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pdfx/starter_pdfx5n updated

Create PDF/X-5n conforming output with an image and DeviceN color.

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/*
 * PDF/X-5n starter:
 * Create PDF/X-5n conforming output with an image and DeviceN color
 *
 * Required software: PDFlib/PDFlib+PDI/PPS 9.1
 * Required data: font file, image file, 7-colorant ('xCLR') ICC output
 *                intent profile
 */

package com.pdflib.cookbook.pdflib.pdfx;

import com.pdflib.pdflib;
import com.pdflib.PDFlibException;

class starter_pdfx5n {
    public static void main(String argv[]) {
        /* This is where the data files are. Adjust as necessary. */
        final String searchpath = "../input";

        pdflib p = null;
        final String imagefile = "zebra.tif";
        
        // 7-colorant (xCLR) output intent profile.
        final String profilename = "2020_13.003_FOGRA55beta_CL_Profile.icc";
        
        String optlist;

        int font, image, icc, devicen;
        double width, height;
        int exitcode = 0;

        // Transform function for 2-color Lab-based spot color
        final String transform2 =
              "% DeviceN transform function for N=2 in CIE L*a*b* color space\n"
            + "% Lab color values of input colors must be listed here:\n"
            + "64.0497  66.2296  85.5331        % color 1: PANTONE Orange 021 C\n"
            + "21.6373  57.9144 -71.8210        % color 2: PANTONE Violet C\n"
            + "% blend L values\n"
            + "7 index 6 index mul              % t1*L1\n"
            + "7 index 4 index mul              % t2*L2\n"
            + "add\n"
            + "9 1 roll                         % bottom: L\n"
            + "% blend a values\n"
            + "7 index 5 index mul              % t1*a1\n"
            + "7 index 3 index mul              % t2*a2\n"
            + "add\n"
            + "9 1 roll                         % bottom: a\n"
            + "% blend b values\n"
            + "7 index 4 index mul              % t1*b1\n"
            + "7 index 2 index mul              % t2*b2\n"
            + "add\n"
            + "9 1 roll                         % bottom: b\n"
            + "pop pop pop pop pop pop pop pop\n";

        try {
            p = new pdflib();

            /*
             * Set errorpolicy to return, this means we must check return
             * values of load_font() etc.
             * Set the search path for fonts and images etc.
             */
            p.set_option("errorpolicy=return SearchPath={{" + searchpath + "}}");

            if (p.begin_document("starter_pdfx5n.pdf", "pdfx=PDF/X-5n") == -1) {
                throw new Exception("Error: " + p.get_errmsg());
            }

            p.set_info("Creator", "PDFlib starter sample");
            p.set_info("Title", "starter_pdfx5n");

            if (p.load_iccprofile(profilename, "usage=outputintent") == -1) {
                System.err.println("Error: " + p.get_errmsg());
                System.err.println(
                    "An n-colorant ('xCLR') printer profile is required as output intent for PDF/X-5n.");
                p.delete();
                System.exit(2);
            }

            p.begin_page_ext(0, 0, "width=a4.width height=a4.height");

            /* Font embedding is required for PDF/X */
            font = p.load_font("NotoSerif-Regular", "unicode", "embedding");

            if (font == -1) {
                throw new Exception("Error: " + p.get_errmsg());
            }
            
            p.fit_textline(
                "PDF/X-5n starter sample with 7-color output intent", 50,
                800, "fontsize=18 font=" + font);

            /*
             * Create a DeviceN color space with two of the device's process
             * colors. The following types of spot colors can be used for
             * PDF/X-5n:
             * - all built-in Pantone and HKS colors
             * - spot colors described in the n-colorant output intent profile
             * - custom spot colors defined with makespotcolor()
             * 
             * Spot colors listed in the 7-color ICC profile don't have to be
             * defined explicitly (and these are standard PANTONE colors anyway).
             * PDFlib reads the definitions from the ICC profile.
             */
            devicen = p.create_devicen(
                "names={{PANTONE Orange 021 C} {PANTONE Violet C}} alternate=lab transform={{" + transform2
                    + "}} errorpolicy=exception");
            p.set_graphics_option("fillcolor={devicen " + devicen + " 0.9 0.2}");

            /* Fill a circle with the DeviceN color defined above */
            p.circle(400, 600, 100);
            p.fill();

            /* The RGB image needs an ICC profile; we use sRGB. */
            image = p.load_image("auto", imagefile, "iccprofile=sRGB");

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

            /* Place a diagonal stamp across the image area */
            width = p.info_image(image, "width", "");
            height = p.info_image(image, "height", "");

            /* Place the image on the page and close it */
            p.fit_image(image, (double) 0.0, (double) 0.0, "");
            p.close_image(image);

            optlist = "fontsize=48 font=" + font + " boxsize={" + width + " "
                + height + "} stamp=ll2ur";
            p.fit_textline("Zebra", 0, 0, optlist);

            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);
        }
    }
}