#!/usr/bin/perl
# $Id: invoice.pl,v 1.5.2.2 2003/12/17 15:38:01 tm Exp $
#
# PDFlib client: invoice generation demo
#

use pdflib_pl 5.0;

$col1 = 55;
$col2 = 100;
$col3 = 330;
$col4 = 430;
$col5 = 530;
$fontsize = 12;
$pagewidth = 595;
$pageheight = 842;
$fontsize = 12;
$infile = "stationery.pdf";
# This is where font/image/PDF input files live. Adjust as necessary.
$searchpath = "../data";
$closingtext = 
	"30 days warranty starting at the day of sale. " .
	"This warranty covers defects in workmanship only. " .
	"Kraxi Systems, Inc. will, at its option, repair or replace the " .
	"product under the warranty. This warranty is not transferable. " .
	"No returns or exchanges will be accepted for wet products.";

@data = (   {name=>"Super Kite", 	price=>20,	quantity=>2},
	    {name=>"Turbo Flyer", 	price=>40, 	quantity=>5},
	    {name=>"Giga Trasch", 	price=>180, 	quantity=>1},
	    {name=>"Bare Bone Kit", 	price=>50, 	quantity=>3},
	    {name=>"Nitty Gritty", 	price=>20, 	quantity=>10},
	    {name=>"Pretty Dark Flyer",	price=>75, 	quantity=>1},
	    {name=>"Free Gift", 	price=>0, 	quantity=>1}
	);

@months = ( "January", "February", "March", "April", "May", "June",
	    "July", "August", "September", "October", "November", "December");

# create a new PDFlib object
$p = PDF_new();

eval {
    # open new PDF file
    if (PDF_open_file($p, "invoice.pdf") == -1){
	printf("Error: %s\n", PDF_get_errmsg($p));
	exit;
    }

    PDF_set_parameter($p, "SearchPath", $searchpath);

    # This line is required to avoid problems on Japanese systems
    PDF_set_parameter($p, "hypertextencoding", "winansi");

    PDF_set_info($p, "Creator", "invoice.pl");
    PDF_set_info($p, "Author", "Thomas Merz");
    PDF_set_info($p, "Title", "PDFlib invoice generation demo (Perl)");

    $form = PDF_open_pdi($p, $infile, "", 0);
    if ($form == -1){
	printf("Error: %s\n", PDF_get_errmsg($p));
	exit;
    }

    $page = PDF_open_pdi_page($p, $form, 1, "");
    if ($page == -1){
	printf("Error: %s\n", PDF_get_errmsg($p));
	exit;
    }


    $boldfont = PDF_load_font($p, "Helvetica-Bold", "winansi", "");
    $regularfont = PDF_load_font($p, "Helvetica", "winansi", "");
    $leading = $fontsize + 2;

    # Establish coordinates with the origin in the upper left corner.
    PDF_set_parameter($p, "topdown", "true");

    PDF_begin_page($p, $pagewidth, $pageheight);		# A4 page

    PDF_fit_pdi_page($p, $page, 0, $pageheight, "");
    PDF_close_pdi_page($p, $page);

    PDF_setfont($p, $regularfont, $fontsize);

    # print the address
    $y = 170;
    PDF_set_value($p, "leading", $leading);

    PDF_show_xy($p, "John Q. Doe", $col1, $y);
    PDF_continue_text($p, "255 Customer Lane");
    PDF_continue_text($p, "Suite B");
    PDF_continue_text($p, "12345 User Town");
    PDF_continue_text($p, "Everland");

    # print the header and date

    PDF_setfont($p, $boldfont, $fontsize);
    $y = 300;
    PDF_show_xy($p, "INVOICE", $col1, $y);

    $buf = sprintf("%s %d, %d", $months[(localtime)[4]], (localtime)[3],
    (localtime)[5]+1900);
    PDF_fit_textline($p, $buf, $col5, $y, "position {100 0}");


    # print the invoice header line
    PDF_setfont($p, $boldfont, $fontsize);

    # "position {0 0}" is left-aligned, "position {100 0}" right-aligned
    $y = 370;
    PDF_fit_textline($p, "ITEM",             $col1, $y, "position {0 0}");
    PDF_fit_textline($p, "DESCRIPTION",      $col2, $y, "position {0 0}");
    PDF_fit_textline($p, "QUANTITY",         $col3, $y, "position {100 0}");
    PDF_fit_textline($p, "PRICE",            $col4, $y, "position {100 0}");
    PDF_fit_textline($p, "AMOUNT",           $col5, $y, "position {100 0}");

    PDF_setfont($p, $regularfont, $fontsize);
    $y += 2*$leading;
    $total = 0;
    for ($i = 0; $i <= $#data; $i++){
	PDF_show_xy($p, $i+1, $col1, $y);

	PDF_show_xy($p, $data[$i]{name}, $col2, $y);
	PDF_fit_textline($p, $data[$i]{quantity}, $col3, $y, "position {100 0}");
	PDF_fit_textline($p, $data[$i]{price}, $col4, $y, "position {100 0}");
	$sum = $data[$i]{price}*$data[$i]{quantity};
	$buf = sprintf("%.2f", $sum);
	PDF_fit_textline($p, $buf, $col5, $y, "position {100 0}");
	$y += $leading;
	$total +=$sum;
    }

    $y += $leading;
    PDF_setfont($p, $boldfont, $fontsize);
    PDF_fit_textline($p,sprintf("%.2f",$total), $col5, $y, "position {100 0}");

    # Print the closing text

    $y +=5*$leading;
    PDF_setfont($p, $regularfont, $fontsize);
    PDF_set_value($p, "leading", $leading);
    PDF_show_boxed($p, $closingtext,
	$col1, $y + 4*$leading, $col5-$col1, 4*$leading, "justify", "");

    PDF_end_page($p);
    PDF_close($p);
    PDF_close_pdi($p, $form);
};
if ($@) {
    printf("invoice: PDFlib Exception occurred:\n");
    printf(" $@\n");
    exit;
}

PDF_delete($p);