resources/images

package com.pdflib.cookbook.pcos.resources;

import com.pdflib.pCOS;

import com.pdflib.pCOSException;

import com.pdflib.cookbook.pcos.pcos_cookbook_example;

/**

 * Print information about all images in the document.

 * <p>

 * Required software: pCOS interface 3 (pCOS 2.x, PDFlib 7.x, TET 2.2,

 * PLOP 3.x)<br>

 * Required data: PDF document

 *

 * @version $Id: images.java,v 1.5 2007/09/19 08:45:31 stm Exp $

 */

public class images extends pcos_cookbook_example {

   

    /* This is where the data files are. Adjust as necessary. */

    private final static String SEARCH_PATH = "../input";

    public void example_code(pCOS p, String filename) throws pCOSException, Exception {

        /* Open the PDF document */

        int doc = p.open_document(filename, "");

        if (doc == -1)

            throw new Exception("Error: " + p.get_errmsg());

       

        System.out.println("File name: " + p.get_string(doc, "filename"));

       

        int imagecount = (int) p.get_number(doc, "length:images");

       

        System.out.println("Image count: " + imagecount);

       

        for (int image = 0; image < imagecount; image += 1) {

            System.out.print("  Image " + (image + 1) + ", ");

           

            String objtype = p.get_string(doc, "type:images[" + image + "]/Filter");

           

            if (objtype.equals("name")) {

                String filter = p.get_string(doc, "images[" + image + "]/Filter");

                System.out.print("Filter=" + filter);

            }

            else if (objtype.equals("array")) {

                String filter = p.get_string(doc, "images[" + image + "]/Filter[0]");

                System.out.print("Filter=" + filter);

                int filtercount = (int) p.get_number(doc,

                    "length:images[" + image + "]/Filter");

                for (int f = 1; f < filtercount; f++) {

                    filter =

                        p.get_string(doc, "images[" + image + "]/Filter[" + f + "]");

                    System.out.print("+" + filter);

                }

            }

           

            System.out.print(", "

                + (int) p.get_number(doc, "images[" + image + "]/Width")

                + "x"

                + (int) p.get_number(doc, "images[" + image + "]/Height")

                + ", ");

           

            check_colorspace(p, doc, image);

           

            System.out.println();

        }

   

        p.close_document(doc);

    }

   

    private static void check_colorspace(pCOS p, int doc, int image)

        throws pCOSException {

        String objtype = p.get_string(doc, "type:images[" + image + "]/ColorSpace");

        if (objtype.equals("name")) {

            System.out.print(p.get_string(doc, "images[" + image + "]/ColorSpace"));

        }

        else if (objtype.equals("array")) {

            String cs = p.get_string(doc, "images[" + image + "]/ColorSpace[0]");

            System.out.print(cs);

            if (cs.equals("Indexed") || cs.equals("Separation")) {

                System.out.print(" "

                    + p.get_string(doc, "images[" + image + "]/ColorSpace[1]"));

            }

        }

        else if (objtype.equals("null")) {

            System.out.print("ImageMask");

        }

        else {

            System.out.print("(complex ColorSpace)");

        }

    }

   

    public images(String[] argv, String readable_name,

        String search_path, String full_rcs_file_name, String revision) {

        super(argv, readable_name, search_path, full_rcs_file_name, revision);

    }

    public static void main(String argv[]) {

        images example = new images(argv,

            "Image XObjects", SEARCH_PATH,

            "$RCSfile: images.java,v $", "$Revision: 1.5 $");

        example.execute();

    }

}