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| 1 |  |  |  |  |  |  | package Imager::Graph; | 
| 2 |  |  |  |  |  |  | require 5.006; | 
| 3 |  |  |  |  |  |  |  | 
| 4 |  |  |  |  |  |  | =head1 NAME | 
| 5 |  |  |  |  |  |  |  | 
| 6 |  |  |  |  |  |  | Imager::Graph - Perl extension for producing Graphs using the Imager library. | 
| 7 |  |  |  |  |  |  |  | 
| 8 |  |  |  |  |  |  | =head1 SYNOPSIS | 
| 9 |  |  |  |  |  |  |  | 
| 10 |  |  |  |  |  |  | use Imager::Graph::Sub_class; | 
| 11 |  |  |  |  |  |  | my $chart = Imager::Graph::Sub_class->new; | 
| 12 |  |  |  |  |  |  | my $img = $chart->draw(data=> \@data, ...) | 
| 13 |  |  |  |  |  |  | or die $chart->error; | 
| 14 |  |  |  |  |  |  | $img->write(file => 'image.png'); | 
| 15 |  |  |  |  |  |  |  | 
| 16 |  |  |  |  |  |  | =head1 DESCRIPTION | 
| 17 |  |  |  |  |  |  |  | 
| 18 |  |  |  |  |  |  | Imager::Graph provides style information to its base classes.  It | 
| 19 |  |  |  |  |  |  | defines the colors, text display information and fills based on both | 
| 20 |  |  |  |  |  |  | built-in styles and modifications supplied by the user to the draw() | 
| 21 |  |  |  |  |  |  | method. | 
| 22 |  |  |  |  |  |  |  | 
| 23 |  |  |  |  |  |  | =over | 
| 24 |  |  |  |  |  |  |  | 
| 25 |  |  |  |  |  |  | =cut | 
| 26 |  |  |  |  |  |  |  | 
| 27 | 15 |  |  | 15 |  | 77 | use strict; | 
|  | 15 |  |  |  |  | 19 |  | 
|  | 15 |  |  |  |  | 561 |  | 
| 28 | 15 |  |  | 15 |  | 65 | use vars qw($VERSION); | 
|  | 15 |  |  |  |  | 19 |  | 
|  | 15 |  |  |  |  | 639 |  | 
| 29 | 15 |  |  | 15 |  | 16327 | use Imager qw(:handy); | 
|  | 15 |  |  |  |  | 790899 |  | 
|  | 15 |  |  |  |  | 122 |  | 
| 30 | 15 |  |  | 15 |  | 13725 | use Imager::Fountain; | 
|  | 15 |  |  |  |  | 42114 |  | 
|  | 15 |  |  |  |  | 1120 |  | 
| 31 |  |  |  |  |  |  |  | 
| 32 |  |  |  |  |  |  | $VERSION = '0.12'; | 
| 33 |  |  |  |  |  |  |  | 
| 34 |  |  |  |  |  |  | # the maximum recursion depth in determining a color, fill or number | 
| 35 | 15 |  |  | 15 |  | 135 | use constant MAX_DEPTH => 10; | 
|  | 15 |  |  |  |  | 130 |  | 
|  | 15 |  |  |  |  | 175335 |  | 
| 36 |  |  |  |  |  |  |  | 
| 37 |  |  |  |  |  |  | my $NUM_RE = '(?:[+-]?(?:\d+(?:\.\d*)?|\.\d+)(?:[eE][+-]\d+?)?)'; | 
| 38 |  |  |  |  |  |  |  | 
| 39 |  |  |  |  |  |  | =item new | 
| 40 |  |  |  |  |  |  |  | 
| 41 |  |  |  |  |  |  | This is a simple constructor.  No parameters required. | 
| 42 |  |  |  |  |  |  |  | 
| 43 |  |  |  |  |  |  | =cut | 
| 44 |  |  |  |  |  |  |  | 
| 45 |  |  |  |  |  |  | sub new { | 
| 46 | 26 |  |  | 26 | 1 | 33728 | bless {}, $_[0]; | 
| 47 |  |  |  |  |  |  | } | 
| 48 |  |  |  |  |  |  |  | 
| 49 |  |  |  |  |  |  | =item set_graph_size($size) | 
| 50 |  |  |  |  |  |  |  | 
| 51 |  |  |  |  |  |  | Sets the size of the graph (in pixels) within the image.  The size of the image defaults to 1.5 * $graph_size. | 
| 52 |  |  |  |  |  |  |  | 
| 53 |  |  |  |  |  |  | =cut | 
| 54 |  |  |  |  |  |  |  | 
| 55 |  |  |  |  |  |  | sub set_graph_size { | 
| 56 | 2 |  |  | 2 | 1 | 22 | $_[0]->{'custom_style'}->{'size'} = $_[1]; | 
| 57 |  |  |  |  |  |  | } | 
| 58 |  |  |  |  |  |  |  | 
| 59 |  |  |  |  |  |  | =item set_image_width($width) | 
| 60 |  |  |  |  |  |  |  | 
| 61 |  |  |  |  |  |  | Sets the width of the image in pixels. | 
| 62 |  |  |  |  |  |  |  | 
