-#!/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;
+require Exporter;
+require DynaLoader;
+our @ISA = qw(Exporter DynaLoader);
+bootstrap SDL::Color;
1;
-__END__;
+__END__
=pod
=head1 NAME
-SDL::Color - a SDL perl extension
+SDL::Color - Format independent color description
=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);
+ my $black = SDL::Color->new( 0, 0, 0);
+ my $color = SDL::Color->new(255, 0, 0);
+ my $r = $color->r; # 255
+ my $g = $color->g; # 0
+ my $b = $color->b; # 0
+ $color->g(255);
+ $color->b(255);
+ # $color is now white
=head1 DESCRIPTION
-C<SDL::Color> is a wrapper for display format independent color
-representations, with the same interface as L<SDL::Color>.
+C<SDL_Color> describes a color in a format independent way.
+
+=head1 METHODS
-=head2 new ( -color => )
+=head2 new ( $r, $g, $b )
-C<SDL::Color::new> with a C<-color> option will construct a new object
-referencing the passed SDL_Color*.
+The constructor creates a new color with the specified red, green and
+blue values:
-=head2 new (-r => , -g => , -b => )
+ my $color = SDL::Color->new(255, 0, 0);
-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 r
-=head2 new (-pixel =>, -surface =>)
+If passed a value, this method sets the red component of the color;
+if not, it returns the red component of the color:
-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.
+ my $r = $color->r; # 255
+ $color->r(128);
-=head2 r ( [ red ] ), g( [ green ] ), b( [ blue ] )
+=head2 g
-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.
+If passed a value, this method sets the green component of the color;
+if not, it returns the green component of the color:
-=head2 pixel ( surface )
+ my $g = $color->g; # 255
+ $color->g(128);
-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.
+=head2 b
-=head1 AUTHOR
+If passed a value, this method sets the blue component of the color;
+if not, it returns the blue component of the color:
-David J. Goehrig
+ my $b = $color->b; # 255
+ $color->b(128);
=head1 SEE ALSO
-L<perl> L<SDL::Surface>
+L<SDL::Surface>
=cut
projects / sdlgit/SDL_perl.git / blobdiff