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package wxPerl::Styles; |
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$VERSION = eval{require version}?version::qv($_):$_ for(0.0.1); |
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use warnings; |
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use strict; |
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use Carp; |
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# hmm, might as well depend on it, though caller probably does already |
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use Wx (); |
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# or do this at runtime: |
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# croak("you need to require Wx first") unless(Wx->VERSION); |
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=head1 NAME |
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wxPerl::Styles - shortcuts for wxFOO style constants |
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=head1 SYNOPSIS |
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This package encapsulates stringwise access to wxPerl constants, |
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primarily for use in specifying styles, but also for comparing |
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constants. |
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use Wx qw( |
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ALIGN_RIGHT |
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); |
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... wxALIGN_RIGHT ... ; |
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Becomes: |
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use Wx (); |
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use wxPerl::Styles 'wxVal'; |
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... wxVal('align_right') ... ; |
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Names will be uppercased automatically. |
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When using wxPerl::Constructors, style is always a named parameter, so |
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this gives you the 'style => ...' bit: |
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use Wx (); |
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use wxPerl::Constructors; |
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use wxPerl::Styles 'style'; |
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... |
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my $text_ctrl = wxPerl::TextCtrl->new($self, 'some text here', |
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style('hscroll', te => 'process_enter|multiline') |
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); |
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=head1 NOTE |
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This does delay typo errors until run-time, but widget-construction is |
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pretty close to compile time, and the error messages are likely to be |
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more informative than 'syntax error'. Also, I think that's a small |
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price to pay for not having all of those extra methods kicking around in |
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your class. |
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=cut |
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BEGIN { |
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require Exporter; |
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*{import} = \&Exporter::import; |
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our @EXPORT_OK = qw( |
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style |
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wxVal |
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ID |
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); |
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} |
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=head2 wxVal |
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my $style = wxVal('align_right', |
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te => 'PROCESS_ENTER|MULTILINE' |
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); |
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=cut |
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sub wxVal { |
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my $bare; |
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if(@_ % 2) { |
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$bare = shift(@_); |
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} |
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my (%args) = @_; |
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my $val = defined($bare) ? _mk_constant('', $bare) : 0; |
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foreach my $key (keys(%args)) { |
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$val |= _mk_constant(uc($key) . '_', $args{$key}); |
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} |
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return($val); |
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} # end subroutine wxVal definition |
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######################################################################## |
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=head2 style |
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Same as wxVal(), but returns (style => $style) for use with |
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wxPerl::Constructors named parameter lists. |
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my %param = style(@list); |
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=cut |
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sub style { |
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return(style => wxVal(@_)); |
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} # end subroutine style definition |
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######################################################################## |
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=head2 ID |
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Hash-parameter shortcut for 'id => Wx::wxID_OK()' and etc. |
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my %param = ID('ok'); |
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=cut |
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sub ID ($) { |
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my ($val, @and) = @_; |
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@and and croak("too many arguments for ID"); |
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return(id => wxVal(id => $val)); |
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} # end subroutine ID definition |
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######################################################################## |
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=head2 _mk_constant |
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my $const = _mk_constant($prefix, $string); |
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=cut |
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sub _mk_constant { |
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my ($p, $string) = @_; |
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my $val = 0; |
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foreach my $part (split(/\|/, uc($string))) { |
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$val |= _get_constant($p . $part); |
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} |
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return($val); |
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} # end subroutine _mk_constant definition |
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######################################################################## |
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=head2 _get_constant |
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Expects a fully qualified subname such as 'Wx::wxALIGN_RIGHT'. |
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my $const = _get_constant($name); |
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=cut |
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my %cache; |
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sub _get_constant { |
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my ($name) = @_; |
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exists($cache{$name}) and return($cache{$name}); |
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$name =~ m/^[A-Z][0-9A-Z_]+$/ or croak("invalid constant '$name'"); |
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my $v = eval("Wx::wx$name()"); |
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$@ and croak("no such constant: '$name'"); |
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return($cache{$name} = $v); |
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} # end subroutine _get_constant definition |
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######################################################################## |
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=head1 AUTHOR |
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Eric Wilhelm @ |
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http://scratchcomputing.com/ |
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164
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=head1 BUGS |
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166
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If you found this module on CPAN, please report any bugs or feature |
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requests through the web interface at L. I will be |
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notified, and then you'll automatically be notified of progress on your |
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bug as I make changes. |
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If you pulled this development version from my /svn/, please contact me |
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directly. |
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=head1 COPYRIGHT |
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Copyright (C) 2007 Eric L. Wilhelm, All Rights Reserved. |
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=head1 NO WARRANTY |
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Absolutely, positively NO WARRANTY, neither express or implied, is |
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offered with this software. You use this software at your own risk. In |
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case of loss, no person or entity owes you anything whatsoever. You |
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have been warned. |
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185
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=head1 LICENSE |
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This program is free software; you can redistribute it and/or modify it |
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under the same terms as Perl itself. |
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=cut |
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# vi:ts=2:sw=2:et:sta |
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1; |