#!/usr/bin/env perl
use warnings;
use strict;
use diagnostics;
use PDF::Table;

=pod 

This example file gives an overview of the functionalities provided by 
PDF::Table. Also it can be used to bootstrap your code.

=cut

# Please use TABSTOP=4 for best view
# -------------
# -A or -B on command line to select preferred library (if available)
# then look for PDFpref file and read A or B forms
my ($PDFpref, $rcA, $rcB); # which is available?
my $prefFile = "examples/PDFpref";
my $prefix = 0;  # by default, do not add a prefix to the output name
my $prefDefault = "B"; # PDF::Builder default if no prefFile, or both installed

# command line selection of preferred library? A..., -A..., B..., or -B...
if (@ARGV) {
    # A or -A argument: set PDFpref to A else B
    if ($ARGV[0] =~ m/^-?([AB])/i) {
	$PDFpref = uc($1);
	$prefix = 1;
    } else {
	print STDERR "Unknown command line flag $ARGV[0] ignored.\n";
    }
}
# environment variable selection of preferred library?
# A..., B..., PDF:[:]A..., or PDF:[:]B...
if (!defined $PDFpref) {
    if (defined $ENV{'PDF_prefLib'}) {
        $PDFpref = $ENV{'PDF_prefLib'};
        if      ($PDFpref =~ m/^A/i) {
	    # something starting with A, assume want PDF::API2
	    $PDFpref = 'A';
        } elsif ($PDFpref =~ m/^B/i) {
	    # something starting with B, assume want PDF::Builder
	    $PDFpref = 'B';
        } elsif ($PDFpref =~ m/^PDF:{1,2}A/i) {
	    # something starting with PDF:A or PDF::A, assume want PDF::API2
	    $PDFpref = 'A';
        } elsif ($PDFpref =~ m/^PDF:{1,2}B/i) {
	    # something starting with PDF:B or PDF::B, assume want PDF::Builder
	    $PDFpref = 'B';
        }
    }
}
# PDF preference file selecting preferred library?
# A..., B..., PDF:[:]A..., or PDF:[:]B...
if (!defined $PDFpref) {
    if (-f $prefFile && -r $prefFile) {
        open my $FH, '<', $prefFile or die "error opening $prefFile: $!\n";
        $PDFpref = <$FH>;
        if      ($PDFpref =~ m/^A/i) {
	    # something starting with A, assume want PDF::API2
	    $PDFpref = 'A';
        } elsif ($PDFpref =~ m/^B/i) {
	    # something starting with B, assume want PDF::Builder
	    $PDFpref = 'B';
        } elsif ($PDFpref =~ m/^PDF:{1,2}A/i) {
	    # something starting with PDF:A or PDF::A, assume want PDF::API2
	    $PDFpref = 'A';
        } elsif ($PDFpref =~ m/^PDF:{1,2}B/i) {
	    # something starting with PDF:B or PDF::B, assume want PDF::Builder
	    $PDFpref = 'B';
        }
        close $FH;
    }
}
# still no preferred library indicated? use the default
if (!defined $PDFpref) {
        # no preference expressed, default to PDF::Builder
        print STDERR "No library preference given, so default to ".
	  (($prefDefault eq 'A')? 'PDF::API2': 'PDF::Builder')." as preferred.\n";
        $PDFpref = $prefDefault;
}

# try to use the preferred library, if available
foreach (1 .. 2) {
    if ($PDFpref eq 'A') { # A(PI2) preferred
        $rcA = eval {
            require PDF::API2;
            1;
        };
        if (!defined $rcA) { $rcA = 0; } # else is 1;
        if ($rcA) { $rcB = 0; last; }
	$PDFpref = 'B';
    } 
    if ($PDFpref eq 'B') { # B(uilder) preferred
        $rcB = eval {
            require PDF::Builder;
            1;
        };
        if (!defined $rcB) { $rcB = 0; } # else is 1;
	if ($rcB) { $rcA = 0; last; }
	$PDFpref = 'A';
    }
}
if (!$rcA && !$rcB) {
    die "Neither PDF::API2 nor PDF::Builder is installed!\n";
}
# -------------

our $VERSION = '1.006'; # VERSION
our $LAST_UPDATE = '1.006'; # manually update whenever code is changed

my $outfile = $0;
if ($outfile =~ m#[\\/]([^\\/]+)$#) { $outfile = $1; }
$outfile =~ s/\.pl$/.pdf/;
# command line -A or -B adds A_ or B_ to outfile
if ($prefix) { $outfile = $PDFpref . "_" . $outfile; }

my $pdftable = PDF::Table->new();
# -------------
my $pdf;
if ($rcA) {
    print STDERR "Using PDF::API2 library\n";
    $pdf      = PDF::API2->new( -file => $outfile );
} else {
    print STDERR "Using PDF::Builder library\n";
    $pdf      = PDF::Builder->new( -file => $outfile, -compress => 'none' );
}
# -------------
my $page     = $pdf->page();
$pdf->mediabox('A4');

