+
+my $font = $RT::ChartFont || ['verdana', 'arial', gdMediumBoldFont];
+$chart->set_title_font( $font, 12 ) if $chart->can('set_title_font');
+$chart->set_legend_font( $font, 12 ) if $chart->can('set_legend_font');
+$chart->set_x_label_font( $font, 10 ) if $chart->can('set_x_label_font');
+$chart->set_y_label_font( $font, 10 ) if $chart->can('set_y_label_font');
+$chart->set_label_font( $font, 10 ) if $chart->can('set_label_font');
+$chart->set_x_axis_font( $font, 9 ) if $chart->can('set_x_axis_font');
+$chart->set_y_axis_font( $font, 9 ) if $chart->can('set_y_axis_font');
+$chart->set_values_font( $font, 9 ) if $chart->can('set_values_font');
+$chart->set_value_font( $font, 9 ) if $chart->can('set_value_font');
+
+# Pie charts don't like having no input, so we show a special image
+# that indicates an error message. Because this is used in an <img>
+# context, it can't be a simple error message. Without this check,
+# the chart will just be a non-loading image.
+if ($tix->Count == 0) {
+ my $plot = GD::Image->new(600 => 400);
+ $plot->colorAllocate(255, 255, 255); # background
+ my $black = $plot->colorAllocate(0, 0, 0);
+
+ require GD::Text::Wrap;
+ my $error = GD::Text::Wrap->new($plot,
+ color => $black,
+ text => loc("No tickets found."),
+ );
+ $error->set_font( $font, 12 );
+ $error->draw(0, 0);
+
+ $m->comp( 'SELF:Plot', plot => $plot, %ARGS );
+}
+