#!/usr/bin/env perl

use strict;
use warnings;

use Tk;
use Tk::PNG;
use Time::HiRes 'time';

my $mw = MainWindow::->new();

my @common_raw_rgbs;
my $png_image = 'pm_11139959_image.png';
my ($W, $H) = (100, 100);

{
    no warnings 'qw';
    @common_raw_rgbs = qw{
        #ff0000 #ffff00 #009900 #00ffff #0000ff #ff00ff
    };
}

my @raw_rgbs = (@common_raw_rgbs) x int(1 + ($W * $H / (0+@common_raw_rgbs)));

my $t0 = time;

my $image = $mw->Photo(-format => 'png', -width => $W, -height => $H);
my $i = 0;

for my $y (0 .. $H - 1) {
    for my $x (0 .. $W - 1) {
        $image->put([$raw_rgbs[$i++]], -to => $x, $y, $x + 1, $y + 1);
    }
}

$image->write($png_image);

my $t1 = time;

$mw->Label(-text => 'Image:')->pack();
$mw->Label(-image => $image)->pack();
$mw->Label(-text => 'Time: ' . sprintf '%.6f', $t1 - $t0)->pack();

MainLoop;