#!/usr/bin/perl
# $Id: pdfclock.cgi.pl,v 1.15 2007/10/29 21:53:40 rjs Exp $
#
# PDFlib client: pdfclock CGI example in Perl
#

use pdflib_pl 8.0;

$RADIUS = 200.0;
$MARGIN = 20.0;

$p = PDF_new();

# This means we must check return values of load_font() etc.
PDF_set_parameter($p, "errorpolicy", "return");

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

PDF_begin_document($p, "", "");

PDF_set_info($p, "Creator", "pdfclock.cgi.pl");
PDF_set_info($p, "Author", "Thomas Merz");
PDF_set_info($p, "Title", "PDF clock (Perl/CGI)");

PDF_begin_page_ext($p, 2 * ($RADIUS + $MARGIN), 2 * ($RADIUS + $MARGIN), "");

PDF_translate($p, $RADIUS + $MARGIN, $RADIUS + $MARGIN);
PDF_setcolor($p, "fillstroke", "rgb", 0.0, 0.0, 1.0, 0.0);
PDF_save($p);

# minute strokes 
PDF_setlinewidth($p, 2.0);
for ($alpha = 0; $alpha < 360; $alpha += 6) {
    PDF_rotate($p, 6.0);
    PDF_moveto($p, $RADIUS, 0.0);
    PDF_lineto($p, $RADIUS-$MARGIN/3, 0.0);
    PDF_stroke($p);
}

PDF_restore($p);
PDF_save($p);

# 5 minute strokes
PDF_setlinewidth($p, 3.0);
for ($alpha = 0; $alpha < 360; $alpha += 30) {
    PDF_rotate($p, 30.0);
    PDF_moveto($p, $RADIUS, 0.0);
    PDF_lineto($p, $RADIUS-$MARGIN, 0.0);
    PDF_stroke($p);
}

($tm_sec,$tm_min,$tm_hour) = localtime(time);

# draw hour hand 
PDF_save($p);
PDF_rotate($p, (-(($tm_min/60.0) + $tm_hour - 3.0) * 30.0));
PDF_moveto($p, -$RADIUS/10, -$RADIUS/20);
PDF_lineto($p, $RADIUS/2, 0.0);
PDF_lineto($p, -$RADIUS/10, $RADIUS/20);
PDF_closepath($p);
PDF_fill($p);
PDF_restore($p);

# draw minute hand
PDF_save($p);
PDF_rotate($p, (-(($tm_sec/60.0) + $tm_min - 15.0) * 6.0));
PDF_moveto($p, -$RADIUS/10, -$RADIUS/20);
PDF_lineto($p, $RADIUS * 0.8, 0.0);
PDF_lineto($p, -$RADIUS/10, $RADIUS/20);
PDF_closepath($p);
PDF_fill($p);
PDF_restore($p);

# draw second hand
PDF_setcolor($p, "fillstroke", "rgb", 1.0, 0.0, 0.0, 0.0);
PDF_setlinewidth($p, 2);
PDF_save($p);
PDF_rotate($p, -(($tm_sec - 15.0) * 6.0));
PDF_moveto($p, -$RADIUS/5, 0.0);
PDF_lineto($p, $RADIUS, 0.0);
PDF_stroke($p);
PDF_restore($p);

# draw little circle at center
PDF_circle($p, 0, 0, $RADIUS/30);
PDF_fill($p);

PDF_restore($p);
PDF_end_page_ext($p, "");

PDF_end_document($p, "");

$buf = PDF_get_buffer($p);

# the following is required on Windows systems
binmode(STDOUT);

print "Content-Type: application/pdf\n";
print "Content-Length: " . length($buf) . "\n";
print "Content-Disposition: inline; filename=" . "pdfclock.cgi.pl.pdf" . "\n\n";
print $buf;

PDF_delete($p);
