<?php //: $RCSfile: image_rotate.class.php,v $ {
	//: $Revision: 1.0 $
	//: $Date: 2007/10/08 14:11:25 $
	//: $Author: Feighen $
	//:-
	
	/**	image rotator class
		@author Feighen Oosterbroek
		@author hide@address.com
		
		Example usage:
		$img_rot = new imageRotator();
		$img_rot->setImgDir("images/butchery/");
		$img_rot->setTimeOut();
		$img_rot->scriptOutput();
		$html = $img_rot->returnHtml();
	*/
	class imageRotator {
		//: Variables
		protected static $img_dir;
		protected static $dir_contents = array();
		protected static $time_out;
		protected static $html;
		
		//: Public Functions {
			# class constructor
			public function __construct() {
				return true;
			}
			public function imageRotator() {
				return true;
			}
			# class functions
			public function setImgDir($dir) {
				self::$img_dir = $dir;
			}
			
			public function setTimeOut($time) {
				self::$time_out = $time;
			}
			
			public function scriptOutput($pattern = null, $config = null) {
				$images = self::getDirContents(self::$img_dir, $pattern);
				
				self::$html = (string)"<script type='text/javascript'>\n";
				self::$dir_contents = is_array(self::$dir_contents) ? self::$dir_contents : array();
				self::$html .= "var images = new Array();\n";
				foreach (self::$dir_contents as $key=>$val) {
					self::$html .= "images[".$key."] = '".$val."';\n";
				}
				self::$html .= "function alterImage() {
					var rand = getRandomInt(0, images.length-1);
					var img_src = images[rand];
					
					if (document.getElementById('rot_img')) {
						document.getElementById('rot_img').src = img_src;
					}
				}
				
				/* from the mozilla javascript reference at http://developer.mozilla.org */
				function getRandomInt(min, max) {
					return Math.floor(Math.random() * (max - min + 1)) + min;
				}
				
				function displayImage(img) {
					window.open(img.src);
				}
				
				var timeId = window.setInterval(alterImage, ".(self::$time_out*1000).");
				\n";
				self::$html .= "</script>\n";
				$rand = rand(0, count(self::$dir_contents)-1);
				self::$html .= "<img src='".self::$dir_contents[$rand]."' id='rot_img' title='Click to view full size' style='width: ".($config["width"] ? $config["width"] : "200px")."; height: ".($config["height"] ? $config["height"] : "150px")."; cursor: pointer; float: right;' onclick='displayImage(this);'>\n";
			}
			
			public function returnHtml() {
				return self::$html;
			}
			
			public function printHtml() {
				print(self::$html."\n");
			}
		// }
		//: Private Functions {
			private function getDirContents($dir, $pattern = null) {
				if (!is_dir($dir)) {print("Could not open the specified directory.\n"); return false;}
				$dh = dir($dir);
				
				while (($entry = $dh->read()) !== false) {
					if ($entry == "." || $entry == "..") {continue;}
					
					if (is_dir($dir.$entry)) {
						self::getDirContents($dir.$entry."/", $pattern);
					} else {
						if ($pattern) {
							preg_match_all($pattern, $entry, $matches);
							if ($matches[0]) {
								self::$dir_contents[] = $dir.$entry;
							}
						} else {
							self::$dir_contents[] = $dir.$entry; 
						}
					}
				}
			}
		// }
	}
//}
?>