--- /dev/null
+package Imager::Graph::Horizontal;
+
+=head1 NAME
+
+ Imager::Graph::Horizontal - A super class for line/bar charts
+
+=cut
+
+use strict;
+use vars qw(@ISA);
+use Imager::Graph;
+@ISA = qw(Imager::Graph);
+
+use constant STARTING_MIN_VALUE => 99999;
+
+=over 4
+
+=item add_data_series(\@data, $series_name)
+
+Add a data series to the graph, of the default type.
+
+=cut
+
+sub add_data_series {
+ my $self = shift;
+ my $data_ref = shift;
+ my $series_name = shift;
+
+ my $series_type = $self->_get_default_series_type();
+ $self->_add_data_series($series_type, $data_ref, $series_name);
+
+ return;
+}
+
+=item add_column_data_series(\@data, $series_name)
+
+Add a column data series to the graph.
+
+=cut
+
+sub add_column_data_series {
+ my $self = shift;
+ my $data_ref = shift;
+ my $series_name = shift;
+
+ $self->_add_data_series('column', $data_ref, $series_name);
+
+ return;
+}
+
+=item add_line_data_series(\@data, $series_name)
+
+Add a line data series to the graph.
+
+=cut
+
+sub add_line_data_series {
+ my $self = shift;
+ my $data_ref = shift;
+ my $series_name = shift;
+
+ $self->_add_data_series('line', $data_ref, $series_name);
+
+ return;
+}
+
+=item set_column_padding($int)
+
+Sets the number of pixels that should go between columns of data.
+
+=cut
+
+sub set_column_padding {
+ $_[0]->{'custom_style'}->{'column_padding'} = $_[1];
+}
+
+=item set_negative_background($color)
+
+Sets the background color used below the x axis.
+
+=cut
+
+sub set_negative_background {
+ $_[0]->{'custom_style'}->{'negative_bg'} = $_[1];
+}
+
+=item draw()
+
+Draw the graph
+
+=cut
+
+sub draw {
+ my ($self, %opts) = @_;
+
+ if (!$self->_valid_input()) {
+ return;
+ }
+
+ $self->_style_setup(\%opts);
+
+ my $style = $self->{_style};
+
+ my $img = $self->_get_image()
+ or return;
+
+ my @image_box = ( 0, 0, $img->getwidth-1, $img->getheight-1 );
+ $self->_set_image_box(\@image_box);
+
+ my @chart_box = ( 0, 0, $img->getwidth-1, $img->getheight-1 );
+ $self->_draw_legend(\@chart_box);
+ if ($style->{title}{text}) {
+ $self->_draw_title($img, \@chart_box)
+ or return;
+ }
+
+ # Scale the graph box down to the widest graph that can cleanly hold the # of columns.
