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table/spread_oversized_table

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/* $Id: spread_oversized_table.java,v 1.4 2013/01/15 10:12:07 stm Exp $

 * Spread oversized table:

 * Output a table on 2 x m pages as it is needed to fit it completely.

 *

 * A table has a width which exceeds the width of the page. Therefore, output

 * the table on a pair of pages with one page acting as the left and one page

 * acting as the right page. Add pairs of pages until the table has been placed

 * completely.

 * Output each table instance twice with an appropriate clipping rectangle

 * applied to the "left" or the "right" part, respectively. Use the "rewind"

 * option of fit_table() to rewind the table to the state before the fit_table()

 * call used to place the first table instance. Otherwise the table instance

 * could not be placed a second time.

 *

 * In Acrobat, display the table as follows:

 * Disable "View, Page Display, Show Cover Page during Two-Up" if enabled.

 * Choose "View, Page Display, Two-Up" to display two pages next to each other. 

 *

 * Required software: PDFlib/PDFlib+PDI/PPS 9

 * Required data: none

 */

package com.pdflib.cookbook.pdflib.table;


import com.pdflib.pdflib;

import com.pdflib.PDFlibException;


public class spread_oversized_table

{

    public static void main (String argv[])

    {

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

    String searchpath = "../input";

    String outfile = "spread_oversized_table.pdf";

    String title = "Spread oversized Table";


    pdflib p = null;

   

    int font, tbl = -1;

   

    int row, col;

    final int pagewidth=421, pageheight=595;

   

    /* Number of rows and columns contained in the table */

    final int rowmax=50, colmax=10;


    /* Inside, outside, upper and lower page margins */

    final double inside=10, outside=50, top=20, bottom=20;

   

    /* Table width and height */

    final double tablewidth=2*(pagewidth-outside-inside);

    final double tableheight=pageheight-bottom-top;

   

    final double lly=bottom, ury=pageheight-top;

   

    double llx, urx, widthright, widthleft;   

    double xmax = pagewidth-inside, xright = outside, x;

    double xshift;

   

    String headertext = "Table header (centered across all columns)";

    String result, optlist;

    int i;


    try {

        p = new pdflib();


        p.set_option("searchpath={" + searchpath + "}");


        /* This means we must check return values of load_font() etc. */

        p.set_option("errorpolicy=return");


        if (p.begin_document(outfile, "") == -1)

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


        p.set_info("Creator", "PDFlib Cookbook");

        p.set_info("Title", title + " $Revision: 1.4 $");

       


        /* -------------------

         * Add the table cells

         * -------------------

         */


        /* In row 1 add the table header which spans all columns

         */

        row = 1; col = 1;

        font = p.load_font("Times-Bold", "unicode", "");


        if (font == -1)

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


        optlist = "fittextline={position=center font=" + font +

            " fontsize=14} " + "margin=2 colspan=" + colmax;


        tbl = p.add_table_cell(tbl, col, row, headertext, optlist);

        if (tbl == -1)

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



        /* In row 2 and above add the respective column and row numbers */

        for (row++; row <= rowmax; row++) {

            for (col = 1; col <= colmax; col++)

            {

                String num;


                num = "Col " + col + "/Row " + row;

                optlist = "fittextline={font=" + font + " fontsize=10} " +

                    "margin=2";

               

                tbl = p.add_table_cell(tbl, col, row, num, optlist);

                if (tbl == -1)

                throw new Exception("Error adding cell: " +

                    p.get_errmsg());

            }

        }

       

        /* Option list for fitting the table:

         * define the first line as the header line;

         * shade every other row; draw lines for all table cells

         */

        optlist = "header=1 fill={{area=rowodd fillcolor={gray 0.9}}} " +

            "stroke={{line=other}} ";

       

               

        /* --------------------------------------------------------------------

         * Check if the table width fits completely on the page or if the table

         * width has to distributed over two pages, i.e. the left and the right

         * page

         * --------------------------------------------------------------------

         */


        /* Place the first table instance over both pages in blind mode. All

         * calculations will be done but the table will not actually be placed.

         * Then, retrieve the number of the last column (i.e. the vertical line)

         * which still fits on the "left" page.

         */

        p.begin_page_ext(pagewidth, pageheight, "");

       

        llx = outside;

        urx = llx+tablewidth;

        result = p.fit_table(tbl, llx, lly, urx, ury, optlist + "blind");


        if (result.equals("_error") || result.equals("_boxempty"))

            throw new Exception ("Couldn't place table: " + p.get_errmsg());

       

        /* Query the x coordinate "xright" of the last column which fits in the

         * fitbox on the "left" page

         */

        for (i = 1; i <= colmax; i++)

        {

            /* Get the x coordinate of the vertical line with number #.

             * "xvertline0" is the left table border.

