<?php
// Graph-bar

$usage = round($_GET['usage']);

if ($usage > 100) $usage = 100;
if ($usage < 0) $usage = 0;

$im = imagecreatefrompng('gfx/bar_template.png');


if ($usage > 0) {

	$bar_color = imagecolorallocate($im, 97, 180, 243);
	$bar_light = imagecolorallocate($im, 146, 201, 243);
	$bar_dark = imagecolorallocate($im, 44, 135, 205);
	$bar_line = imagecolorallocate($im, 75, 75, 75);

	imagefilledrectangle($im, 1,1, $usage, 14, $bar_color);

	imageline($im, 1,1, $usage, 1, $bar_light);
	imageline($im, 1,1, 1, 14, $bar_light);

	imageline($im, 2, 14, $usage, 14, $bar_dark);
	imageline($im, $usage, 1, $usage, 14, $bar_dark);

	imageline($im, $usage+1, 1, $usage+1, 14, $bar_line);
}

header('Content-type: image/png');
imagepng($im);
?>