+ return unless $self->_get_data_range();
+ $self->_remove_tics_from_chart_box(\@chart_box);
+ my $column_count = $self->_get_column_count();
+
+ my $width = $self->_get_number('width');
+ my $height = $self->_get_number('height');
+
+ my $graph_width = $chart_box[2] - $chart_box[0];
+ my $graph_height = $chart_box[3] - $chart_box[1];
+
+ my $col_height = int(($graph_height - 1) / $column_count) -1;
+ $graph_height = $col_height * $column_count + 1;
+
+ my $tic_count = $self->_get_x_tics();
+ my $tic_distance = int(($graph_width -1) / ($tic_count - 1));
+ $graph_width = $tic_distance * ($tic_count - 1);
+
+ my $bottom = $chart_box[1];
+ my $left = $chart_box[0];
+
+ $self->{'_style'}{'graph_width'} = $graph_width;
+ $self->{'_style'}{'graph_height'} = $graph_height;
+
+ my @graph_box = ($left, $bottom, $left + $graph_width, $bottom + $graph_height);
+ $self->_set_graph_box(\@graph_box);
+
+ $img->box(
+ color => $self->_get_color('outline.line'),
+ xmin => $left,
+ xmax => $left+$graph_width,
+ ymin => $bottom,
+ ymax => $bottom+$graph_height,
+ );
+
+ $img->box(
+ color => $self->_get_color('bg'),
+ xmin => $left + 1,
+ xmax => $left+$graph_width - 1,
+ ymin => $bottom + 1,
+ ymax => $bottom+$graph_height-1 ,
+ filled => 1,
+ );
+
+ my $min_value = $self->_get_min_value();
+ my $max_value = $self->_get_max_value();
+ my $value_range = $max_value - $min_value;
+
+ my $zero_position;
+ if ($value_range) {
+ $zero_position = $left + (-1*$min_value / $value_range) * ($graph_width-1);
+ }
+
+ if ($min_value < 0) {
+ $img->box(
+ color => $self->_get_color('negative_bg'),
+ xmin => $left+1,
+ xmax => $zero_position,
+ ymin => $bottom+1,
+ ymax => $bottom+$graph_height - 1,
+ filled => 1,
+ );
+ $img->line(
+ x1 => $zero_position,
+ y1 => $bottom,
+ x2 => $zero_position,
+ y2 => $bottom + $graph_height,
+ color => $self->_get_color('outline.line'),
+ );
+ }
+
+ if ($self->_get_data_series()->{'bar'}) {
+ $self->_draw_bars();
+ }
+
+ if ($self->_get_x_tics()) {
+ $self->_draw_x_tics();
+ }
+ if ($self->_get_labels()) {
+ $self->_draw_y_tics();
+ }
+
+ return $self->_get_image();
+}
+
+sub _get_data_range {
+ my $self = shift;
+
+ my $max_value = 0;
+ my $min_value = 0;
+ my $column_count = 0;
+
+ my ($b_min, $b_max, $b_cols) = $self->_get_bar_range();
+
+ $min_value = $b_min;
+ $max_value = $b_max;
+ $column_count = $b_cols;
+# $min_value = $self->_min(STARTING_MIN_VALUE, $c_min, $l_min);
+# $max_value = $self->_max(0, $sc_max, $c_max, $l_max);
+
+ if ($self->_get_number('automatic_axis')) {
+ # In case this was set via a style, and not by the api method
+ eval { require Chart::Math::Axis; };
+ if ($@) {
+ return $self->_error("Can't use automatic_axis - $@");
+ }
+
+ my $axis = Chart::Math::Axis->new();
+ $axis->include_zero();
+ $axis->add_data($min_value, $max_value);
+ $max_value = $axis->top;
+ $min_value = $axis->bottom;
+ my $ticks = $axis->ticks;
+ # The +1 is there because we have the bottom tick as well
+ $self->set_x_tics($ticks+1);
+ }
+
+ $self->_set_max_value($max_value);
+ $self->_set_min_value($min_value);
+ $self->_set_column_count($column_count);
+
+ return 1;
+}
+
+sub _min {
+ my $self = shift;
+ my $min = shift;
+
+ foreach my $value (@_) {
+ next unless defined $value;
+ if ($value < $min) { $min = $value; }
+ }
+ return $min;
+}
+
+sub _max {
+ my $self = shift;
+ my $min = shift;
+
+ foreach my $value (@_) {
+ next unless defined $value;
+ if ($value > $min) { $min = $value; }
+ }
+ return $min;
+}
+
+sub _get_bar_range {
+ my $self = shift;
+
