<?php // $Id: slideshow.php 21107 2009-05-30 16:27:09Z iflorespaz $

/*
==============================================================================
	Dokeos - elearning and course management software

	Copyright (c) 2004-2009 Dokeos SPRL
	Copyright (c) 2003 Ghent University (UGent)
	Copyright (c) 2001 Universite catholique de Louvain (UCL)

	For a full list of contributors, see "credits.txt".
	The full license can be read in "license.txt".

	This program is free software; you can redistribute it and/or
	modify it under the terms of the GNU General Public License
	as published by the Free Software Foundation; either version 2
	of the License, or (at your option) any later version.

	See the GNU General Public License for more details.

	Contact: Dokeos, 181 rue Royale, B-1000 Brussels, Belgium, info@dokeos.com
==============================================================================
*/
/**
============================================================================== 
*	@author Patrick Cool
*   @author Julio Montoya Lots of improvements, cleaning, adding security 
*	@package dokeos.document
============================================================================== 
*/
/*
==============================================================================
Developped by Patrick Cool
patrick.cool@UGent.be
Ghent University
Mai 2004
http://icto.UGent.be

Improve by Juan Carlos Ra�a Trabado
herodoto@telefonica.net
January 2008

==============================================================================
*/
// including the language file

// name of the language file that needs to be included 
$language_file = array ('slideshow', 'document');
require_once '../inc/global.inc.php';
$noPHP_SELF = true;
$path = Security::remove_XSS($_GET['curdirpath']);
$pathurl = urlencode($path);
$slide_id = Security::remove_XSS($_GET['slide_id']);
if ($path <> '/') {
	$folder = $path.'/';
} else {
	$folder = '/';
}
$sys_course_path = api_get_path(SYS_COURSE_PATH);

// including the functions for the slideshow
require_once 'slideshow.inc.php';

// breadcrumb navigation
$url = "document.php?curdirpath=".$pathurl;
$originaltoolname = get_lang('Documents');
$interbreadcrumb[] = array ("url" => Security::remove_XSS($url), "name" => $originaltoolname);

// because $nametools uses $_SERVER['PHP_SELF'] for the breadcrumbs instead of $_SERVER['REQUEST_URI'], I had to 
// bypass the $nametools thing and use <b></b> tags in the $interbreadcrump array
//$url = "slideshow.php?curdirpath=".$pathurl;
$originaltoolname = get_lang('SlideShow');
//$interbreadcrumb[]= array ("url"=>$url, "name"=>$originaltoolname );

Display :: display_header($originaltoolname, "Doc");

// loading the slides from the session
if (isset($_SESSION["image_files_only"])) {
	$image_files_only = $_SESSION["image_files_only"];
}

// calculating the current slide, next slide, previous slide and the number of slides
if ($slide_id <> "all") {
	if ($slide_id) {
		$slide = $slide_id;
	} else {
		$slide = 0;
	}
	$previous_slide = $slide -1;
	$next_slide = $slide +1;
} // if ($slide_id<>"all")
$total_slides = count($image_files_only);
?>
<script language="JavaScript" type="text/JavaScript">
<!--
function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}
//-->
</script>

<div class="actions">
	<?php
	// exit the slideshow
	echo '<a href="document.php?action=exit_slideshow&curdirpath='.$pathurl.'">'.Display::return_icon('back.png').get_lang('Back').' '.get_lang('To').' '.get_lang('DocumentsOverview').'</a>&nbsp;';

	// show thumbnails
	if ($slide_id <> "all") {
		echo '<a href="slideshow.php?slide_id=all&curdirpath='.$pathurl.'"><img src="'.api_get_path(WEB_IMG_PATH).'thumbnails.png" alt="">'.get_lang('_show_thumbnails').'</a>&nbsp;';
	} else {
		echo '<img src="'.api_get_path(WEB_IMG_PATH).'thumbnails_na.png" alt="">'.get_lang('_show_thumbnails').'&nbsp;';
	}	
	// slideshow options
	echo '<a href="slideshowoptions.php?curdirpath='.$pathurl.'"><img src="'.api_get_path(WEB_IMG_PATH).'acces_tool.gif" alt="">'.get_lang('_set_slideshow_options').'</a> &nbsp;';
?>
</div>

<?php
echo '<br />';

// =======================================================================
//				TREATING THE POST DATA FROM SLIDESHOW OPTIONS
// =======================================================================
// if we come from slideshowoptions.php we sessionize (new word !!! ;-) the options
if (isset ($_POST['Submit'])) {
	// we come from slideshowoptions.php
	$_SESSION["image_resizing"] = Security::remove_XSS($_POST['radio_resizing']);
	if ($_POST['radio_resizing'] == "resizing" && $_POST['width'] != '' && $_POST['height'] != '') {
		//echo "resizing"; 
		$_SESSION["image_resizing_width"] = Security::remove_XSS($_POST['width']);
		$_SESSION["image_resizing_height"] = Security::remove_XSS($_POST['height']);
	} else {
		//echo "unsetting the session heighte and width"; 
		$_SESSION["image_resizing_width"] = null;
		$_SESSION["image_resizing_height"] = null;
	}
} // if ($submit)


// The target height and width depends if we choose resizing or no resizing
if ($_SESSION["image_resizing"] == "resizing") {
	$target_width = $_SESSION["image_resizing_width"];
	$target_height = $_SESSION["image_resizing_height"];
} else {
	$image_width = $source_width;
	$image_height = $source_height;
}

