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package Tk::Zinc::Logo;
#---------------------------------------------------------------
#
# Module : Logo.pm
# $Id: Logo.pm 1156 2003-09-15 12:25:06Z mertz $
#
# Copyright (C) 2001-2003
# Centre d'Études de la Navigation Aérienne
# Authors: Jean-Luc Vinot <vinot@cena.fr>
#
#---------------------------------------------------------------
use vars qw( $VERSION );
($VERSION) = sprintf("%d.%02d", q$Revision: 1156 $ =~ /(\d+)\.(\d+)/);
use strict;
use Carp;
use Math::Trig;
my @Gradiants;
# paramètres de construction graphique
my %builder = (-gradset => {'logoshape' => '=axial 270 |#ffffff;100 0 28|#66848c;100 96|#7192aa;100 100',
'logopoint' => '=radial -20 -20 |#ffffff;100 0|#f70000;100 48|#900000;100 80|#ab0000;100 100',
'logoptshad' => '=path 0 0 |#770000;64 0|#770000;70 78|#770000;0 100',
},
-shape => {-form => {-itemtype => 'curve',
-coords => [[0,0],[106,0],[106,58],[122,41],[156,41],[131,69],[153,99],[203,41],
[155,41],[155,0],[225.71,0],[251.34,0,'c'],[265.17,29.63,'c'],
[248.71,49.27],[202,105],[246,105],[246,87],[246,59.385,'c'],[268.38,37,'c'],
[296,37],[323.62,37,'c'],[346,59.385,'c'],[346,87],[346,148],[305,148],
[305,87],[305,82.58,'c'],[301.42,79,'c'],[297,79],[292.58,79,'c'],
[289,82.58,'c'],[289,87],[289,150],[251,150],[251,130],[251,125.58,'c'],
[247.42,122,'c'],[243,122],[243,122],[238.58,122,'c'],[235,125.58,'c'],
[235,130],[235,150],[168.12,150],[144.7,150,'c'],[132.38,122.57,'c'],
[147.94,105.06],[148,105],[120,105],[104,81],[104,105],[74,105],[74,41],
[52,41],[52,105],[20,105],[20,41],[0,41]],
-contour => ['add', -1, [[395,78],[395,37],[364.62,37,'c'],[340,61.62,'c'],[340,92],
[340,93],[340,123.38,'c'],[364.62,148,'c'],[395,148],[409,148],
[409,107],[395,107],[386.72,107,'c'],[380,100.28,'c'],[380,92],
[380,93],[380,84.72,'c'],[386.72,78,'c'],[395,78]]],
-params => {-closed => 0,
-filled => 1,
-visible => 1,
-fillcolor => 'logoshape',
-linewidth => 2.5,
-linecolor => '#000000',
-priority => 40,
-fillrule => 'nonzero',
-tags => ['zinc_shape'],
},
},
-shadow => {-clone => '-form',
-translate => [6, 6],
-params => {-fillcolor => '#000000;18',
-linewidth => 0,
-priority => 20,
},
},
},
-point => {-coords => [240, 96],
-params => {-alpha => 80,
-priority => 100,
},
-form => {-itemtype => 'arc',
-coords => [[-20, -20], [20, 20]],
-params => {-priority => 50,
-filled => 1,
-linewidth => 1,
-linecolor => '#a10000;100',
-fillcolor => 'logopoint',
-closed => 1,
},
},
-shadow => {-clone => '-form',
-translate => [5, 5],
-params => {-fillcolor => 'logoptshad',
-linewidth => 0,
-priority => 20,
},
},
},
);
sub new {
my $proto = shift;
my $type = ref($proto) || $proto;
my %params = @_;
my $self = {};
bless ($self, $type);
if (exists $params{'-widget'}) {
$self->{'-widget'} = $params{'-widget'};
} else {
croak "in Tk::Zinc::Logo constructor, the -widget attribute must be defined\n";
}
$self->{'-parent'} = (exists $params{'-parent'}) ? $params{'-parent'} : 1;
