#!/usr/bin/env perl
#
# Palette.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
#
# NB: there is no palette destructor because most of the time the
# palette will be owned by a surface, so any palettes you create
# with new, won't be destroyed until the program ends!
package SDL::Palette;
use strict;
use warnings;
use Carp;
# NB: there is no palette destructor because most of the time the
# palette will be owned by a surface, so any palettes you create
# with new, won't be destroyed until the program ends!
sub new {
my $proto = shift;
my $class = ref($proto) || $proto;
my $image;
my $self;
if (@_) {
$image = shift;
$self = \$image->palette();
} else {
$self = \SDL::NewPalette(256);
}
croak SDL::GetError() unless $$self;
bless $self, $class;
return $self;
}
sub size {
my $self = shift;
return SDL::PaletteNColors($$self);
}
sub color {
my $self = shift;
my $index = shift;
my ($r,$g,$b);
if (@_) {
$r = shift; $g = shift; $b = shift;
return SDL::PaletteColors($$self,$index,$r,$g,$b);
} else {
return SDL::PaletteColors($$self,$index);
}
}
sub red {
my $self = shift;
my $index = shift;
my $c;
if (@_) {
$c = shift;
return SDL::ColorR(
SDL::PaletteColors($$self,$index),$c);
} else {
return SDL::ColorR(
SDL::PaletteColors($$self,$index));
}
}
sub green {
my $self = shift;
my $index = shift;
my $c;
if (@_) {
$c = shift;
return SDL::ColorG(
SDL::PaletteColors($$self,$index),$c);
} else {
return SDL::ColorG(
SDL::PaletteColors($$self,$index));
}
}
sub blue {
my $self = shift;
my $index = shift;
my $c;
if (@_) {
$c = shift;
return SDL::ColorB(
SDL::PaletteColors($$self,$index),$c);
} else {
return SDL::ColorB(
SDL::PaletteColors($$self,$index));
}
}
1;
__END__;
=pod
=head1 NAME
SDL::Palette - a perl extension
=head1 DESCRIPTION
L<SDL::Palette> provides an interface to the SDL_Palette structures,
and can be used to set the color values of an existing palette's indexes.
=head1 METHODS
=head2 blue ( index, [value] )
Fetches and sets the blue component of the color at index.
=head2 green ( index, [value] )
Fetches and sets the green component of the color at index.
=head2 red ( index, [value] )
Fetches and sets the red component of the color at index.
=head2 color ( index, [ r, g, b ] )
Fetches and sets the RGB, returns an SDL_Color *.
=head2 size
Returns the size of the palette.
=head1 AUTHOR
David J. Goehrig
=head1 SEE ALSO
L<perl> L<SDL::Color> L<SDL::Surface>
=cut