Support/Comments for WriteWord

<?php
//////////////////////////////////////////////////////////////////////////////////////////////////
//
// Snippet Name: 	WriteWord
// Short Description:	This snippet allows to generate image from the text with any font
// Version: 		0.25 ALPHA
// Author: 		Metaller
// Translator:		Igor
// 
//////////////////////////////////////////////////////////////////////////////////////////////////

if (!isset($file)) return "Font file is not entered!";
(isset($text)) ? $text : $text = "Text string is empty!";
(isset($text_angle)) ? $text_angle : $text_angle = 0;
(isset($text_size)) ? $text_size : $text_size = 14;
(isset($text_color)) ? $text_color : $text_color = "#000000";
(isset($bg_color)) ? $bg_color : $bg_color = "#FFFFFF";
$scale = ($scale == TRUE) ? TRUE : FALSE;
$format = strtolower($format);
$format = ($format == "png") ? "png" : "jpg";
$transparent = ($transparent == TRUE) ? TRUE : FALSE;
(isset($quality)) ? $quality : $quality = 70;

$ww_template = $tpl ? $modx->getChunk($tpl):  "<img src='[+ww.fileurl+]' width='[+ww.width+]' height='[+ww.height+]' border='0' title='[+ww.text+]'>";

if (substr($text_color, 0,1) == "#") $text_color = substr($text_color, 1,6);
if (substr($bg_color, 0,1) == "#") $bg_color = substr($bg_color, 1,6);

$result = compact("file",  "text",  "text_angle",  "text_size",  "text_color",  "bg_color", "scale",  "format",  "transparent", "quality");

foreach ($result as $k=>$v)
{
	$res[] = $k."=".$v;
}

$qry = implode("&", $res);

$code = md5($qry);

$filename=$modx->config['base_path']."assets/cache/{$code}.pageCache.{$format}";
$fileurl = $modx->config['base_url']."assets/cache/{$code}.pageCache.{$format}";

if (file_exists($filename)) 
{
	$size = getimagesize($filename);
	$im_width = $size[0];
	$im_height = $size[1];
	
	$ww_template = str_replace('[+ww.width+]', $im_width, $ww_template);
	$ww_template = str_replace('[+ww.height+]', $im_height, $ww_template);
	$ww_template = str_replace('[+ww.fileurl+]', $fileurl, $ww_template);
	$ww_template = str_replace('[+ww.text+]', $text, $ww_template);
		
	return $ww_template;
}


if ($modx->config['modx_charset']!="UTF-8") $text = mb_convert_encoding($text, "UTF-8", $modx->config['modx_charset']);

if (!extension_loaded('gd')) {
	if (strtoupper(substr(PHP_OS, 0,3) == 'WIN')) {
		@dl('php_gd2.dll');
	}
	else {
		@dl('gd2.so');
	}
}

$fontstmp= $modx->config['base_path']."assets/".$file;

$text_font = sprintf("%s",$fontstmp);

$box 		= imagettfbbox ( $text_size, $text_angle, $text_font, $text);
$text_width	= $box[2]-$box[0];
$text_height= $box[5]-$box[3];


if ($scale)
{
	$text_size  = round((20 * $im_width)/$text_width);
	$box 		= imagettfbbox ( $text_size, $text_angle, $text_font, $text);
	$text_width	= $box[2]-$box[0];
	$text_height= $box[5]-$box[3];

	$text_x     	= ($im_width - $text_width)/2;
	$text_y 		= ($im_height - $text_height)/2;
}else{
	$im_width = (isset($im_width))  ? $im_width : abs($text_width);
	$im_height = (isset($im_height))  ? $im_height : abs($text_height);
	$text_x     	= -$box[6]-1;
	$text_y 		= -$box[7]-1;
}
if($transparent){
$im_text 		= imageCreateTrueColor ($im_width, $im_height);
imageSaveAlpha($im_text, true);
imageAlphaBlending($im_text, false);
$tlo = imagecolorallocatealpha($im_text, 220, 220, 220, 127);
imagefill($im_text, 0, 0, $tlo);
}else{
$im_text 		= imagecreate ($im_width, $im_height);
}

$bg_r = hexdec(substr($bg_color, 0,2));
$bg_g = hexdec(substr($bg_color, 2,2));
$bg_b = hexdec(substr($bg_color, 4,2));

$bgcolor 		= imagecolorallocate ($im_text, $bg_r, $bg_g, $bg_b);

$text_r = hexdec(substr($text_color, 0,2));
$text_g = hexdec(substr($text_color, 2,2));
$text_b = hexdec(substr($text_color, 4,2));

$textcolor 	= imagecolorallocate ($im_text, $text_r, $text_g, $text_b);

imagettftext	(	$im_text,
$text_size,
$text_angle,
$text_x,
$text_y,
$textcolor,
$text_font,
$text);

if ($transparent) imagecolortransparent($im_text, $bgcolor);

if ($format == "png")
{
	if (!file_exists($modx->config['base_path']."assets/cache/{$code}.pageCache.{$format}")) imagepng($im_text, $modx->config['base_path']."assets/cache/{$code}.pageCache.{$format}"); 
}
else
{
	if (!file_exists($modx->config['base_path']."assets/cache/{$code}.pageCache.{$format}")) imagejpeg($im_text, $modx->config['base_path']."assets/cache/{$code}.pageCache.{$format}",$quality); 
}

imagedestroy($im_text);

if ($modx->config['modx_charset']!="UTF-8") $text = mb_convert_encoding($text, $modx->config['modx_charset'], "UTF-8");

	
$ww_template = str_replace('[+ww.width+]', $im_width, $ww_template);
$ww_template = str_replace('[+ww.height+]', $im_height, $ww_template);
$ww_template = str_replace('[+ww.fileurl+]', $fileurl, $ww_template);
$ww_template = str_replace('[+ww.text+]', $text, $ww_template);
	
return $ww_template;
?>

[[WriteWord? &file=`media/somefont.ttf` &text=`foo`&scale=`TRUE`]]

PHP error debug
  Error: 	imagecreate() [function.imagecreate]: Invalid image dimensions	 
  Error type/ Nr.: 	Warning - 2	 
  File: 	/home/httpd/vhosts/mydomain.ch/subdomains/modxcms/httpdocs/manager/includes/document.parser.class.inc.php(772) : eval()'d code	 
  Line: 	100

<img src="([+ww.fileurl+])"  width="[+ww.width+]" height="[+ww.height+]" alt="titre page:[+ww.text+]" title="[+ww.text+]" />

<img src='[+ww.fileurl+]' width='[+ww.width+]' height='[+ww.height+]' border='0' title='[+ww.text+]' />

width='[+ww.width+]' height='[+ww.height+]'