# Copyright 2008, 2009, 2013 Kevin Ryde
# This file is part of Chart.
#
# Chart is free software; you can redistribute it and/or modify it under the
# terms of the GNU General Public License as published by the Free Software
# Foundation; either version 3, or (at your option) any later version.
#
# Chart is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
# details.
#
# You should have received a copy of the GNU General Public License along
# with Chart. If not, see <http://www.gnu.org/licenses/>.
package App::Chart::Series::Indicator;
use 5.010;
use strict;
use warnings;
use List::Util qw(min max);
use Locale::TextDomain ('App-Chart');
use base 'App::Chart::Series';
use constant DEBUG => 0;
use constant decimals => 0; # none needed normally
sub name {
my ($self) = @_;
my $name = $self->shortname;
if (my $parameters = $self->{'parameters'}) {
my $parameter_info = $self->parameter_info;
my @parameters;
foreach my $i (0 .. $#$parameters) {
my $pinfo = $parameter_info->[$i];
if ($pinfo->{'type'} eq 'boolean') {
$parameters[$i] = ($parameters->[$i] ? $pinfo->{'name'} : '');
} elsif ($pinfo->{'type'} eq 'float') {
# display just 1 decimal is that's enough
my $nf = App::Chart::number_formatter();
my $value = $parameters->[$i];
my $percent = $pinfo->{'type_hint'}//'' eq 'percent';
my $decimals = max ($pinfo->{'decimals'} // 0,
App::Chart::count_decimals($value));
$parameters[$i] = $nf->format_number ($value, $decimals, 1);
if ($percent) {
$parameters[$i] .= '%';
}
} else {
$parameters[$i] = $parameters->[$i];
}
}
$parameters = join (__p('separator',',') . ' ', @parameters);
$name = join (' ', $name, $parameters);
}
my $parent_name = $self->parent->name;
if (defined $parent_name) {
$name = join (' - ', $parent_name, $name);
}
return $name;
}
sub fill_part_from_proc {
my ($self, $lo, $hi) = @_;
if (DEBUG) { say "fill_part_from_proc $lo $hi,",
" self=$self parent=$self->{'parent'}"; }
my $parent = $self->{'parent'};
my $warmup_count = $self->warmup_count_for_position ($lo);
my $start = $parent->find_before ($lo, $warmup_count);
$parent->fill ($lo, $hi);
my $p = $parent->values_array;
my $s = $self->values_array;
$hi = min ($hi, $#$p);
if ($#$s < $hi) { $#$s = $hi; } # pre-extend
my $proc = $self->proc (@{$self->{'parameters'}});
if (DEBUG) { print " start $start\n"; }
foreach my $i ($start .. $lo-1) {
my $value = $p->[$i] // next;
$proc->($value);
}
foreach my $i ($lo .. $hi) {
my $value = $p->[$i] // next;
$s->[$i] = $proc->($value);
}
}
sub warmup_count_for_position {
my ($self, $lo) = @_;
return $self->warmup_count (@{$self->{'parameters'}});
}
1;
__END__