             */

            x = p.info_table(tbl, "xvertline" + i)

            if (x > xmax) {

                break;

            }

            xright = x;

        }

 

        /* -------------------------------------------------------------

         * Place the first half of the table instance on the "left" page

         * -------------------------------------------------------------

         */

       

        /* Since the table will be clipped on the right the inner margin of the

         * left page may be increased. Use the "xshift" value to shift the table

         * to the right so that the inner margin will become the default value

         * again.

        */

        xshift = pagewidth - xright - inside;

       

        /* Using the x coordinate of the last column fitting on the "left" page

         * set the clipping rectangle for the first columns of the table which

         * will be placed on the left page.

         */

        llx = outside + xshift;

        widthleft = xright - outside;

        p.rect(llx, lly, widthleft, tableheight);

        p.clip();

       

        /* Place the table instance on the "left" page.

         * Use the "rewind" option to rewind the table to the state before

         * the last fit_table() call (which just happened in "blind" mode for

         * calculation purposes).

         * The table instance will be placed with the complete table width but

         * it will be clipped according to the clipping rectangle to show only

         * the first "xright" columns.

         */

        llx = outside + xshift;

        urx = llx + tablewidth;

        result = p.fit_table(tbl, llx, lly, urx, ury, optlist + " rewind=-1");


        if (result.equals("_error"))

            throw new Exception ("Couldn't place table : " + p.get_errmsg());

       

        p.end_page_ext("");

       

        /* ---------------------------------------------------------------

         * Place the second half of the table instance on the "right" page

         * ---------------------------------------------------------------

         */

         

        p.begin_page_ext(pagewidth, pageheight, "");

       

        /* Set the clipping rectangle for all further columns of the table which

         * will be placed on the "right" page

         */

        llx = inside;

        widthright = tablewidth-widthleft;

        p.rect(llx, lly, widthright, tableheight);

        p.clip();

       

        /* Place the table instance again on the "right" page.

         * Use the "rewind" option to rewind the table to the state before

         * the last fit_table() call (which has been used to place the first

         * table instance). Otherwise this instance could not be placed a second

         * time.

         * The fitbox of the table instance is shifted to the left "outside"

         * the page so that the last columns can be shown on the page.

         * The table instance will be placed with the complete table width but

         * it will be clipped according to the clipping rectangle to show only

         * the last columns.

         */

        llx = llx-widthleft;

        urx = inside+widthright;

        result = p.fit_table(tbl, llx, lly, urx, ury, optlist + " rewind=-1");


        if (result.equals("_error"))

            throw new Exception ("Couldn't place table : " + p.get_errmsg());


        p.end_page_ext("");

       

       

        /* ---------------------------------------------------------------

         * Place all further table instances on a left and right page each

         * ---------------------------------------------------------------

         */

       

        /* Loop until all of the table is placed; create new pages as long as

         * more table instances need to be placed.

         */

        while (result.equals("_boxfull"))

        {

            p.begin_page_ext(pagewidth, pageheight, "");

           

            /* Set the clipping rectangle to place the first columns of the

             * table on the left page

             */

            llx = outside + xshift;

            widthleft = xright-outside;

            p.rect(llx, lly, widthleft, tableheight);

            p.clip();

           

            /* Place the table instance on the "left" page */

            urx = llx+tablewidth;

            result = p.fit_table(tbl, llx, lly, urx, ury, optlist);


            if (result.equals("_error"))

                throw new Exception ("Couldn't place table : " + p.get_errmsg());

           

            p.end_page_ext("");

           

            p.begin_page_ext(pagewidth, pageheight, "");

           

            /* Set the clipping rectangle to place all further columns of the

             * table on the right page

             */

            llx = inside;

            widthright = tablewidth-widthleft;

            p.rect(llx, lly, widthright, tableheight);

            p.clip();

           

            /* Place the table instance again on the "right" page */

            llx = llx-widthleft;

            urx = inside+widthright;

            result = p.fit_table(tbl, llx, lly, urx, ury,

                optlist + " rewind=-1");


            if (result.equals("_error"))

                throw new Exception ("Couldn't place table : " + p.get_errmsg());

           

            p.end_page_ext("");

        }

       

        /* Check the result; "_stop" means all is ok */

        if (!result.equals("_stop")) {

            if (result.equals( "_error"))

                throw new Exception ("Error when placing table: " +

                    p.get_errmsg());

            else

                /* Any other return value is a user exit caused by the "return"

                 * option; this requires dedicated code to deal with.

                 */

                throw new Exception ("User return found in Textflow");

        }


        /* This will also delete Textflow handles used in the table */

        p.delete_table(tbl, "");

       

        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.toString());

        } finally {

            if (p != null) {

                p.delete();

            }

        }

    }

}