+ my $series = $self->_get_data_series()->{'bar'};
+ return (undef, undef, 0) unless $series;
+
+ my $max_value = 0;
+ my $min_value = STARTING_MIN_VALUE;
+ my $column_count = 0;
+
+ my @series = @{$series};
+ foreach my $series (@series) {
+ my @data = @{$series->{'data'}};
+
+ foreach my $value (@data) {
+ $column_count++;
+ if ($value > $max_value) { $max_value = $value; }
+ if ($value < $min_value) { $min_value = $value; }
+ }
+ }
+
+ return ($min_value, $max_value, $column_count);
+}
+
+
+sub _draw_legend {
+ my $self = shift;
+ my $chart_box = shift;
+ my $style = $self->{'_style'};
+
+ my @labels;
+ my $img = $self->_get_image();
+ if (my $series = $self->_get_data_series()->{'bar'}) {
+ push @labels, map { $_->{'series_name'} } @$series;
+ }
+
+ if ($style->{features}{legend} && (scalar @labels)) {
+ $self->SUPER::_draw_legend($self->_get_image(), \@labels, $chart_box)
+ or return;
+ }
+ return;
+}
+
+sub _draw_flat_legend {
+ return 1;
+}
+
+sub _draw_lines {
+ my $self = shift;
+ my $style = $self->{'_style'};
+
+ my $img = $self->_get_image();
+
+ my $max_value = $self->_get_max_value();
+ my $min_value = $self->_get_min_value();
+ my $column_count = $self->_get_column_count();
+
+ my $value_range = $max_value - $min_value;
+
+ my $width = $self->_get_number('width');
+ my $height = $self->_get_number('height');
+
+ my $graph_width = $self->_get_number('graph_width');
+ my $graph_height = $self->_get_number('graph_height');
+
+ my $line_series = $self->_get_data_series()->{'line'};
+ my $series_counter = $self->_get_series_counter() || 0;
+
+ my $has_columns = (defined $self->_get_data_series()->{'column'} || $self->_get_data_series->{'stacked_column'}) ? 1 : 0;
+
+ my $col_width = int($graph_width / $column_count) -1;
+
+ my $graph_box = $self->_get_graph_box();
+ my $left = $graph_box->[0] + 1;
+ my $bottom = $graph_box->[1];
+
+ my $zero_position = $bottom + $graph_height - (-1*$min_value / $value_range) * ($graph_height - 1);
+
+
+ my $line_aa = $self->_get_number("lineaa");
+ foreach my $series (@$line_series) {
+ my @data = @{$series->{'data'}};
+ my $data_size = scalar @data;
+
+ my $interval;
+ if ($has_columns) {
+ $interval = $graph_width / ($data_size);
+ }
+ else {
+ $interval = $graph_width / ($data_size - 1);
+ }
+ my $color = $self->_data_color($series_counter);
+
+ # We need to add these last, otherwise the next line segment will overwrite half of the marker
+ my @marker_positions;
+ for (my $i = 0; $i < $data_size - 1; $i++) {
+ my $x1 = $left + $i * $interval;
+ my $x2 = $left + ($i + 1) * $interval;
+
+ $x1 += $has_columns * $interval / 2;
+ $x2 += $has_columns * $interval / 2;
+
+ my $y1 = $bottom + ($value_range - $data[$i] + $min_value)/$value_range * $graph_height;
+ my $y2 = $bottom + ($value_range - $data[$i + 1] + $min_value)/$value_range * $graph_height;
+
+ push @marker_positions, [$x1, $y1];
+ $img->line(x1 => $x1, y1 => $y1, x2 => $x2, y2 => $y2, aa => $line_aa, color => $color) || die $img->errstr;
+ }
+
+ my $x2 = $left + ($data_size - 1) * $interval;
+ $x2 += $has_columns * $interval / 2;
+
+ my $y2 = $bottom + ($value_range - $data[$data_size - 1] + $min_value)/$value_range * $graph_height;
+
+ push @marker_positions, [$x2, $y2];
+ foreach my $position (@marker_positions) {
+ $self->_draw_line_marker($position->[0], $position->[1], $series_counter);
+ }
+ $series_counter++;
+ }
+
+ $self->_set_series_counter($series_counter);
+ return;
+}
+
+sub _line_marker {
+ my ($self, $index) = @_;
+
+ my $markers = $self->{'_style'}{'line_markers'};