# A4 as defined by PDF::API2 is h=842 w=545 for portrait

# some data to lay out. I believe that it is partly Bulgarian, created by the
# previous owner of this package.
my $some_data = [
	[ 'Header', 'Row', 'Test' ],
	[
		'1 Lorem ipsum dolor',
		'Donec odio neque, faucibus vel',
		'1 consequat quis, tincidunt vel, felis.'
	],
	[ 'Nulla euismod sem eget neque.', 'Donec odio neque', 'Sed eu velit.' ],
	[
		'Az sym bulgarin',
		# column 2 has explicit \n's for 3 physical lines
		"i ne razbiram DESI\ngorniq \nezik",
		# column 3 has implied \n's for 4 physical lines
		# note that lines 2-4 have huge leading spaces stripped away
		"zatova reshih
		da dobavq
		edin ili dva
		novi reda"
	],
	[
		# extra row height requested with row_height (min_rh)
		'da dobavq edin dva reda',
		'v tozi primer AND extra height',
		'na bulgarski ezik s latinica'
	],
	[
		'5 Lorem ipsum dolor',
		'Donec odio neque, faucibus vel',
		'5 consequat quis, tincidunt vel, felis.'
	],
	[ 'Nulla euismod sem eget neque.', 'Donec odio neque', 'Sed eu velit.' ],
	[ 'Az sym bulgarin', 'i ne razbiram gorniq ezik', 'zatova reshih' ],
	[
		'da dobavq edin dva reda',
		'v tozi primer',
		'na bulgarski ezik s latinica'
	],
];

# build the table layout. like the data (text), the various properties and
# settings could be pulled out of line.
$pdftable->table(

	# required params
	$pdf,
	$page,
	$some_data,

	# Geometry of the document
	x        => 50,
	w        => 495,  # width: most of an A4 page
	y        => 792,
	next_y   => 700,
	h        => 400, # reduce to force overflow to new page
	next_h   => 500,

	# some optional params for fancy results
	padding        => 3,
	padding_right  => 10,
	bg_color_odd   => 'lightblue',
	bg_color_even  => "#EEEEAA",
	# using default font (Times-Roman 12pt)
	
	header_props          => {
		bg_color   => "#F0AAAA",
		font       => $pdf->corefont( "Helvetica", -encoding => "latin1" ),
		font_size  => 14,
		fg_color   => "#006600",
		repeat     => 1  # default
		# note that col 2 inherits RJ from column_props setting
	},
	column_props => [
		{},                    # no properties for the first column
		{                      # column 2 overrides: force wider,
			               # larger font, right-justified, own bg.
			min_w      => 250,
			justify    => "right",
			font       => $pdf->corefont( "Times-Roman", -encoding => "latin1" ),
			font_size  => 14, 
			fg_color   => 'white',
			bg_color   => '#8CA6C5',
		},
		                       # column 3 no overrides
	],
	cell_props => [
		[ # This is the first(header) row of the table and here 
		  # %header_prop has priority, so no effect with these settings
			{
				bg_color   => '#000000',
				fg_color   => 'blue',
			},

			# etc.
		],
		[ # Row 2 (first data row)
			{ # Row 2 col 1
				bg_color   => '#000000',
				fg_color   => 'white',
			},
			{ # Row 2 col 2
				bg_color   => '#AAAA00',
				fg_color   => 'red',
			},
			{ # Row 2 col 3
				bg_color   => '#FFFFFF',
				fg_color   => 'green',
			},

			# etc.
		],
		[ # Row 3 (second data row)
			{ # Row 3 cell 1
				bg_color   => '#AAAAAA',
				fg_color   => 'blue',
			},

			# etc. rest of columns are normal
		],

		# etc. rest of rows are normal
	],
	row_props => [
		{}, {}, {}, {},
		{ # Row 5 (4th data row)
			'min_rh'   => 75, # extra height on this row
		},
	],
);  # end of table() call

$pdf->save();