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#!/usr/bin/perl
# $Id: color-y.pl 1420 2004-04-30 11:35:18Z lecoanet $
# these simple samples have been developped by C. Mertz mertz@cena.fr
use vars qw( $VERSION );
($VERSION) = sprintf("%d.%02d", q$Revision: 1420 $ =~ /(\d+)\.(\d+)/);
use Tk;
use Tk::Zinc;
use strict;
my $defaultfont = '-adobe-helvetica-bold-r-normal--*-120-*-*-*-*-*-*';
my $mw = MainWindow->new();
my $zinc = $mw->Zinc(-width => 700, -height => 600,
-borderwidth => 3, -relief => 'sunken',
-render => 1, # for activating the openGL render
)->pack;
# This demo no more dies if there is no openGL. It simply displays
# a string on the bootom of the window!
$zinc->add('rectangle', 1, [10, 10, 340, 100], -fillcolor => "=axial 90 |red |blue", -filled => 1);
$zinc->add('text', 1,
-font => $defaultfont,
-text => "A variation from non transparent red\n to non transparent blue.",
-anchor => 'nw',
-position => [20, 20]);
$zinc->add('rectangle', 1, [360, 10, 690, 100], -fillcolor => "=axial 0 30 0 -30 |red |blue", -filled => 1);
$zinc->add('text', 1,
-font => $defaultfont,
-text => "The same with a reduced span.",
-anchor => 'nw',
-position => [370, 20]);
$zinc->add('rectangle', 1, [10,110, 330, 200], -fillcolor => "=axial 90|red;40 |blue;40", -filled => 1);
$zinc->add('text', 1,
-font => $defaultfont,
-text => "A variation from 40%transparent red\nto 40% transparent blue.",
-anchor => 'nw',
-position => [20, 120]);
$zinc->add('rectangle', 1, [360,110, 690, 200], -fillcolor => "=axial 0 30 0 -30|red;40 |blue;40", -filled => 1);
$zinc->add('text', 1,
-font => $defaultfont,
-text => "The same with a reduced span.",
-anchor => 'nw',
-position => [370, 120]);
$zinc->add('rectangle', 1, [10, 210, 690, 300], -fillcolor => "=axial 90 |red;40|green;40 50|blue;40", -filled => 1);
$zinc->add('text', 1,
-font => $defaultfont,
-text => "A variation from 40%transparent red to 40% transparent blue.\n".
"through a 40%green on the middle",
-anchor => 'nw',
-position => [20, 220]);
$zinc->add('text', 1,
-font => $defaultfont,
-text => "Two overlaping transparently colored rectangles on a white background",
-anchor => 'nw',
-position => [20, 320]);
$zinc->add('rectangle', 1, [10, 340, 690, 590], -fillcolor => "white", -filled => 1);
$zinc->add('rectangle', 1, [200, 350, 500, 580], -fillcolor => "=axial 90 |red;40|green;40 50|blue;40", -filled => 1);
$zinc->add('rectangle', 1, [10, 400, 690, 500], -fillcolor => "=axial 90 |yellow;40|black;40 50|cyan;40", -filled => 1);
$zinc->add('text', 1,
-font => $defaultfont,
-text => "WITHOUT openGL, NO GRADIENT. SORRY!",
-anchor => 'nw',
-position => [20, 550]) unless $zinc->cget(-render);
MainLoop;
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