package Shiar_Sheet::Keyboard; use strict; use warnings; no warnings 'uninitialized'; # save some useless checks for more legible code use Carp; our $VERSION = '1.02'; my @casedesc = (undef, qw/shift ctrl meta/, 'shift meta'); my @rowdesc = qw(numeric top home bottom); my %keyrows = do 'keys.inc.pl'; # add first two cases of each row again with each char prepended by + (alt) push @$_, map { [map {"+$_"} @$_] } @$_[0,1] for map {@$_} values %keyrows; my %keytrans = qw( ^@ NUL ^a SOH ^b STX ^c ETX ^d EOT ^e ENQ ^f ACK ^g BEL ^h BS ^i tab ^j LF ^k VT ^l FF ^m CR ^n SO ^o SI ^p DLE ^q DC1 ^r DC2 ^s DC3 ^t DC4 ^u NAK ^v SYN ^w ETB ^x CAN ^y EM ^z SUB ^[ ESC ^\ FS ^] GS ^^ RS ^_ US ^? DEL ); sub new { my $self = shift; my ($keys) = @_; croak 'Invalid key table specified' unless ref $keys eq 'HASH'; my $parent = (caller)[0]; # calling module my $sign = do { no strict 'refs'; # temporarily allow variable references \%{ $parent.'::sign' }; # return %sign from parent }; croak "%${parent}::sign not found" unless %$sign; bless {sign => $sign, keys => $keys, map => 'qwerty'}, $self; } sub map { my $self = shift; my ($mapname) = @_; return $self->{map} = $mapname if defined $keyrows{$mapname}; return undef; } sub escapeclass { local $_ = shift; s/\^/_c/g; s/\+/_m/g; s/\[/_sbo/g; s/\]/_sbc/g; s/^$/_/; return $_; } sub escapehtml { local $_ = shift; s/</g; s/>/>/g; s/ / /g; return $_; } sub keyunalias { my $self = shift; my ($key, $ancestry) = @_; $key =~ s/(\S*?)(\+?\^?\S)($|\s.*)/$2/; my $mode = $1; my $keyinfo = $self->{keys}->{$mode}->{$key}; return [] unless defined $keyinfo; return $keyinfo if ref $keyinfo; return if $ancestry->{$key}++; # endless loop failsafe return $self->keyunalias($keyinfo, $ancestry); } sub print_key { my $self = shift; my ($mode, $key, $keyinfo) = @_; $keyinfo = [ $self->{sign}->{alias}.$keyinfo, $self->keyunalias($keyinfo)->[1] . ' alias' ] if defined $keyinfo and not ref $keyinfo; # alias my ($desc, $flags, $mnem) = @$keyinfo if defined $keyinfo; defined $desc or $flags = $key eq '^0' ? 'ni' : 'no'; # $key = $keytrans{$key} if defined $keytrans{$key}; my $keytxt = $mode . escapehtml($key) if $key ne '^0'; $keytxt .= $self->{sign}->{$1} while $flags =~ s/(?:^| )(arg[a-ln-z]?)\b//; # arguments $keytxt .= "$self->{sign}->{motion}" if $flags =~ s/ ?\bargm\b//; # motion argument $keytxt =~ s{\^(?=.)}{^}; # element around ctrl-identifier my $onclick = $flags =~ s/ ?\bmode(\S*)// && defined $self->{keys}{$1} && sprintf( ' onclick="setmode(%s)"', $1 eq '' ? '' : sprintf(q{'mode%s'}, escapeclass($1)) ); $onclick .= sprintf(q{ onclick="document.location='%s'"}, $1) if $flags =~ s/ ?\blink(\S*)//; my $keyhint = defined($mnem) && qq{ title="$mnem"}; print qq{\t\t