/usr/lib/perl5/SDL/Color.pm is in libsdl-perl 2.2.5-1build2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 | #!/usr/bin/env perl
#
# Color.pm
#
# Copyright (C) 2005 David J. Goehrig <dgoehrig@cpan.org>
#
# ------------------------------------------------------------------------------
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
#
# ------------------------------------------------------------------------------
#
# Please feel free to send questions, suggestions or improvements to:
#
# David J. Goehrig
# dgoehrig@cpan.org
#
package SDL::Color;
use strict;
use warnings;
use Carp;
use SDL;
sub new {
my $proto = shift;
my $class = ref($proto) || $proto;
return bless \SDL::NewColor(@_), $class if (@_ == 3);
my $self;
my (%options) = @_;
verify (%options, qw/ -color -surface -pixel -r -g -b /) if $SDL::DEBUG;
if ($options{-color}) {
$self = \$options{-color};
} elsif ($options{-pixel} && $options{-surface}) {
croak "SDL::Color::new requires an SDL::Surface"
unless !$SDL::DEBUG || $options{-surface}->isa("SDL::Surface");
$self = \SDL::NewColor(SDL::GetRGB(${$options{-surface}}, $options{-pixel}));
} else {
my @color;
push @color, $options{-red} || $options{-r} || 0;
push @color, $options{-green} || $options{-g} || 0;
push @color, $options{-blue} || $options{-b} || 0;
$self = \SDL::NewColor(@color);
}
croak "Could not create color, ", SDL::GetError(), "\n"
unless ($$self);
bless $self,$class;
return $self;
}
sub DESTROY {
SDL::FreeColor(${$_[0]});
}
sub r {
my $self = shift;
SDL::ColorR($$self,@_);
}
sub g {
my $self = shift;
SDL::ColorG($$self,@_);
}
sub b {
my $self = shift;
SDL::ColorB($$self,@_);
}
sub rgb {
my $self = shift;
SDL::ColorRGB($$self,@_);
}
sub pixel {
croak "SDL::Color::pixel requires an SDL::Surface"
unless !$SDL::DEBUG || $_[1]->isa("SDL::Surface");
SDL::MapRGB(${$_[1]},$_[0]->r(),$_[0]->g(),$_[0]->b());
}
$SDL::Color::black = new SDL::Color -r => 0, -g => 0, -b => 0;
$SDL::Color::white = new SDL::Color -r => 255, -g => 255, -b => 255;
$SDL::Color::red = new SDL::Color -r => 255, -g => 0, -b => 0;
$SDL::Color::blue = new SDL::Color -r => 0, -g => 0, -b => 255;
$SDL::Color::green = new SDL::Color -r => 0, -g => 255, -b => 0;
$SDL::Color::purple = new SDL::Color -r => 255, -g => 0, -b => 255;
$SDL::Color::yellow = new SDL::Color -r => 255, -g => 255, -b => 0;
1;
__END__;
=pod
=head1 NAME
SDL::Color - a SDL perl extension
=head1 SYNOPSIS
$color = new SDL::Color ( -r => 0xde, -g => 0xad, -b =>c0 );
$color = new SDL::Color -surface => $app, -pixel => $app->pixel($x,$y);
$color = new SDL::Color -color => SDL::NewColor(0xff,0xaa,0xdd);
=head1 DESCRIPTION
C<SDL::Color> is a wrapper for display format independent color
representations, with the same interface as L<SDL::Color>.
=head2 new ( -color => )
C<SDL::Color::new> with a C<-color> option will construct a new object
referencing the passed SDL_Color*.
=head2 new (-r => , -g => , -b => )
C<SDL::Color::new> with C<-r,-g,-b> options will construct both a SDL_Color
structure, and the associated object with the specified vales.
=head2 new (-pixel =>, -surface =>)
C<SDL::Color::new> with C<-pixel,-surface> options will generate a SDL_Color*
with the r,g,b values associated with the integer value passed by C<-pixel>
for the given C<-surface>'s format.
=head2 r ( [ red ] ), g( [ green ] ), b( [ blue ] )
C<SDL::Color::r, SDL::Color::g, SDL::Color::b> are accessor methods for
the red, green, and blue components respectively. The color value can be set
by passing a byte value (0-255) to each function.
=head2 pixel ( surface )
C<SDL::Color::pixel> takes a C<SDL::Surface> object and r,g,b values, and
returns the integer representation of the closest color for the given surface.
=head1 AUTHOR
David J. Goehrig
=head1 SEE ALSO
L<perl> L<SDL::Surface>
=cut
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