+ if (!$markers) {
+ return;
+ }
+ my $marker = $markers->[$index % @$markers];
+
+ return $marker;
+}
+
+sub _draw_line_marker {
+ my $self = shift;
+ my ($x1, $y1, $series_counter) = @_;
+
+ my $img = $self->_get_image();
+
+ my $style = $self->_line_marker($series_counter);
+ return unless $style;
+
+ my $type = $style->{'shape'};
+ my $radius = $style->{'radius'};
+
+ my $line_aa = $self->_get_number("lineaa");
+ my $fill_aa = $self->_get_number("fill.aa");
+ if ($type eq 'circle') {
+ my @fill = $self->_data_fill($series_counter, [$x1 - $radius, $y1 - $radius, $x1 + $radius, $y1 + $radius]);
+ $img->circle(x => $x1, y => $y1, r => $radius, aa => $fill_aa, filled => 1, @fill);
+ }
+ elsif ($type eq 'square') {
+ my @fill = $self->_data_fill($series_counter, [$x1 - $radius, $y1 - $radius, $x1 + $radius, $y1 + $radius]);
+ $img->box(xmin => $x1 - $radius, ymin => $y1 - $radius, xmax => $x1 + $radius, ymax => $y1 + $radius, @fill);
+ }
+ elsif ($type eq 'diamond') {
+ # The gradient really doesn't work for diamond
+ my $color = $self->_data_color($series_counter);
+ $img->polygon(
+ points => [
+ [$x1 - $radius, $y1],
+ [$x1, $y1 + $radius],
+ [$x1 + $radius, $y1],
+ [$x1, $y1 - $radius],
+ ],
+ filled => 1, color => $color, aa => $fill_aa);
+ }
+ elsif ($type eq 'triangle') {
+ # The gradient really doesn't work for triangle
+ my $color = $self->_data_color($series_counter);
+ $img->polygon(
+ points => [
+ [$x1 - $radius, $y1 + $radius],
+ [$x1 + $radius, $y1 + $radius],
+ [$x1, $y1 - $radius],
+ ],
+ filled => 1, color => $color, aa => $fill_aa);
+
+ }
+ elsif ($type eq 'x') {
+ my $color = $self->_data_color($series_counter);
+ $img->line(x1 => $x1 - $radius, y1 => $y1 -$radius, x2 => $x1 + $radius, y2 => $y1+$radius, aa => $line_aa, color => $color) || die $img->errstr;
+ $img->line(x1 => $x1 + $radius, y1 => $y1 -$radius, x2 => $x1 - $radius, y2 => $y1+$radius, aa => $line_aa, color => $color) || die $img->errstr;
+ }
+ elsif ($type eq 'plus') {
+ my $color = $self->_data_color($series_counter);
+ $img->line(x1 => $x1, y1 => $y1 -$radius, x2 => $x1, y2 => $y1+$radius, aa => $line_aa, color => $color) || die $img->errstr;
+ $img->line(x1 => $x1 + $radius, y1 => $y1, x2 => $x1 - $radius, y2 => $y1, aa => $line_aa, color => $color) || die $img->errstr;
+ }
+}
+
+sub _draw_bars {
+ my $self = shift;
+ my $style = $self->{'_style'};
+
+ my $img = $self->_get_image();
+
+ my $max_value = $self->_get_max_value();
+ my $min_value = $self->_get_min_value();
+ my $column_count = $self->_get_column_count();
+
+ my $value_range = $max_value - $min_value;
+
+ my $width = $self->_get_number('width');
+ my $height = $self->_get_number('height');
+
+ my $graph_width = $self->_get_number('graph_width');
+ my $graph_height = $self->_get_number('graph_height');
+
+
+ my $graph_box = $self->_get_graph_box();
+ my $bottom = $graph_box->[1] + 1;
+ my $left = $graph_box->[0];
+
+ my $zero_position = int($left + (-1*$min_value / $value_range) * ($graph_width-1));
+
+ my $bar_height = int($graph_height / $column_count - 1);
+
+ my $outline_color;
+ if ($style->{'features'}{'outline'}) {
+ $outline_color = $self->_get_color('outline.line');
+ }
+
+ my $series_counter = $self->_get_series_counter() || 0;
+ my $col_series = $self->_get_data_series()->{'bar'};
+ my $column_padding = $self->_get_number('column_padding') || 0;
+
+ # This tracks the series we're in relative to the starting series - this way colors stay accurate, but the columns don't start out too far to the right.