| 63 |  |  |  |  |  |  | =cut | 
| 64 |  |  |  |  |  |  |  | 
| 65 |  |  |  |  |  |  | sub set_image_width { | 
| 66 | 3 |  |  | 3 | 1 | 38 | $_[0]->{'custom_style'}->{'width'} = $_[1]; | 
| 67 |  |  |  |  |  |  | } | 
| 68 |  |  |  |  |  |  |  | 
| 69 |  |  |  |  |  |  | =item set_image_height($height) | 
| 70 |  |  |  |  |  |  |  | 
| 71 |  |  |  |  |  |  | Sets the height of the image in pixels. | 
| 72 |  |  |  |  |  |  |  | 
| 73 |  |  |  |  |  |  | =cut | 
| 74 |  |  |  |  |  |  |  | 
| 75 |  |  |  |  |  |  | sub set_image_height { | 
| 76 | 3 |  |  | 3 | 1 | 32 | $_[0]->{'custom_style'}->{'height'} = $_[1]; | 
| 77 |  |  |  |  |  |  | } | 
| 78 |  |  |  |  |  |  |  | 
| 79 |  |  |  |  |  |  | =item add_data_series([8, 6, 7, 5, 3, 0, 9], 'Series Name'); | 
| 80 |  |  |  |  |  |  |  | 
| 81 |  |  |  |  |  |  | Adds a data series to the graph.  For L, only one data series can be added. | 
| 82 |  |  |  |  |  |  |  | 
| 83 |  |  |  |  |  |  | =cut | 
| 84 |  |  |  |  |  |  |  | 
| 85 |  |  |  |  |  |  | sub add_data_series { | 
| 86 | 5 |  |  | 5 | 1 | 55 | my $self = shift; | 
| 87 | 5 |  |  |  |  | 9 | my $data_ref = shift; | 
| 88 | 5 |  |  |  |  | 16 | my $series_name = shift; | 
| 89 |  |  |  |  |  |  |  | 
| 90 | 5 |  | 50 |  |  | 61 | my $graph_data = $self->{'graph_data'} || []; | 
| 91 |  |  |  |  |  |  |  | 
| 92 | 5 |  |  |  |  | 36 | push @$graph_data, { data => $data_ref, series_name => $series_name }; | 
| 93 | 5 | 100 |  |  |  | 22 | if (defined $series_name) { | 
| 94 | 3 |  |  |  |  | 6 | push @{$self->{'labels'}}, $series_name; | 
|  | 3 |  |  |  |  | 13 |  | 
| 95 |  |  |  |  |  |  | } | 
| 96 |  |  |  |  |  |  |  | 
| 97 | 5 |  |  |  |  | 18 | $self->{'graph_data'} = $graph_data; | 
| 98 | 5 |  |  |  |  | 17 | return; | 
| 99 |  |  |  |  |  |  | } | 
| 100 |  |  |  |  |  |  |  | 
| 101 |  |  |  |  |  |  | sub _get_data_series { | 
| 102 | 315 |  |  | 315 |  | 383 | my ($self, $opts) = @_; | 
| 103 |  |  |  |  |  |  |  | 
| 104 |  |  |  |  |  |  | # return the data supplied to draw() if any. | 
| 105 | 315 | 100 |  |  |  | 769 | if ($opts->{data}) { | 
| 106 |  |  |  |  |  |  | # one or multiple series? | 
| 107 | 19 |  |  |  |  | 47 | my $data = $opts->{data}; | 
| 108 | 19 | 50 | 66 |  |  | 179 | if (@$data && ref $data->[0] && ref $data->[0] =~ /ARRAY/) { | 
|  |  |  | 33 |  |  |  |  | 
| 109 | 0 |  |  |  |  | 0 | return $data; | 
| 110 |  |  |  |  |  |  | } | 
| 111 |  |  |  |  |  |  | else { | 
| 112 | 19 |  |  |  |  | 117 | return [ { data => $data } ]; | 
| 113 |  |  |  |  |  |  | } | 
| 114 |  |  |  |  |  |  | } | 
| 115 |  |  |  |  |  |  |  | 
| 116 | 296 |  |  |  |  | 1347 | return $self->{'graph_data'}; | 
| 117 |  |  |  |  |  |  | } | 
| 118 |  |  |  |  |  |  |  | 
| 119 |  |  |  |  |  |  | =item set_labels(['label1', 'label2' ... ]) | 
| 120 |  |  |  |  |  |  |  | 
| 121 |  |  |  |  |  |  | Labels the specific data points.  For line/bar graphs, this is the x-axis.  For pie graphs, it is the label for the wedges. | 
| 122 |  |  |  |  |  |  |  | 
| 123 |  |  |  |  |  |  | =cut | 
| 124 |  |  |  |  |  |  |  | 
| 125 |  |  |  |  |  |  | sub set_labels { | 
| 126 | 20 |  |  | 20 | 1 | 225 | $_[0]->{'labels'} = $_[1]; | 
| 127 |  |  |  |  |  |  | } | 
| 128 |  |  |  |  |  |  |  | 
| 129 |  |  |  |  |  |  | sub _get_labels { | 
| 130 | 86 |  |  | 86 |  | 130 | my ($self, $opts) = @_; | 
| 131 |  |  |  |  |  |  |  | 
