package com.pdflib.cookbook.pcos.pages;

import com.pdflib.pCOS;
import com.pdflib.pCOSException;
import com.pdflib.cookbook.pcos.pcos_cookbook_example;

/** 
 * Create a list of all blocks contained on the pages of a PDF document and
 * show their name, type and dimensions.
 * <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: blocks.java,v 1.3 2007/09/19 08:45:30 stm Exp $
 */
public class blocks 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 pagecount = (int) p.get_number(doc, "length:pages");

        for (int page = 0; page < pagecount; page++) {
            String objtype = p.get_string(doc,
                "type:pages[" + page + "]/PieceInfo/PDFlib/Private/Blocks");
            if (objtype.equals("null"))
                continue;

            int blockcount = (int) p.get_number(doc,
                "length:pages[" + page + "]/PieceInfo/PDFlib/Private/Blocks");
            if (blockcount == 0)
                continue;
            else
                System.out.println("Blocks on page " + (page + 1) + ":");

            for (int b = 0; b < blockcount; b++) {
                String val = p.get_string(doc,
                    "pages[" + page + "]"
                    + "/PieceInfo/PDFlib/Private/Blocks"
                    + "[" + b + "]/Subtype");

                System.out.print(val + " Block ");

                val = p.get_string(doc,
                    "pages[" + page + "]"
                    + "/PieceInfo/PDFlib/Private/Blocks" + "[" + b + "]/Name");
                System.out.println("'" + val + "':");

                for (int j = 0; j < 4; j++) {
                    System.out.print(
                        p.get_number(doc,
                            "pages[" + page + "]"
                            + "/PieceInfo/PDFlib/Private/Blocks"
                            + "[" + b + "]/Rect[" + j + "]")
                        + " ");
                }
                System.out.println();
            }
        }
        
        p.close_document(doc);
    }
        
    public blocks(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[]) {
        blocks example = new blocks(argv, "PDFlib Blocks",
            SEARCH_PATH, "$RCSfile: blocks.java,v $", "$Revision: 1.3 $");
        example.execute();
    }
}