/*
 * 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, n-colorant ('xCLR') ICC output
 *                intent profile
 *                
 * This program uses an n-colorant ICC output intent profile. As there are no
 * freely distributable n-colorant ICC profiles available for download, this
 * example program is disabled by default. To use this program put an
 * n-colorant ICC profile into the "extra_input" directory and assign its
 * name to the "profilename" variable below.
 * 
 * This example is not run by default from the Ant build.xml file and can be
 * executed either specifically by invoking "ant starter_pdfx5n" or together
 * with the other topics that require extra configuration by invoking "ant
 * run-extra-topics".
 */

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 searchpath1 = "../input";
        final String searchpath2 = "../extra_input";

        pdflib p = null;
        final String imagefile = "zebra.tif";
        
        /*
         * N-colorant (xCLR) output intent profile. Replace name with
         * available n-colorant ICC profile name that is stored in the
         * "extra_input" directory.
         */
        final String profilename = "7C Indigo_TAC370_ColorLogic.icc";
        
        String optlist;

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

        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"
            + "71.6640  53.2335  99.3307        % color 1: Orange\n"
            + "30.3471  56.1673 -76.4086        % color 2: Violet\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={{" + searchpath1
                + "} {" + searchpath2 + "}}");

            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 n-colorant output intent", 50,
                800, "fontsize=18 font=" + font);

            /*
             * Define the alternate colors for spot colors Orange and Violet for
             * future use in a DeviceN color space. If these colors are
             * described as colorants in the xCLR output intent profile PDFlib
             * fetches the definitions automatically and it is not required to
             * define them in the code.
             */
            p.set_graphics_option("fillcolor={spotname {Orange} 1 "
                + "{ lab 71.6640 53.2335 99.3307 }}");
            p.set_graphics_option("fillcolor={spotname {Violet} 1 "
                + "{ lab 30.3471  56.1673 -76.4086 }}");

            /*
             * Create a DeviceN color space with two of the device's spot
             * 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()
             */
            devicen = p.create_devicen(
                "names={Orange Violet} 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. */
            icc = p.load_iccprofile("sRGB", "");
            
            if (icc == -1){
                System.err.println("Error: " + p.get_errmsg() );
                System.err.println("See www.pdflib.com for ICC profiles.");
                p.delete();
                System.exit(2);
            }
            optlist = "iccprofile=" + icc;
            image = p.load_image("auto", imagefile, optlist);

            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);
        }
    }
}