+++ /dev/null
-package Font::TTF::GrFeat;
-
-=head1 NAME
-
-Font::TTF::GrFeat - Graphite Font Features
-
-=head1 DESCRIPTION
-
-=head1 INSTANCE VARIABLES
-
-=over 4
-
-=item version
-
-=item features
-
-An array of hashes of the following form
-
-=over 8
-
-=item feature
-
-feature id number
-
-=item name
-
-name index in name table
-
-=item exclusive
-
-exclusive flag
-
-=item default
-
-the default setting number
-
-=item settings
-
-hash of setting number against name string index
-
-=back
-
-=back
-
-=head1 METHODS
-
-=cut
-
-use strict;
-use vars qw(@ISA);
-
-use Font::TTF::Utils;
-
-require Font::TTF::Table;
-
-@ISA = qw(Font::TTF::Table);
-
-=head2 $t->read
-
-Reads the features from the TTF file into memory
-
-=cut
-
-sub read
-{
- my ($self) = @_;
- my ($featureCount, $features);
-
- return $self if $self->{' read'};
- $self->SUPER::read_dat or return $self;
-
- ($self->{'version'}, $featureCount) = TTF_Unpack("vS", $self->{' dat'});
-
- $features = [];
- foreach (1 .. $featureCount) {
- my ($feature, $nSettings, $settingTable, $featureFlags, $nameIndex, $reserved);
- if ($self->{'version'} == 1)
- {
- ($feature, $nSettings, $settingTable, $featureFlags, $nameIndex)
- = TTF_Unpack("SSLSS", substr($self->{' dat'}, $_ * 12, 12));
- #The version 1 Feat table ends with a feature (id 1) named NoName
- #with zero settings but with an offset to the last entry in the setting
- #array. This last setting has id 0 and an invalid name id. This last
- #feature is changed to have one setting.
- if ($_ == $featureCount && $nSettings == 0) {$nSettings = 1;}
- }
- else #version == 2
- {($feature, $nSettings, $reserved, $settingTable, $featureFlags, $nameIndex)
- = TTF_Unpack("LSSLSS", substr($self->{' dat'}, 12 + ($_ - 1) * 16, 16))};
- my $feature =
- {
- 'feature' => $feature,
- 'name' => $nameIndex,
- };
-
- #interpret the featureFlags & store settings
- $feature->{'exclusive'} = (($featureFlags & 0x8000) != 0);
-
- my @settings = TTF_Unpack("S*", substr($self->{' dat'}, $settingTable, $nSettings * 4));
- if ($featureFlags & 0x4000)
- {$feature->{'default'} = $featureFlags & 0x00FF;}
- else
- {$feature->{'default'} = @settings[0];}
- $feature->{'settings'} = {@settings};
-
- push(@$features, $feature);
- }
-
- $self->{'features'} = $features;
-
- delete $self->{' dat'}; # no longer needed, and may become obsolete
- $self->{' read'} = 1;
- $self;
-}
-
-=head2 $t->out($fh)
-
-Writes the features to a TTF file
-
-=cut
-
-sub out
-{
- my ($self, $fh) = @_;
- my ($features, $numFeatures, $settings, $featureFlags, $featuresData, $settingsData);
-
- return $self->SUPER::out($fh) unless $self->{' read'};
-
- $features = $self->{'features'};
- $numFeatures = @$features;
- $featuresData, $settingsData = ('', '');
-
- foreach (@$features) {
- $settings = $_->{'settings'};
- $featureFlags = ($_->{'exclusive'} ? 0x8000 : 0x0000);
-
-# output default setting first instead of using the featureFlags (as done below)
-# $featureFlags = ($_->{'exclusive'} ? 0x8000 : 0x0000) |
-# ($_->{'default'} != 0 ? 0x4000 | ($_->{'default'} & 0x00FF)
-# : 0x0000);
- if ($self->{'version'} == 1)
- {
- $featuresData .= TTF_Pack("SSLSS",
- $_->{'feature'},
- scalar keys %$settings,
- 12 + 12 * $numFeatures + length $settingsData,
- $featureFlags,
- $_->{'name'});
- }
- else #version == 2
- {
- $featuresData .= TTF_Pack("LSSLSS",
- $_->{'feature'},
- scalar keys %$settings,
- 0,
- 12 + 16 * $numFeatures + length $settingsData,
- $featureFlags,
- $_->{'name'});
- }
-
- #output default setting first
- #the settings may not be in their original order
- my $defaultSetting = $_->{'default'};
- $settingsData .= TTF_Pack("SS", $defaultSetting, $settings->{$defaultSetting});
- foreach (sort {$a <=> $b} keys %$settings) {
- if ($_ == $defaultSetting) {next;} #skip default setting
- $settingsData .= TTF_Pack("SS", $_, $settings->{$_});
- }
- }
-
- $fh->print(TTF_Pack("vSSL", $self->{'version'}, $numFeatures, 0, 0));
- $fh->print($featuresData);
- $fh->print($settingsData);
-
- $self;
-}
-
-=head2 $t->print($fh)
-
-Prints a human-readable representation of the table
-
-=cut
-
-sub print
-{
- my ($self, $fh) = @_;
- my ($names, $features, $settings);
-
- $self->read;
-
- $names = $self->{' PARENT'}->{'name'};
- $names->read;
-
- $fh = 'STDOUT' unless defined $fh;
-
- $features = $self->{'features'};
- foreach (@$features) {
- $fh->printf("Feature %d, %s, default: %d name %d # '%s'\n",
- $_->{'feature'},
- ($_->{'exclusive'} ? "exclusive" : "additive"),
- $_->{'default'},
- $_->{'name'},
- $names->{'strings'}[$_->{'name'}][3][1]{1033});
- $settings = $_->{'settings'};
- foreach (sort { $a <=> $b } keys %$settings) {
- $fh->printf("\tSetting %d, name %d # '%s'\n",
- $_, $settings->{$_}, $names->{'strings'}[$settings->{$_}][3][1]{1033});
- }
- }
-
- $self;
-}
-
-sub settingName
-{
- my ($self, $feature, $setting) = @_;
-
- $self->read;
-
- my $names = $self->{' PARENT'}->{'name'};
- $names->read;
-
- my $features = $self->{'features'};
- my ($featureEntry) = grep { $_->{'feature'} == $feature } @$features;
- my $featureName = $names->{'strings'}[$featureEntry->{'name'}][3][1]{1033};
- my $settingName = $featureEntry->{'exclusive'}
- ? $names->{'strings'}[$featureEntry->{'settings'}->{$setting}][3][1]{1033}
- : $names->{'strings'}[$featureEntry->{'settings'}->{$setting & ~1}][3][1]{1033}
- . (($setting & 1) == 0 ? " On" : " Off");
-
- ($featureName, $settingName);
-}
-
-1;
-
-=head1 BUGS
-
-The version 1 Feat table ends with a feature (id 1) named NoName
-with zero settings but with an offset to the last entry in the setting
-array. This last setting has id 0 and an invalid name id. This last
-feature is changed to have one setting.
-
-=head1 AUTHOR
-
-Alan Ward (derived from Jonathan Kew's Feat.pm).
-See L<Font::TTF::Font> for copyright and licensing.
-
-=cut
-
fnp / librarian.git / blobdiff