/usr/share/perl5/SVG/Graph/Glyph/bar.pm is in libsvg-graph-perl 0.02-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 | package SVG::Graph::Glyph::bar;
use base SVG::Graph::Glyph;
use strict;
use Data::Dumper;
our @lifts;
=head1 NAME
SVG::Graph::Glyph::bar - SVG::Graph::Glyph::bar object
=head1 METHODS
=head2 draw
Title : draw
Usage :
Function:
Example :
Returns :
Args :
=cut
sub draw{
my ($self,@args) = @_;
my($x1,$x2,$y1,$y2) = (undef,undef,undef,undef);
#this will be the width of a bar, we need to calculate the
#minimum distance between any two values in the data,
#and use that as the step size.
my $step = undef;
my %xcoords = map {$_->x => 1} $self->group->data;
($x1,$x2) = (undef,undef);
foreach my $xcoord (sort {$a <=> $b} keys %xcoords){
$x1 = $xcoord and next unless defined($x1);
$x2 = $xcoord;
if(!defined($step)){
$step = $x2 - $x1;
} else {
$step = $x2 - $x1 < $step ? $x2 - $x1 : $step;
}
$x1 = $x2;
}
if($self->group->stack){
foreach my $data ($self->group->data_chunks){
my @newlifts = $self->_bars($step,\@lifts,[$data->data]);
my $i = 0;
foreach my $newlift (@newlifts){
$lifts[$i] += $newlift;
$i++;
}
}
} else {
$self->_bars($step,\@lifts,[$self->group->data]);
}
}
sub _bars {
my $self = shift;
my($step,$lifts,$data) = @_;
my @ls = ();
my $l;
#FIXME this logic is fubar, but it keeps things in proper scale.
my $yscale;
if($self->group->stack){
$yscale = $self->ysize / ($self->group->_parent_group->ymax);
} else {
$yscale = $self->yscale;
}
#AD: umm... why?
#xscale is ++'d for fencepost error
my $w = ($self->xsize - ($step * ($self->xscale))) / ($self->group->xrange); #+1
my $lift;
my ($x1,$x2,$y1,$y2) = (
(($self->group->xmin - $self->group->xmin) * ($self->xscale)) + $self->xoffset, #+1
undef,
($self->ysize - ($self->group->ymin - $self->group->ymin) * $yscale) + $self->yoffset,
undef,
);
foreach my $datum (sort {$a->x <=> $b->x} @$data){
$lift = shift @$lifts;
push @ls, ($self->ysize - $y1 + $self->yoffset) + $lift;
if(!defined($x1) and !defined($y1)){
$x1 = (($datum->x - $self->group->xmin) * $w) + $self->xoffset;
$y1 = ($self->ysize - ($datum->y - $self->group->ymin) * $yscale) + $self->yoffset;
next;
}
$x2 = (($datum->x - $self->group->xmin) * $w) + $self->xoffset;
$y2 = ($self->ysize - ($datum->y - $self->group->ymin) * $yscale) + $self->yoffset;
$self->canvas->rectangle(
x=>$x1,
y=>$y1 - $lift,
width => $w,
height=>$self->ysize - $y1 + $self->yoffset,
style=>{$self->_style}
);
$x1 = $x2;
$y1 = $y2;
}
$lift = shift @$lifts;
push @ls, ($self->ysize - $y1 + $self->yoffset) + $lift;
#plot the last data bar
$self->canvas->rectangle(
x=>$x1,
y=>$y1 - $lift,
width=>$w,
height=>$self->ysize - $y1 + $self->yoffset,
style=>{$self->_style}
);
return @ls;
}
1;
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