class.textimage.php

<?php

	require_once("../includes/config.php");
	require_once("../includes/class.textimage.php");

	$image = new TextImage();

	$image->color('000000');
	$image->text(!empty($_GET['text']) ? $_GET['text'] : 'Error:-missing-?text-arguement');

	header("Content-Type: image/png");

	/*header("Cache-Control: private, max-age=10800, pre-check=10800");
	header("Pragma: private");
	header("Expires: " . date(DATE_RFC822, strtotime("2 day")));

	if (isset($_SERVER['HTTP_IF_MODIFIED_SINCE'])) {

		header('Last-Modified: ' . $_SERVER['HTTP_IF_MODIFIED_SINCE'], true, 304);
		exit;
	}*/

	$image->output();

?>

<?php

	class TextImage {

		function __construct() {

			$this->rotationDegree = 0;
			$this->font = '../fonts/arial.ttf';
			$this->size = (!empty($_GET['size']) ? $_GET['size'] : 150);
			$this->fontSize = 24/150*$this->size;
			$this->width = $this->size;
			$this->height = $this->size;
		}

		public function color($hex) {

			if ($hex[0] == '#') {

       			$hex = substr($hex, 1);
			}

			if (strlen($hex) == 6) {

				list($r, $g, $b) = array($hex[0].$hex[1],
										 $hex[2].$hex[3],
										 $hex[4].$hex[5]);

			}
			else if (strlen($hex) == 3) {

				list($r, $g, $b) = array($hex[0].$hex[0], $hex[1].$hex[1], $hex[2].$hex[2]);
			}
			else {

				return false;
			}

			$this->fontColor = array(
				'r' => hexdec($r),
				'g' => hexdec($g),
				'b' => hexdec($b)
			);
		}

		public function text($text) {

			$this->text = $text;
		}

		public function output() {

			$this->create();

			$this->fitText(urldecode($this->text));

			$this->display();

			$this->trash();
		}

		private function create() {

			$this->newImage = imagecreatetruecolor($this->width, $this->height);
			imagealphablending($this->newImage, false);
			imagesavealpha($this->newImage, true);
			$transparent = imagecolorallocatealpha($this->newImage, 255, 255, 255, 127);
			imagefilledrectangle($this->newImage, 0, 0, $this->width, $this->height, $transparent);
		}

		private function fitText($text) {

			imagealphablending($this->newImage, true);
			$num = count(explode('-', $this->text));

			$i = 1;
			foreach(explode('-', $text) as $word) {

				//$word = ucwords(strtolower($word));

				$xbox = imagettfbbox($this->fontSize, $this->rotationDegree, $this->font, $word);
				$x = ($this->width / 2) - (((($xbox[2] - $xbox[0]) + ($xbox[4] - $xbox[6])) / 2) / 2);

				$ybox = imagettfbbox($this->fontSize, $this->rotationDegree, $this->font, substr($word, 0, 1));
				$y = ($this->height / 2) - (((($ybox[3] - $ybox[5]) + ($ybox[1] - $ybox[7])) / 2) / 2) + ($ybox[3] - $ybox[5]);

				$color = imagecolorallocate($this->newImage, $this->fontColor['r'], $this->fontColor['g'], $this->fontColor['b']);

				$mod = $this->fontSize * 1.5;
				$y = $y + (($i - $num) * $mod) + ($num - 1) * $mod / 2;

				imagettftext($this->newImage, $this->fontSize, $this->rotationDegree, $x, $y, $color, $this->font, $word);

				$i++;
			}
		}

		private function display() {

			imagepng($this->newImage);
		}

		private function trash() {

			imagedestroy($this->newImage);
		}
	}

?>