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table/vertical_text_alignment

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/* $Id: vertical_text_alignment.java,v 1.7 2013/01/15 10:12:07 stm Exp $

 * Vertical text alignment:

 * Demonstrate the vertical alignment of text lines and Textflows in a table

 * cell.

 *

 * Create a simple table with some text lines and a Textflow which are

 * vertically centered in the table cell.

 * Then, create the same table but with all cell contents having the same

 * vertical distance from the cell borders regardless of whether they are

 * Textflows or text lines.

 *

 * 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 vertical_text_alignment

{

    public static void main (String argv[])

    {

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

    String searchpath = "../input";

    String outfile = "vertical_text_alignment.pdf";

    String title = "Vertical Text Alignment";


    pdflib p = null;

    int font, tf=-1, tbl=-1;

    String result, optlist;

   

    /* Define the column widths of the first and the second column */

    int c1 = 80, c2 = 120;

   

    /* Define the lower left and upper right corners of the table instance.

     * The table width of 200 matches the sum of the widths of the two table

     * columns 80 + 120.

     */

    double llx=100, lly=500, urx=300, ury=600;

   

    /* Text for filling a table cell with multi-line Textflow */

    String tf_text = "It is amazingly robust and can even do aerobatics. " +

                     "But it is best suited to gliding.";


    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: 1.7 $");


        /* Load the font */

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

        if (font == -1)

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

       

        /* Start the page */

        p.begin_page_ext(0, 0, "width=a4.width height=a4.height");

       

       

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

         * Create a simple table with some text lines and a Textflow

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

         */

       

        /* Define the option list for three text line cells placed in the first

         * column. Define a fixed column width of 80 points. The position of the

         * text line with a font size of 8 is in the center on the left with a

         * margin of 4 points.

         */

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

            " fontsize=8} colwidth=" + c1 + " margin=4";


        /* Add a text line cell in column 1 row 1 */

        tbl = p.add_table_cell(tbl, 1, 1, "Our Paper Planes", optlist);

        if (tbl == -1)

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


        /* Add a text line cell in column 1 row 2 */

        tbl = p.add_table_cell(tbl, 1, 2, "Material", optlist);

        if (tbl == -1)

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


        /* Add a text line cell in column 1 row 3 */

        tbl = p.add_table_cell(tbl, 1, 3, "Benefit", optlist);

        if (tbl == -1)

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


        /* Define the option list for a text line placed in the second column.

         * It is similar to the options defined above except of the column width

         * being increased to 120.

         */

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

            " fontsize=8} colwidth=" + c2 + " margin=4";

       

        /* Add a text line cell in column 2 row 2 */

        tbl = p.add_table_cell(tbl, 2, 2, "Offset print paper 220g/sqm",

            optlist);

        if (tbl == -1)

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


        /* Add a Textflow to be placed in a table cell later */

        optlist = "font=" + font + " fontsize=8 leading=110%";

        tf = p.add_textflow(-1, tf_text, optlist);

        if (tf == -1)

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


        /* Define the option list for the Textflow cell using the handle

         * retrieved above. The column width for the cell is 120 with a margin

         * of 4 points.

         */

        optlist = "textflow=" + tf + " margin=4 colwidth=" + c2;


        /* Add the Textflow table cell in column 2 row 3 */

        tbl = p.add_table_cell(tbl, 2, 3, "", optlist);

        if (tbl == -1)

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


        /* Define the option list for fitting the table.

         *

         * The "stroke" option specifies the table ruling. The

         * "line=frame linewidth=0.8" suboptions define an outside ruling with a

         * line width of 0.8 and the "line=other linewidth=0.3" suboptions

         * define a cell ruling with a line width of 0.3.

         */

        optlist = "stroke={{line=frame linewidth=0.8} " +

            "{line=other linewidth=0.3}}";


        /* Place the table instance */

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

            }

        }


        /* Delete the table handle. This will also delete any Textflow handles

         * used in the table

         */

        p.delete_table(tbl, "");

       

       

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

         * Create the same table but in this case we want all cell contents to

         * have the same vertical distance from the cell borders regardless of

         * whether they are Textflows or text lines.

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

         */

       

        tbl = -1;

        tf = -1;

       

        /* Prepare the option list for the text line cells placed in the first

         * column.

         * 

         * Define a fixed row height of 14 points, and the position of the text

         * line to be on the top left with a margin of 4 points.

         * The "fontsize=8" option which has been supplied above doesn't exactly

         * represent the letter height but adds some space below and above.

         * However, the height of an uppercase letter is exactly represented by

         * the capheight value of the font. For this reason use

         * "fontsize={capheight=6}" which will approximately result in a font

         * size of 8 points and (along with "margin=4"), will sum up to an

         * overall height of 14 points corresponding to the "rowheight" option.

        */

        optlist = "fittextline={position={left top} font=" + font +

            " fontsize={capheight=6}} rowheight=14 colwidth=" + c1 +

            " margin=4";

       

        /* Add the text line cells */

        tbl = p.add_table_cell(tbl, 1, 1, "Our Paper Planes", optlist);

        if (tbl == -1)

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


        tbl = p.add_table_cell(tbl, 1, 2, "Material", optlist);

        if (tbl == -1)

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


        tbl = p.add_table_cell(tbl, 1, 3, "Benefit", optlist);

        if (tbl == -1)

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

       

        /* Define the option list for the text line placed in the second

         * column. It is similar to the options defined above except of the

         * column width increased to 120.

         */

        optlist = "fittextline={position={left top} font=" + font +

            " fontsize={capheight=6}} rowheight=14 colwidth=" + c2 +

            " margin=4";


        tbl = p.add_table_cell(tbl, 2, 2, "Offset print paper 220g/sqm",

            optlist);

        if (tbl == -1)

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


        /* Prepare the option list for adding the Textflow.

         * Use "fontsize={capheight=6}" which will approximately result in a

         * font size of 8 points and (along with "margin=4"), will sum up to an

         * overall height of 14 points as for the text lines above.

         */

        optlist = "font=" + font + " fontsize={capheight=6} leading=110%";

       

        /* Add the Textflow to be placed in a table cell later */

        tf = p.add_textflow(-1, tf_text, optlist);

        if (tf == -1)

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

       

        /* Prepare the option list for the Textflow cell

         *

         * The first line of the Textflow should be aligned with the baseline of

         * the "Benefit" text line. At the same time, the "Benefit" text should

         * have the same distance from the top cell border as the "Material"

         * text. To avoid any space from the top add the Textflow cell using

         * "fittextflow={firstlinedist=capheight}". Then add a margin of 4

         * points, the same as for the text lines.

         */

        optlist = "textflow=" + tf + " fittextflow={firstlinedist=capheight} " +

            "colwidth=" + c2 + " margin=4";

       

        tbl = p.add_table_cell(tbl, 2, 3, "", optlist);

        if (tbl == -1)

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


        /* Define the option list for fitting the table. The "stroke" option

         * specifies the table ruling. The "line=frame linewidth=0.8" suboptions

         * define an outside ruling with a line width of 0.8 and the

         * "line=other linewidth=0.3" suboptions define a cell ruling with a

         * line width of 0.3.

         */

        optlist = "stroke={{line=frame linewidth=0.8} " +

            "{line=other linewidth=0.3}}";

       

        /* Place the table instance */

        result = p.fit_table(tbl, llx, lly-150, urx, ury-150, optlist);


        if (result.equals("_error"))

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

        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();

            }

        }

    }

}