$self->{'-priority'} = (exists $params{'-priority'}) ? $params{'-priority'} : 500;
$self->{'-position'} = (exists $params{'-position'}) ? $params{'-position'} : [0, 0];
$self->{'-scale'} = (exists $params{'-scale'}) ? $params{'-scale'} : [1, 1];
$self->drawLogo();
return bless $self, $type;
}
sub drawLogo {
my ($self) = @_;
my $zinc = $self->{'-widget'};
my $parent = $self->{'-parent'};
my $priority = $self->{'-priority'};
if ($builder{'-gradset'}) {
while (my ($name, $gradiant) = each( %{$builder{'-gradset'}})) {
# création des gradiants nommés
$zinc->gname($gradiant, $name) unless $zinc->gname($name);
push(@Gradiants, $name);
}
}
# création des groupes logo
# logogroup : groupe de coordonnées
my $logogroup = $self->{'-item'} = $zinc->add('group', $parent, -priority => $priority);
$zinc->coords($logogroup, $self->{'-position'}) if ($self->{'-position'});
# group de scaling
my $group = $self->{'-scaleitem'} = $zinc->add('group', $logogroup);
$zinc->scale($group, @{$self->{'-scale'}}) if ($self->{'-scale'});
# création de l'item shape (Zinc)
my $formstyle = $builder{'-shape'}->{'-form'};
$self->ajustLineWidth($formstyle->{'-params'});
my $shape = $zinc->add('curve', $group,
$formstyle->{'-coords'},
%{$formstyle->{'-params'}},
);
$zinc->contour($shape, @{$formstyle->{'-contour'}});
# ombre portée de la shape
my $shadstyle = $builder{'-shape'}->{'-shadow'};
my $shadow = $zinc->clone($shape, %{$shadstyle->{'-params'}});
$zinc->translate($shadow, @{$shadstyle->{'-translate'}}) if ($shadstyle->{'-translate'});
# réalisation du point
my $pointconf = $builder{'-point'};
my $ptgroup = $zinc->add('group', $group, %{$pointconf->{'-params'}});
$zinc->coords($ptgroup, $pointconf->{'-coords'});
my $pointstyle = $pointconf->{'-form'};
my $point = $zinc->add('arc', $ptgroup,
$pointstyle->{'-coords'},
%{$pointstyle->{'-params'}},
);
my $shadpoint = $zinc->clone($point, %{$shadstyle->{'-params'}});
$shadstyle = $pointconf->{'-shadow'};
$zinc->translate($shadpoint, @{$shadstyle->{'-translate'}});
}
sub ajustLineWidth {
my ($self, $style, $scale) = @_;
if ($style->{'-linewidth'}) {
my ($sx, $sy) = @{$self->{'-scale'}};
my $linewidth = $style->{'-linewidth'};
if ($linewidth >= 2) {
my $ratio = ($sx > $sy) ? $sy : $sx;
$style->{'-linewidth'} = $linewidth * $ratio;
}
}
}
1;
__END__
=head1 NAME
Tk::Zinc::Logo - a perl module for drawing the TkZinc logo.
=head1 SYNOPSIS
use Tk::Zinc::Logo;
my $zinc = MainWindow->new()->Zinc()->pack;
my $logo = $zinc->ZincLogo([options]);
=head1 OPTIONS
=over
=item B<-parent> => zinc group
Specify the parent group. Default is 1.
=item B<-position> => [x, y]
Specify the relative position of the logo in its parent group. Default is [0, 0].
=item B<-priority> => integer
Specify the priority of the logo in its parent group. Default is 500.
=item B<-scale> => [sx, sy]
Scecify the xscale and yscale factors of the logo. Default is [1, 1].
=back
=head1 AUTEUR
Jean-Luc Vinot <vinot@cena.fr>
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