X-Git-Url: https://git.mdrn.pl/librarian.git/blobdiff_plain/e9aeedc51047d8d5e9e45c5253c776f8994da965..3a0c83394d5783715fab2be29fa1a9cfc3574e28:/src/librarian/font-optimizer/ext/Font-TTF/lib/Font/TTF/Head.pm diff --git a/src/librarian/font-optimizer/ext/Font-TTF/lib/Font/TTF/Head.pm b/src/librarian/font-optimizer/ext/Font-TTF/lib/Font/TTF/Head.pm deleted file mode 100644 index 362e8e4..0000000 --- a/src/librarian/font-optimizer/ext/Font-TTF/lib/Font/TTF/Head.pm +++ /dev/null @@ -1,250 +0,0 @@ -package Font::TTF::Head; - -=head1 NAME - -Font::TTF::Head - The head table for a TTF Font - -=head1 DESCRIPTION - -This is a very basic table with just instance variables as described in the -TTF documentation, using the same names. One of the most commonly used is -C. - -=head1 INSTANCE VARIABLES - -The C table has no internal instance variables beyond those common to all -tables and those specified in the standard: - - version - fontRevision - checkSumAdjustment - magicNumber - flags - unitsPerEm - created - modified - xMin - yMin - xMax - yMax - macStyle - lowestRecPPEM - fontDirectionHint - indexToLocFormat - glyphDataFormat - -The two dates are held as an array of two unsigned longs (32-bits) - -=head1 METHODS - -=cut - -use strict; -use vars qw(@ISA %fields @field_info); - -require Font::TTF::Table; -use Font::TTF::Utils; - -@ISA = qw(Font::TTF::Table); -@field_info = ( - 'version' => 'v', - 'fontRevision' => 'f', - 'checkSumAdjustment' => 'L', - 'magicNumber' => 'L', - 'flags' => 'S', - 'unitsPerEm' => 'S', - 'created' => 'L2', - 'modified' => 'L2', - 'xMin' => 's', - 'yMin' => 's', - 'xMax' => 's', - 'yMax' => 's', - 'macStyle' => 'S', - 'lowestRecPPEM' => 'S', - 'fontDirectionHint' => 's', - 'indexToLocFormat' => 's', - 'glyphDataFormat' => 's'); - -sub init -{ - my ($k, $v, $c, $i); - for ($i = 0; $i < $#field_info; $i += 2) - { - ($k, $v, $c) = TTF_Init_Fields($field_info[$i], $c, $field_info[$i + 1]); - next unless defined $k && $k ne ""; - $fields{$k} = $v; - } -} - - -=head2 $t->read - -Reads the table into memory thanks to some utility functions - -=cut - -sub read -{ - my ($self) = @_; - my ($dat); - - $self->SUPER::read || return $self; - - init unless defined $fields{'Ascender'}; - $self->{' INFILE'}->read($dat, 54); - - TTF_Read_Fields($self, $dat, \%fields); - $self; -} - - -=head2 $t->out($fh) - -Writes the table to a file either from memory or by copying. If in memory -(which is usually) the checkSumAdjustment field is set to 0 as per the default -if the file checksum is not to be considered. - -=cut - -sub out -{ - my ($self, $fh) = @_; - - return $self->SUPER::out($fh) unless $self->{' read'}; # this is never true -# $self->{'checkSumAdjustment'} = 0 unless $self->{' PARENT'}{' wantsig'}; - $fh->print(TTF_Out_Fields($self, \%fields, 54)); - $self; -} - - -=head2 $t->XML_element($context, $depth, $key, $value) - -Handles date process for the XML exporter - -=cut - -sub XML_element -{ - my ($self) = shift; - my ($context, $depth, $key, $value) = @_; - my ($fh) = $context->{'fh'}; - my ($output, @time); - my (@month) = qw(JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC); - - return $self->SUPER::XML_element(@_) unless ($key eq 'created' || $key eq 'modified'); - - @time = gmtime($self->getdate($key eq 'created')); - $output = sprintf("%d/%s/%d %d:%d:%d", $time[3], $month[$time[4]], $time[5] + 1900, - $time[2], $time[1], $time[0]); - $fh->print("$depth<$key>$output\n"); - $self; -} - - -=head2 $t->update - -Updates the head table based on the glyph data and the hmtx table - -=cut - -sub update -{ - my ($self) = @_; - my ($num, $i, $loc, $hmtx); - my ($xMin, $yMin, $xMax, $yMax, $lsbx); - - return undef unless ($self->SUPER::update); - - $num = $self->{' PARENT'}{'maxp'}{'numGlyphs'}; - return undef unless (defined $self->{' PARENT'}{'hmtx'} && defined $self->{' PARENT'}{'loca'}); - $hmtx = $self->{' PARENT'}{'hmtx'}->read; - - $self->{' PARENT'}{'loca'}->update; - $hmtx->update; # if we updated, then the flags will be set anyway. - $lsbx = 1; - for ($i = 0; $i < $num; $i++) - { - $loc = $self->{' PARENT'}{'loca'}{'glyphs'}[$i]; - next unless defined $loc; - $loc->read->update_bbox; - $xMin = $loc->{'xMin'} if ($loc->{'xMin'} < $xMin || $i == 0); - $yMin = $loc->{'yMin'} if ($loc->{'yMin'} < $yMin || $i == 0); - $xMax = $loc->{'xMax'} if ($loc->{'xMax'} > $xMax); - $yMax = $loc->{'yMax'} if ($loc->{'yMax'} > $yMax); - $lsbx &= ($loc->{'xMin'} == $hmtx->{'lsb'}[$i]); - } - $self->{'xMin'} = $xMin; - $self->{'yMin'} = $yMin; - $self->{'xMax'} = $xMax; - $self->{'yMax'} = $yMax; - if ($lsbx) - { $self->{'flags'} |= 2; } - else - { $self->{'flags'} &= ~2; } - $self; -} - - -=head2 $t->getdate($is_create) - -Converts font modification time (or creation time if $is_create is set) to a 32-bit integer as returned -from time(). Returns undef if the value is out of range, either before the epoch or after the maximum -storable time. - -=cut - -sub getdate -{ - my ($self, $is_create) = @_; - my ($arr) = $self->{$is_create ? 'created' : 'modified'}; - - $arr->[1] -= 2082844800; # seconds between 1/Jan/1904 and 1/Jan/1970 (midnight) - if ($arr->[1] < 0) - { - $arr->[1] += 0xFFFFFFF; $arr->[1]++; - $arr->[0]--; - } - return undef if $arr->[0] != 0; - return $arr->[1]; -} - - -=head2 $t->setdate($time, $is_create) - -Sets the time information for modification (or creation time if $is_create is set) according to the 32-bit -time information. - -=cut - -sub setdate -{ - my ($self, $time, $is_create) = @_; - my (@arr); - - $arr[1] = $time; - if ($arr[1] >= 0x83DA4F80) - { - $arr[1] -= 0xFFFFFFFF; - $arr[1]--; - $arr[0]++; - } - $arr[1] += 2082844800; - $self->{$is_create ? 'created' : 'modified'} = \@arr; - $self; -} - - -1; - - -=head1 BUGS - -None known - -=head1 AUTHOR - -Martin Hosken Martin_Hosken@sil.org. See L for copyright and -licensing. - -=cut -