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table/colorize_cells

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/* $Id: colorize_cells.java,v 1.5 2013/01/15 10:12:07 stm Exp $

 * Colorize cells:

 * Provide some table cells with a colored background.

 *

 * Create a table and use matchboxes to provide some table cells with a

 * colored background.

 *

 * 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 colorize_cells

{

    public static void main (String argv[])

    {

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

    String searchpath = "../input";

    String outfile = "colorize_cells.pdf";

    String title = "Colorize cells";


    pdflib p = null;

    int nrows = 4, row, font, tbl=-1;

    String optlist, result;

   

    final int margin = 3;

    final int fontsize = 12;

   

    /* Height of a table row which is the sum of a font size of 12 and the upper

     * and lower cell margin of 3 each

     */

    int rowheight = 18;

   

    /* Width of the first and second column of the table */

    final int c1 = 120, c2 = 120;

   

    /* Coordinates of the lower left corner of the table fitbox */

    final double llx = 30, lly = 400;

   

    /* Color names */

    final String names[] = { "Chocolate", "CornflowerBlue", "Gold" };

   

    /* RGB color values used in PDFlib in the range 0...1. They are calculated

     * by dividing the RGB value by 255. For example, a PDFlib value of

     * (0.82 0.4 0.1) corresponds to an RGB value of (210 105 30) since

     * 0.82 = 210/255, 0.4 = 105/255, and 0.1 = 30/255.

     */

    final String pdflib[]{ "0.82 0.4 0.1", "0.4 0.58 0.93", "1 0.84 0" };

   

    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: 1.5 $");


        /* Load the font */

        font = p.load_font("Helvetica", "unicode", "");

        if (font == -1)

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


        p.begin_page_ext(0, 0, "width=a5.width height=a5.height");

       

       

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

         * Add a heading line spanning two columns

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

         */

       

        /* Set the current row */

        row = 1;

       

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

            " position=center} rowheight=" + rowheight + " margin=" + margin +

            " colspan=2 " + "colwidth=" + c1;


        tbl = p.add_table_cell(tbl, 1, row, "Color Table", optlist);

        if (tbl == -1)

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

       

       

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

         * Adding two cells in the second, third, and fifth table row each

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

         */

       

        for (row = 2; row <= 4; row++)

        {

            /* Adding a cell in the first column of the current row.

             * The text line is centered horizontally, with a margin

             * from all borders.

             */

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

                " position={left center}} rowheight=" + rowheight +

                " margin=" + margin + " colwidth=" + c1;


            tbl = p.add_table_cell(tbl, 1, row, names[row-2], optlist);

            if (tbl == -1)

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

 

       

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

             * Adding a cell in the second column

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

             *

             * The cell is placed in the second column of the current row.

             * Since the cell doesn't cover a complete row but only one column

             * it cannot be filled with color using one of the row-based shading

             * options. We apply the Matchbox feature instead to fill the

             * rectangle covered by the cell with a gray background color.

             */

            optlist = "colwidth=" + c2 + " margin=" + margin +

                " matchbox={fillcolor={rgb " + pdflib[row-2] + "}}";

       

            tbl = p.add_table_cell(tbl, 2, row, "", optlist);

            if (tbl == -1)

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

        } /* for */

       

       

        /* -------------

         * Fit the table

         * -------------

         *

         * Using "header=1" the table header will include the first line.

         * Using "line=horother linewidth=0.3" the ruling is specified with a

         * line width of 0.3 for all horizontal lines.

         */

        optlist = "header=1 stroke={ {line=horother linewidth=0.3}}";

       

        result = p.fit_table(tbl, llx, lly, llx + c1 + c2,

            lly + nrows * rowheight, optlist);

       

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

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

                if (result.equals( "_error"))

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

                else {

                        /* Other return values require dedicated code to deal with */

                }

        }

        p.end_page_ext("");

       

        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.getMessage());

        } finally {

            if (p != null) {

                p.delete();

            }

        }

    }

}