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<?php
/*
 * Smarty plugin
 * -------------------------------------------------------------
 * File:     function.text.php
 * Purpose:  creates graphical headlines
 *
 * Author:   Christoph Erdmann <mail@cerdmann.com>
 * Version:  26.11.2004
 * Internet: http://www.cerdmann.com
 *
 * Changelog:
 * 2004-11-28 New "html"-paramter to use additional HTML-attributes
 * 2004-11-28 New "dynamic"-paramter recreates images without waste files
 * 2004-11-26 Some Change in structure, better documentation, better error-handling
 * 2004-11-25 Support for prehtml and posthtml
 * -------------------------------------------------------------
 */

// Todo:

if (!isset($smarty->imagetextcount)) $smarty->imagetextcount = 0;

function smarty_function_imagetext($params, &$smarty)
	{

        if(isset($params['now'])){
                if(isset($params['format']))
                  $format = $params['format'];
                else
		  $format = '%Y-%m-%d %H:%M:%S %z';
                $params['text'] = strftime($format,time());
        }


        if(isset($params['title'])){
          global $gCms;
          $params['text'] = strtoupper($gCms->variables[page_name]);


          $query  = "SELECT `content_name` FROM `".$gCms->config["db_prefix"]."content` WHERE ";
          $query .= "`content_alias` = '".$params['text']."'";
          $query .= " LIMIT 1;";
          $dbresult = $gCms->db->Execute($query);
          
          $params['text'] = " ";
          while ($row = $dbresult->FetchRow()) {
              $params['text'] = $row["content_name"];
          }
        

        }



### Voreinstellungen
	// Config einlesen

	$config = parse_ini_file('modules/ImageText/textcache/styles.ini',true);
	$config['main']['folder']	= 'modules/ImageText/textcache/';
	$config['main']['fonts']	= 'modules/ImageText/textcache/fonts/';
	$config['main']['cache']	= 'modules/ImageText/textcache/cache/'; 
// Nur dieser Ordner muss ffentlich zug?lich sein

	// Welcher Style soll verwendet werden
	$style = $config[$params['style']];
	// Params-Werte berschreiben style-werte (Den "text"-Wert aus Style herausnehmen)
	foreach ($params as $key=>$value) if ($key != 'text') $style[$key] = $value;

	// Fehlerhafte Eingaben abfangen
    if (empty($params['text'])) { $smarty->trigger_error("imagetext: missing 'text' parameter"); return; }
    if (empty($params['style'])) { $smarty->trigger_error("imagetext: missing 'style' parameter"); return; }
    if (empty($style['font'])) { $smarty->trigger_error("imagetext: missing 'font' parameter"); return; }
    if (empty($style['size'])) { $smarty->trigger_error("imagetext: missing 'size' parameter"); return; }
    if (empty($style['bgcolor'])) { $smarty->trigger_error("imagetext: missing 'bgcolor' parameter"); return; }
    if (empty($style['fgcolor'])) { $smarty->trigger_error("imagetext: missing 'fgcolor' parameter"); return; }
    if (empty($style['width'])) { $smarty->trigger_error("imagetext: missing 'width' parameter"); return; }
    if (empty($style['height'])) { $smarty->trigger_error("imagetext: missing 'height' parameter"); return; }

	// Welche Schrift soll verwendet werden
	$font = $config['main']['fonts'].$style['font'];
	// Hash des Textes sowie aller Paramter fr die Cache-Funktion
	$hash = md5(implode('',$style).$params['text']);
	// Die URL des zu erstellenden Bildes
	$imgurl	= $config['main']['cache'].$params['style'].'_'.$hash.'.gif';
	// Die URL ?ert sich bei dynamischen Bildern
	if (empty($style['fname'])){
	if ($style['dynamic'] OR $style['dev'])
		{
		$hash = md5(implode('',$style).$smarty->imagetextcount);
		$imgurl	= $config['main']['cache'].$smarty->imagetextcount.'_'.$hash.'.gif';
		$smarty->imagetextcount++;
		}
	}
	else {
    $imgurl	= $config['main']['cache'].$style['fname'].'.gif';
  }
		

### Bei Bedarf gecachtes Bild ausgeben
	if (file_exists($imgurl) && $style['dev'] != true && $style['dynamic'] != true) return $style['prehtml'].'<img src="'.$imgurl.'" border="0" alt="'.$params['text'].'" '.$style['html'].' />'.$style['posthtml'];


### ansonsten neu erstellen
	// Funktion, um aus Hex-Werten RGB-Werte zu gewinnen und einen Farb-Handler zurckzugeben
	if (!function_exists('fromhex'))
		{
		function fromhex($image,$string) {
			sscanf($string, "%2x%2x%2x", $red, $green, $blue);
			return ImageColorAllocate($image,$red,$green,$blue);
			}
   		}
		
	### Zuersteinmal ein viermal so gro?s Bild erstellen, welches danach heruntergerechnet wird, um das Kerning zu verbessern
	// Der Multiplikator. Je gr?r, desto besser das Kerning, aber desto langsamer das Ertellen
	$multi = 4;

	// Ausma? der Grafik ausrechnen
	$bbox = imageftbbox ($style['size']*$multi, 0, $font, $params['text']);
	
	$xcorr=0-$bbox[6]; // northwest X
	$ycorr=0-$bbox[7]; // northwest Y
	$box['left']=$bbox[6]+$xcorr;
	$box['height']=abs($bbox[5])+abs($bbox[1]);
	$box['width']=abs($bbox[2])+abs($bbox[0]);
	$box['top'] = abs($bbox[5]);

	// Nun das erste gro? Bild erstellen
	$im = imagecreate ($box['width'], $box['height']);
	$bgcolor = fromhex($im,$style['bgcolor']);
	$fgcolor = fromhex($im,$style['fgcolor']);
	imagettftext ($im, $style['size']*$multi, 0, $box['left'], $box['top'], $fgcolor, $font, $params['text']);
	
	// Jetzt das gro? Bild heruntersamplen
	if ($style['trim']) $ds = imagecreatetruecolor ($box['width']/$multi+$params['addx'], $style['height']);
	else $ds = imagecreatetruecolor ($style['width'], $style['height']);
	$bgcolor2 = fromhex($ds,$style['bgcolor']);
	imageFill($ds,0,0,$bgcolor2);
	imagecopyresampled($ds,$im,0,$style['y'],0,0,$box['width']/$multi, $box['height']/$multi,$box['width'], $box['height']);
	imagetruecolortopalette($ds,0,256);
	imagepalettecopy($ds,$im);
	ImageColorTransparent($ds,$bgcolor);

   	// Wohin schreiben
	ImageGIF ($ds,$imgurl);
	ImageDestroy ($im);
	ImageDestroy ($ds);

	// und ausgeben
	if ($style['dev']) $border = 1; else $border = 0;
	return $style['prehtml'].'<img src="'.$imgurl.'" style="border: '.$border.'px solid #00ff00" alt="'.$params['text'].'" '.$style['html'].' />'.$style['posthtml'];
	}
?>