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#
# Palette.pm
#
# a module for manipulating SDL_Palette *
#
# Copyright (C) 2000,2002 David J. Goehrig
package SDL::Palette;
use strict;
use SDL;
# 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 $self = {};
my $image;
if (@_) {
$image = shift;
$self->{-palette} = $image->palette();
} else { $self->{-palette} = SDL::NewPalette(256); }
bless $self, $class;
return $self;
}
sub size {
my $self = shift;
return SDL::PaletteNColors($self->{-palette});
}
sub color {
my $self = shift;
my $index = shift;
my ($r,$g,$b);
if (@_) {
$r = shift; $g = shift; $b = shift;
return SDL::PaletteColors($self->{-palette},$index,$r,$g,$b);
} else {
return SDL::PaletteColors($self->{-palette},$index);
}
}
sub red {
my $self = shift;
my $index = shift;
my $c;
if (@_) {
$c = shift;
return SDL::ColorR(
SDL::PaletteColors($self->{-palette},$index),$c);
} else {
return SDL::ColorR(
SDL::PaletteColors($self->{-palette},$index));
}
}
sub green {
my $self = shift;
my $index = shift;
my $c;
if (@_) {
$c = shift;
return SDL::ColorG(
SDL::PaletteColors($self->{-palette},$index),$c);
} else {
return SDL::ColorG(
SDL::PaletteColors($self->{-palette},$index));
}
}
sub blue {
my $self = shift;
my $index = shift;
my $c;
if (@_) {
$c = shift;
return SDL::ColorB(
SDL::PaletteColors($self->{-palette},$index),$c);
} else {
return SDL::ColorB(
SDL::PaletteColors($self->{-palette},$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
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