lly, urx, ury, "date", "textfield", optlist);

            lly -= 100;
            ury -= 100;
            p.fit_textline("Name: ", 125, lly + 5, "position={right bottom}");

            optlist = "tooltip={Enter your name here} "
                    + "bordercolor={gray 0} font=" + fieldfont;
            p.create_field(llx, lly, urx, ury, "name", "textfield", optlist);

            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();
            }
        }
    }
}
(Apr 3, 2007 - Feb 20, 2014)