+ my $column_series = 0;
+
+ for (my $series_pos = 0; $series_pos < scalar @$col_series; $series_pos++) {
+ my $series = $col_series->[$series_pos];
+ my @data = @{$series->{'data'}};
+ my $data_size = scalar @data;
+ my $color = $self->_data_color($series_counter);
+ for (my $i = 0; $i < $data_size; $i++) {
+
+ my $y1 = int($bottom + $bar_height * (scalar @$col_series * $i + $series_pos)) + scalar @$col_series * $i + $series_pos + ($column_padding / 2);
+
+ my $y2 = $y1 + $bar_height - $column_padding;
+
+ my $x1 = int($left - ($min_value - $data[$i]) / $value_range * $graph_width);
+
+ my $color = $self->_data_color($series_counter);
+
+ # my @fill = $self->_data_fill($series_counter, [$x1, $y1, $x2, $zero_position]);
+ if ($data[$i] > 0) {
+ $img->box(xmax => $x1, xmin => $zero_position+1, ymin => $y1, ymax => $y2, color => $color, filled => 1);
+ if ($style->{'features'}{'outline'}) {
+ $img->box(xmax => $x1, xmin => $zero_position, ymin => $y1, ymax => $y2, color => $outline_color);
+ }
+ }
+ elsif ($data[$i] == 0) {
+ }
+ else {
+ $img->box(xmax => $zero_position , xmin => $x1, ymin => $y1, ymax => $y2, color => $color, filled => 1);
+ if ($style->{'features'}{'outline'}) {
+ $img->box(xmax => $zero_position, xmin => $x1, ymin => $y1, ymax => $y2, color => $outline_color);
+ }
+ }
+ }
+
+ $series_counter++;
+ $column_series++;
+ }
+ $self->_set_series_counter($series_counter);
+ return;
+}
+
+sub _add_data_series {
+ my $self = shift;
+ my $series_type = shift;
+ my $data_ref = shift;
+ my $series_name = shift;
+
+ my $graph_data = $self->{'graph_data'} || {};
+
+ my $series = $graph_data->{$series_type} || [];
+
+ push @$series, { data => $data_ref, series_name => $series_name };
+
+ $graph_data->{$series_type} = $series;
+
+ $self->{'graph_data'} = $graph_data;
+ return;
+}
+
+=over
+
+=item show_vertical_gridlines()
+
+Shows vertical gridlines at the y-tics.
+
+=cut
+
+sub show_vertical_gridlines {
+ $_[0]->{'custom_style'}->{'vertical_gridlines'} = 1;
+}
+
+=item use_automatic_axis()
+
+Automatically scale the Y axis, based on L<Chart::Math::Axis>. If Chart::Math::Axis isn't installed, this sets an error and returns undef. Returns 1 if it is installed.
+
+=cut
+
+sub use_automatic_axis {
+ eval { require Chart::Math::Axis; };
+ if ($@) {
+ return $_[0]->_error("use_automatic_axis - $@\nCalled from ".join(' ', caller)."\n");
+ }
+ $_[0]->{'custom_style'}->{'automatic_axis'} = 1;
+ return 1;
+}
+
+
+=item set_x_tics($count)
+
+Set the number of X tics to use. Their value and position will be determined by the data range.