// =======================================================================
//						THUMBNAIL VIEW
// =======================================================================
// this is for viewing all the images in the slideshow as thumbnails. 
$image_tag = array ();
if ($slide_id == "all") {
	$thumbnail_width = 100;
	$thumbnail_height = 100;
	$row_items = 4;	
	if (is_array($image_files_only)) {
		foreach ($image_files_only as $one_image_file) {	
			$image = $sys_course_path.$_course['path']."/document".$folder.$one_image_file;
			if (file_exists($image)) {
				$image_height_width = resize_image($image, $thumbnail_width, $thumbnail_height, 1);
				
				$image_height = $image_height_width[0];
				$image_width = $image_height_width[1];		
				
				if ($path and $path !== "/") {
					$doc_url = $path."/".$one_image_file;
				} else {
					$doc_url = $path.$one_image_file;
				}	
				$image_tag[] = "<img src='download.php?doc_url=".$doc_url."' border='0' width='".$image_width."' height='".$image_height."' title='".$one_image_file."'>";			
			}		
		} // foreach ($image_files_only as $one_image_file)
	}
} // if ($slide_id=="all")

// creating the table
$html_table='';
echo '<table align="center" width="760px" border="0" cellspacing="10">';
$i = 0;
$count_image=count($image_tag);
$number_image=6;
$number_iteration=ceil($count_image/$number_image);
$p=0;
for ($k=0;$k<$number_iteration;$k++) {
	echo '<tr height="'.$thumbnail_height.'">';	
	for ($i=0;$i<$number_image;$i++) {
			if (!is_null($image_tag[$p])) {
				echo '<td  style="border:1px solid; border-color: #CCCCCC #666666 #666666 #CCCCCC;">';
				echo '<div align="center"><a href="slideshow.php?slide_id='.$p.'&curdirpath='.$pathurl.' ">'.$image_tag[$p].'</a>';
				echo '</div></td>';				
			}
			$p++;
		}
	echo '</tr>';
}
echo '</table>';

// =======================================================================
//						ONE AT A TIME VIEW
// =======================================================================
// this is for viewing all the images in the slideshow one at a time. 
if ($slide_id !== "all") {
	$image = $sys_course_path.$_course['path']."/document".$folder.$image_files_only[$slide];
	if (file_exists($image)) {
		$image_height_width = resize_image($image, $target_width, $target_height);
	
		$image_height = $image_height_width[0];
		$image_width = $image_height_width[1];
	
		if ($_SESSION["image_resizing"] == "resizing") {
			$height_width_tags = 'width="'.$image_width.'" height="'.$image_height.'"';
			
			/* // Removed by Ivan Tcholakov, 04-MAY-2009. After some changes this fragment of code is not needed anymore.
			//adjust proportions. Juan Carlos Raсa Trabado TODO: replace resize_image function ?	
			$size = @ getimagesize($image);
			$height_width_tags = (($size[1] > $image_width) ? 'width="'.$image_width.'"' : '');
			$height_width_tags = (($size[1] > $image_height) ? 'height="'.$image_height.'"' : '');		
			*/
		}		
	
		// showing the comment of the image, Patrick Cool, 8 april 2005
		// this is done really quickly and should be cleaned up a little bit using the API functions
		$tbl_documents = Database::get_course_table(TABLE_DOCUMENT);
		if ($path=='/') {
			$pathpart='/';
		} else {
			$pathpart=$path.'/'; 
		}
		$sql = "SELECT * FROM $tbl_documents WHERE path='".Database::escape_string($pathpart.$image_files_only[$slide])."'";
		$result = api_sql_query($sql,__FILE__,__LINE__);
		$row = Database::fetch_array($result);
	
		// back forward buttons
		echo '<table align="center" border="0">';
		echo '<tr>';
		echo '<td align="center" >';
		// previous slide
		if ($slide > 0) {
			echo '<a href="slideshow.php?slide_id='.$previous_slide.'&amp;curdirpath='.$pathurl.'">';
		}
		echo '<img src="'.api_get_path(WEB_IMG_PATH).'silde_back.gif" alt="">';
		if ($slide > 0) {
			echo "</a> ";
		}	
		// divider
		if ($slide_id <> "all") {
			echo '</td><td valign="middle"> [ '.$next_slide.'/'.$total_slides.' ] </td><td>';
		}		
		// next slide
		if ($slide < $total_slides -1 and $slide_id <> "all") {
			echo "<a href='slideshow.php?slide_id=".$next_slide."&curdirpath=$pathurl'>";
		}
		echo '<img src="'.api_get_path(WEB_IMG_PATH).'silde_next.gif" alt="">';
		if ($slide > 0) {
			echo '</a>';
		}
		echo '</td>';
		echo '</tr>';
		echo '</table>';
		
		echo '<br/>';
	
		echo '<table align="center" border="0">';
		echo '<tr>';
		echo '<td align="center">';
		echo "<img src='download.php?doc_url=$path/".$image_files_only[$slide]."' alt='".$image_files_only[$slide]."' border='0'".$height_width_tags.">";
		echo '</td>';
		echo '</tr>';
		echo '<tr>';
		echo '<td align="center">';
		$aux= explode(".", htmlspecialchars($image_files_only[$slide]));
	    $ext= $aux[count($aux)-1];
		echo '<strong>'.basename(htmlspecialchars($image_files_only[$slide]), '.'.$ext).'</strong>';			
		echo '<br />'.$row['comment'].'<br />';	
		list($width, $high) = getimagesize($image);
		echo $width.' x '.$high.' <br />';
		echo round((filesize($image)/1024),2).' KB';	
	    echo ' - '.$ext; 	
		echo '</td>';
		echo '</tr>';
		echo '</table>';
	} else {
		Display::display_warning_message(get_lang('FileNotFound'));
	}		
} // if ($slide_id!=="all")

Display :: display_footer();
?>
