PDFlib Cookbook

cookbook

table/table_contact_sheet

Create a contact sheet with photos and their labels.

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/*
 * Table contact sheet:
 * Create a contact sheet with photos and their labels
 * 
 * Create a table and place a number of photos in it. For each photo, an image
 * is placed in one cell, and a text label is placed in the cell below. 
 *  
 * 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 table_contact_sheet
{
    public static void main (String argv[])
    {
        /* This is where the data files are. Adjust as necessary. */
        String searchpath = "../input";
        String outfile = "table_contact_sheet.pdf";
        String title = "Table Contact Sheet";
        
        pdflib p = null;

        int exitcode = 0;
        int i, j, row, col, tbl=-1, image=-1, regularfont, boldfont;
        final double fontsize = 12;
        String result;
        final double pagewidth = 842, pageheight = 595;
      
        /* table coordinates */
        final int llx = 50, urx = (int) pagewidth - llx;
        final int lly = 80, ury = (int) pageheight - lly;
        
        final int yheading = ury + 2 * 15;
       
        /* fixed number of table columns, variable number of rows */
        final int nocols = 5;

        /* column width for all columns */
        final int cw = 100;
        
        /* row height for image rows and text rows */
        final double img_rowheight = 100;
        final double txt_rowheight = 30;
        
        /* margins for image and text cells */
        final int img_margin = 6, txt_margin = 6;
          
        final String imagefiles [] = {
            "cambodia_angkor_thom.jpg",
            "cambodia_angkorwat1.jpg",
            "cambodia_angkorwat2.jpg",
            "cambodia_banteay_samre.jpg",
            "cambodia_bayon1.jpg",
            "cambodia_bayon2.jpg",
            "cambodia_bayon3.jpg",
            "cambodia_neak_pean.jpg",
            "cambodia_preah_khan1.jpg",
            "cambodia_preah_khan2.jpg",
            "cambodia_preah_khan3.jpg",
            "cambodia_preah_khan4.jpg",
            "cambodia_pre_rup1.jpg",
            "cambodia_pre_rup2.jpg",
            "cambodia_woman.jpg",
            "cambodia_bayon1.jpg",
            "cambodia_bayon2.jpg",
            "cambodia_bayon3.jpg",
            "cambodia_neak_pean.jpg",
            "cambodia_preah_khan1.jpg",
            "cambodia_preah_khan2.jpg",
            "cambodia_preah_khan3.jpg",
            "cambodia_preah_khan4.jpg",
            "cambodia_pre_rup1.jpg",
            "cambodia_pre_rup2.jpg",
            "cambodia_woman.jpg",
            "cambodia_angkorwat2.jpg",
            "cambodia_banteay_samre.jpg",
            "cambodia_bayon1.jpg",
            "cambodia_bayon2.jpg",
            "cambodia_bayon3.jpg",
            "cambodia_neak_pean.jpg",
            "cambodia_preah_khan1.jpg",
            "cambodia_preah_khan2.jpg",
            "cambodia_preah_khan3.jpg",
            "cambodia_preah_khan4.jpg",
            "cambodia_pre_rup1.jpg"
        };
        
        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);

            /* Load the bold and regular styles of a font */
            boldfont = p.load_font("Helvetica-Bold", "unicode", "");
            if (boldfont == -1)
                throw new Exception("Error: " + p.get_errmsg());
            
            regularfont = p.load_font("Helvetica", "unicode", "");
            if (regularfont == -1)
                throw new Exception("Error: " + p.get_errmsg());
            
            /* Start the output page */
            p.begin_page_ext(pagewidth, pageheight, "");

            /* Output the heading */
            p.setfont(boldfont, fontsize);
            p.fit_textline("Contact Sheets", llx, yheading, "");
     
            
            /* ------------------------------------------------------------------
             * For each photo add a cell containing an image and a text line with
             * the image file name
             * ------------------------------------------------------------------
             */
            