+
+=cut
+
+sub set_x_tics {
+ $_[0]->{'x_tics'} = $_[1];
+}
+
+sub _get_x_tics {
+ return $_[0]->{'x_tics'} || 0;
+}
+
+sub _remove_tics_from_chart_box {
+ my $self = shift;
+ my $chart_box = shift;
+
+ # XXX - bad default
+ my $tic_width = $self->_get_y_tic_width() || 10;
+ my @y_tic_box = ($chart_box->[0], $chart_box->[1], $chart_box->[0] + $tic_width, $chart_box->[3]);
+
+ # XXX - bad default
+ my $tic_height = $self->_get_x_tic_height() || 10;
+ my @x_tic_box = ($chart_box->[0], $chart_box->[3] - $tic_height, $chart_box->[2], $chart_box->[3]);
+
+ $self->_remove_box($chart_box, \@y_tic_box);
+ $self->_remove_box($chart_box, \@x_tic_box);
+
+ # If there's no title, the y-tics will be part off-screen. Half of the x-tic height should be more than sufficient.
+ my @y_tic_tops = ($chart_box->[0], $chart_box->[1], $chart_box->[2], $chart_box->[1] + int($tic_height / 2));
+ $self->_remove_box($chart_box, \@y_tic_tops);
+
+}
+
+sub _get_y_tic_width {
+ my $self = shift;
+
+ my $labels = $self->_get_labels();
+ my $max_width = 0;
+ foreach my $label (@$labels) {
+ my @box = $self->_text_bbox($label, 'legend');
+ my $width = $box[2] + 5;
+ # For the tic itself...
+ $width += 10;
+ if ($width > $max_width) {
+ $max_width = $width;
+ }
+ }
+ return $max_width;
+}
+
+sub _get_x_tic_height {
+ my $self = shift;
+
+ my $min = $self->_get_min_value();
+ my $max = $self->_get_max_value();
+ my $tic_count = $self->_get_x_tics();
+
+ my $interval = ($max - $min) / ($tic_count - 1);
+
+ my %text_info = $self->_text_style('legend')
+ or return;
+
+ my $max_height = 0;
+ for my $count (0 .. $tic_count - 1) {
+ my $value = sprintf("%.2f", ($count*$interval)+$min);
+
+ my @box = $self->_text_bbox($value, 'legend');
+ my $height = $box[3] - $box[1];
+
+ # For the tic width
+ $height += 10;
+ if ($height > $max_height) {
+ $max_height = $height;
+ }
+ }
+
+
+ return $max_height;
+}
+
+sub _draw_y_tics {
+ my $self = shift;
+
+ my $img = $self->_get_image();
+ my $graph_box = $self->_get_graph_box();
+ my $image_box = $self->_get_image_box();
+
+ my $labels = $self->_get_labels();
+
+ my $tic_count = (scalar @$labels) - 1;
+
+ my $has_columns = defined $self->_get_data_series()->{'bar'};
+
+ # If we have columns, we want the x-ticks to show up in the middle of the column, not on the left edge
+ my $denominator = $tic_count;
+ if ($has_columns) {
+ $denominator ++;
+ }
+ my $tic_distance = ($graph_box->[3] - $graph_box->[1]) / ($denominator);
+ my %text_info = $self->_text_style('legend')
+ or return;
+
+ for my $count (0 .. $tic_count) {
+ my $label = $labels->[$count];
+
+ my $x1 = $graph_box->[0] - 5;
+ my $x2 = $graph_box->[0] + 5;
+
+ my $y1 = $graph_box->[1] + ($tic_distance * $count);
+
+ if ($has_columns) {
+ $y1 += $tic_distance / 2;
+ }
+
+ $img->line(x1 => $x1, x2 => $x2, y1 => $y1, y2 => $y1, aa => 1, color => '000000');
+
+ my @box = $self->_text_bbox($label, 'legend')
+ or return;
+
+ my $width = $box[2];
+ my $height = $box[3];