| 132 | 86 | 100 |  |  |  | 376 | $opts->{labels} | 
| 133 |  |  |  |  |  |  | and return $opts->{labels}; | 
| 134 |  |  |  |  |  |  |  | 
| 135 | 64 |  |  |  |  | 264 | return $_[0]->{'labels'} | 
| 136 |  |  |  |  |  |  | } | 
| 137 |  |  |  |  |  |  |  | 
| 138 |  |  |  |  |  |  | =item set_title($title) | 
| 139 |  |  |  |  |  |  |  | 
| 140 |  |  |  |  |  |  | Sets the title of the graph.  Requires setting a font. | 
| 141 |  |  |  |  |  |  |  | 
| 142 |  |  |  |  |  |  | =cut | 
| 143 |  |  |  |  |  |  |  | 
| 144 |  |  |  |  |  |  | sub set_title { | 
| 145 | 2 |  |  | 2 | 1 | 25 | $_[0]->{'custom_style'}->{'title'}->{'text'} = $_[1]; | 
| 146 |  |  |  |  |  |  | } | 
| 147 |  |  |  |  |  |  |  | 
| 148 |  |  |  |  |  |  | =item set_font($font) | 
| 149 |  |  |  |  |  |  |  | 
| 150 |  |  |  |  |  |  | Sets the font to use for text.  Takes an L object. | 
| 151 |  |  |  |  |  |  |  | 
| 152 |  |  |  |  |  |  | =cut | 
| 153 |  |  |  |  |  |  |  | 
| 154 |  |  |  |  |  |  | sub set_font { | 
| 155 | 11 |  |  | 11 | 1 | 1090 | $_[0]->{'custom_style'}->{'font'} = $_[1]; | 
| 156 |  |  |  |  |  |  | } | 
| 157 |  |  |  |  |  |  |  | 
| 158 |  |  |  |  |  |  | =item set_style($style_name) | 
| 159 |  |  |  |  |  |  |  | 
| 160 |  |  |  |  |  |  | Sets the style to be used for the graph.  Imager::Graph comes with several pre-defined styles: fount_lin (default), fount_rad, mono, primary_red, and primary. | 
| 161 |  |  |  |  |  |  |  | 
| 162 |  |  |  |  |  |  | =cut | 
| 163 |  |  |  |  |  |  |  | 
| 164 |  |  |  |  |  |  | sub set_style { | 
| 165 | 5 |  |  | 5 | 1 | 54 | $_[0]->{'style'} = $_[1]; | 
| 166 |  |  |  |  |  |  | } | 
| 167 |  |  |  |  |  |  |  | 
| 168 |  |  |  |  |  |  | sub _get_style { | 
| 169 | 39 |  |  | 39 |  | 69 | my ($self, $opts) = @_; | 
| 170 |  |  |  |  |  |  |  | 
| 171 | 39 | 100 |  |  |  | 150 | $opts->{style} | 
| 172 |  |  |  |  |  |  | and return $opts->{style}; | 
| 173 |  |  |  |  |  |  |  | 
| 174 | 34 |  |  |  |  | 187 | return $self->{'style'}; | 
| 175 |  |  |  |  |  |  | } | 
| 176 |  |  |  |  |  |  |  | 
| 177 |  |  |  |  |  |  | =item error | 
| 178 |  |  |  |  |  |  |  | 
| 179 |  |  |  |  |  |  | Returns an error message.  Only valid if the draw() method returns false. | 
| 180 |  |  |  |  |  |  |  | 
| 181 |  |  |  |  |  |  | =cut | 
| 182 |  |  |  |  |  |  |  | 
| 183 |  |  |  |  |  |  | sub error { | 
| 184 | 10 |  |  | 10 | 1 | 43430 | $_[0]->{_errstr}; | 
| 185 |  |  |  |  |  |  | } | 
| 186 |  |  |  |  |  |  |  | 
| 187 |  |  |  |  |  |  | =item draw | 
| 188 |  |  |  |  |  |  |  | 
| 189 |  |  |  |  |  |  | Creates a new image, draws the chart onto that image and returns it. | 
| 190 |  |  |  |  |  |  |  | 
| 191 |  |  |  |  |  |  | Optionally, instead of using the api methods to configure your chart, | 
| 192 |  |  |  |  |  |  | you can supply a C parameter in the format | 
| 193 |  |  |  |  |  |  | required by that particular graph, and if your graph will use any | 
| 194 |  |  |  |  |  |  | text, a C parameter | 
| 195 |  |  |  |  |  |  |  | 
| 196 |  |  |  |  |  |  | You can also supply many different parameters which control the way | 
| 197 |  |  |  |  |  |  | the graph looks.  These are supplied as keyword, value pairs, where | 
| 198 |  |  |  |  |  |  | the value can be a hashref containing sub values. | 
| 199 |  |  |  |  |  |  |  | 
| 200 |  |  |  |  |  |  | The C |