            /* Loop over all photos */
            col = 1; row = 1;
                   
            for (i = 0; i < imagefiles.length; i++) {
                image = -1;
                
                /* Load the photo */
                image = p.load_image("auto", imagefiles[i], "");
                if (image == -1)
                    throw new Exception("Error: " + p.get_errmsg());
                
                /* Add the cell containing the image.
                 * 
                 * "fitmethod=auto" scales the image so that it entirely fits into
                 * the cell while preserving its aspect ratio.
                 * "rowjoingroup" keeps image and text together on the same page. 
                 */
                String img_opts = 
                    " image=" + image + " fitimage={fitmethod=auto}" +
                    " colwidth=" + cw + " rowheight=" + img_rowheight +
                    " margin=" + img_margin + 
                    " rowjoingroup=group" + i;
                
                tbl = p.add_table_cell(tbl, col, row, "", img_opts);
                if (tbl == -1)
                    throw new Exception("Error adding cell: " + p.get_errmsg());
                
                /* Add the cell containing the text with the image file name.
                 * 
                 * "fitmethod=auto" scales the text so that it entirely fits into
                 * the cell. Note that if this option is not used the cell width 
                 * will be increased until the text fits completely into the cell.
                 * "rowjoingroup" keeps image and text together on the same page.
                 */
                String txt_opts = 
                    "fittextline={font=" + regularfont + " fitmethod=auto" +
                    " fontsize=9 fillcolor={gray 1} position={center}}" +
                    " colwidth=" + cw + " rowheight=" + txt_rowheight +
                    " margin=" + txt_margin +
                    " rowjoingroup=group" + i;
                
                tbl = p.add_table_cell(tbl, col, row + 1, imagefiles[i], txt_opts);
                if (tbl == -1)
                    throw new Exception("Error adding cell: " + p.get_errmsg());
                
                if (col < nocols) {
                    col++;
                }
                else { 
                    col = 1; row += 2;
                }
            } /* for */
                    
                 
            /* ------------------------------------
             * Place the table on one or more pages
             * ------------------------------------
             */
            
            /* Prepare the option list for fitting the table.
             * The "stroke" option will stroke every vertical line and every
             * second horizontal line in white with a line width of 0.3.
             * The "fill" option fills the complete table with a dark gray.
             */
            String stroke_opts = 
                "stroke={{line=vertother strokecolor={gray 1} linewidth=0.3}";
            
            for (i = 0, j = 2; i < imagefiles.length; i += nocols, j+=2) {
                stroke_opts +=
                    " {line=hor" + j + " strokecolor={gray 1} linewidth=0.3}";
            }
            stroke_opts += "} ";
            
            String fill_opts = "fill={{area=table fillcolor={rgb 0.1 0.1 0.1}}}";
            
            String fittab_opts = stroke_opts + fill_opts; 
                      
            /* Loop until all of the table is placed; create new pages as long as
             * more table instances need to be placed
             */
            do {
                /* Place the table instance */
                result = p.fit_table(tbl, llx, lly, urx, ury, fittab_opts);

                if (result.equals("_error"))
                    throw new Exception ("Couldn't place table: " +
                        p.get_errmsg());
                
                /* Start a new page */
                if (result.equals("_boxfull")) {
                    p.end_page_ext("");
                    p.begin_page_ext(pagewidth, pageheight, "");
                }
            } while (result.equals("_boxfull") || result.equals("break"));
            
            p.end_page_ext("");
           
            p.end_document("");
          
        } catch (PDFlibException e) {
            System.err.println("PDFlib exception occurred:");
            System.err.println("[" + e.get_errnum() + "] " + e.get_apiname() +
                ": " + e.get_errmsg());
            exitcode = 1;
        } catch (Exception e) {
            System.err.println(e.toString());
            exitcode = 1;
        } finally {
            if (p != null) {
                p.delete();
            }
            System.exit(exitcode);
        }
    }
}