+
+ $img->string(%text_info,
+ x => ($x1 - ($width + 5)),
+ y => ($y1 + ($height / 2)),
+ text => $label
+ );
+
+ }
+
+}
+
+sub _draw_x_tics {
+ my $self = shift;
+
+ my $img = $self->_get_image();
+ my $graph_box = $self->_get_graph_box();
+ my $image_box = $self->_get_image_box();
+
+ my $tic_count = $self->_get_x_tics();
+ my $min = $self->_get_min_value();
+ my $max = $self->_get_max_value();
+ my $interval = ($max - $min) / ($tic_count - 1);
+
+ # If we have columns, we want the x-ticks to show up in the middle of the column, not on the left edge
+ my $tic_distance = ($graph_box->[2] - $graph_box->[0]) / ($tic_count -1);
+
+ my %text_info = $self->_text_style('legend')
+ or return;
+
+ my $show_gridlines = $self->_get_number('vertical_gridlines');
+ for my $count (0 .. $tic_count-1) {
+ my $x1 = $graph_box->[0] + ($tic_distance * $count);
+
+ my $y1 = $graph_box->[3] + 5;
+ my $y2 = $graph_box->[3] - 5;
+
+ my $value = ($count*$interval)+$min;
+
+ $img->line(x1 => $x1, x2 => $x1, y1 => $y1, y2 => $y2, aa => 1, color => '000000');
+
+ my @box = $self->_text_bbox($value, 'legend')
+ or return;
+
+ my $width = $box[2];
+ my $height = $box[3];
+
+ $img->string(%text_info,
+ x => ($x1 - ($width / 2)),
+ y => ($y1 + $height + 5),
+ text => $value
+ );
+
+ if ($show_gridlines) {
+ # XXX - line styles!
+ for (my $i = $graph_box->[1]; $i < $graph_box->[3]; $i += 6) {
+ my $y1 = $i;
+ my $y2 = $i + 2;
+ if ($y2 > $graph_box->[3]) { $y2 = $graph_box->[3]; }
+ $img->line(x1 => $x1, x2 => $x1, y1 => $y1, y2 => $y2, aa => 1, color => '000000');
+ }
+ }
+ }
+}
+
+sub _valid_input {
+ my $self = shift;
+
+ if (!defined $self->_get_data_series() || !keys %{$self->_get_data_series()}) {
+ return $self->_error("No data supplied");
+ }
+
+ my $data = $self->_get_data_series();
+ if (defined $data->{'line'} && !scalar @{$data->{'line'}->[0]->{'data'}}) {
+ return $self->_error("No values in data series");
+ }
+ if (defined $data->{'column'} && !scalar @{$data->{'column'}->[0]->{'data'}}) {
+ return $self->_error("No values in data series");
+ }
+ if (defined $data->{'stacked_column'} && !scalar @{$data->{'stacked_column'}->[0]->{'data'}}) {
+ return $self->_error("No values in data series");
+ }
+
+ return 1;
+}
+
+sub _set_column_count { $_[0]->{'column_count'} = $_[1]; }
+sub _set_min_value { $_[0]->{'min_value'} = $_[1]; }
+sub _set_max_value { $_[0]->{'max_value'} = $_[1]; }
+sub _set_image_box { $_[0]->{'image_box'} = $_[1]; }
+sub _set_graph_box { $_[0]->{'graph_box'} = $_[1]; }
+sub _set_series_counter { $_[0]->{'series_counter'} = $_[1]; }
+sub _get_column_count { return $_[0]->{'column_count'} }
+sub _get_min_value { return $_[0]->{'min_value'} }
+sub _get_max_value { return $_[0]->{'max_value'} }
+sub _get_image_box { return $_[0]->{'image_box'} }
+sub _get_graph_box { return $_[0]->{'graph_box'} }
+sub _get_series_counter { return $_[0]->{'series_counter'} }
+
+1;
+
projects / imager-graph.git / commitdiff