Security::remove_XSS($url), 'name' => $originaltoolname);
$originaltoolname = get_lang('SlideShow');
Display :: display_header($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
$slide = null;
if ($slide_id != 'all') {
	$slide = $slide_id ? $slide_id : 0;
	$previous_slide = $slide - 1;
	$next_slide = $slide + 1;
}
$total_slides = count($image_files_only);
?>
';
	}
}
// Exit the slideshow
echo ''.
    Display::return_icon('back.png',get_lang('BackTo').' '.get_lang('DocumentsOverview'),'',ICON_SIZE_MEDIUM).'';
// Show thumbnails
if ($slide_id != 'all') {
	echo ''.
        Display::return_icon('thumbnails.png',get_lang('ShowThumbnails'),'',ICON_SIZE_MEDIUM).'';
} else {
	echo Display::return_icon('thumbnails_na.png',get_lang('ShowThumbnails'),'',ICON_SIZE_MEDIUM);
}
// Slideshow options
echo ''.
    Display::return_icon('settings.png',get_lang('SetSlideshowOptions'),'',ICON_SIZE_MEDIUM).'';
?>
';
/*	TREATING THE POST DATA FROM SLIDESHOW OPTIONS */
// If we come from slideshowoptions.php we sessionize (new word !!! ;-) the options
if (isset($_POST['Submit'])) {
	// We come from slideshowoptions.php
	//$_SESSION["auto_image_resizing"]=Security::remove_XSS($_POST['auto_radio_resizing']);
	$_SESSION["image_resizing"] = Security::remove_XSS($_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;
	}
}
$target_width = $target_height = null;
// The target height and width depends if we choose resizing or no resizing
if (isset($_SESSION["image_resizing"]) &&  $_SESSION["image_resizing"] == "resizing") {
	$target_width = $_SESSION["image_resizing_width"];
	$target_height = $_SESSION["image_resizing_height"];
}
/*	THUMBNAIL VIEW */
// This is for viewing all the images in the slideshow as thumbnails.
$image_tag = array ();
if ($slide_id == 'all') {
	// Config for make thumbnails
    $allowed_thumbnail_types = array('jpg', 'jpeg', 'gif', 'png');
	$max_thumbnail_width     = 100;
	$max_thumbnail_height    = 100;
	$png_compression	     = 0;//0(none)-9
	$jpg_quality  	         = 75;//from 0 to 100 (default is 75). More quality less compression
	$directory_thumbnails = $sys_course_path.$_course['path'].'/document'.$folder.'.thumbs/';
	//Other parameters only for show tumbnails
	$row_items 			     = 4;//only in slideshow.php
	$number_image 			 = 7;//num icons cols to show
	$thumbnail_width_frame=$max_thumbnail_width;//optional $max_thumbnail_width+x
	$thumbnail_height_frame=$max_thumbnail_height;
	// Create the template_thumbnails folder (if no exist)
	if (!file_exists($directory_thumbnails)) {
		@mkdir($directory_thumbnails, api_get_permissions_for_new_directories());
    }
	// check files and thumbnails
	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;
			$image_thumbnail= $directory_thumbnails.'.'.$one_image_file;
			if (file_exists($image)) {
				//check thumbnail
				$imagetype = explode(".", $image);
                //or check $imagetype = image_type_to_extension(exif_imagetype($image), false);
				$imagetype = strtolower($imagetype[count($imagetype)-1]);
				if(in_array($imagetype,$allowed_thumbnail_types)) {
					if (!file_exists($image_thumbnail)){
                        //run each once we view thumbnails is too heavy, then need move into  !file_exists($image_thumbnail, and only run when haven't the thumbnail
						$original_image_size = api_getimagesize($image);
						switch($imagetype) {
							case 'gif':
								$source_img = imagecreatefromgif($image);
								break;
							case 'jpg':
								$source_img = imagecreatefromjpeg($image);
								break;
							case 'jpeg':
								$source_img = imagecreatefromjpeg($image);
								break;
							case 'png':
								$source_img = imagecreatefrompng($image);
								break;
						}
                        $new_thumbnail_size = api_calculate_image_size(
                            $original_image_size['width'],
                            $original_image_size['height'],
                            $max_thumbnail_width,
                            $max_thumbnail_height
                        );
						if($max_thumbnail_width>$original_image_size['width'] && $max_thumbnail_height>$original_image_size['height']){
							$new_thumbnail_size['width']=$original_image_size['width'];
							$new_thumbnail_size['height']=$original_image_size['height'];
						}
						$crop = imagecreatetruecolor($new_thumbnail_size['width'], $new_thumbnail_size['height']);
						// preserve transparency
						if($imagetype == "png"){
							imagesavealpha($crop, true);
							$color = imagecolorallocatealpha($crop,0x00,0x00,0x00,127);
							imagefill($crop, 0, 0, $color);
						}
						if ($imagetype == "gif") {
							$transindex = imagecolortransparent($source_img);
                            $palletsize = imagecolorstotal($source_img);
							 //GIF89a for transparent and anim (first clip), either GIF87a
							 if ($transindex >= 0 && $transindex < $palletsize){
								 $transcol = imagecolorsforindex($source_img, $transindex);
								 $transindex = imagecolorallocatealpha($crop, $transcol['red'], $transcol['green'], $transcol['blue'], 127);
								 imagefill($crop, 0, 0, $transindex);
								 imagecolortransparent($crop, $transindex);
							 }
						}
						//resampled image
                        imagecopyresampled(
                            $crop,
                            $source_img,
                            0,
                            0,
                            0,
                            0,
                            $new_thumbnail_size['width'],
                            $new_thumbnail_size['height'],
                            $original_image_size['width'],
                            $original_image_size['height']
                        );
						switch ($imagetype) {
							case 'gif':
								imagegif($crop,$image_thumbnail);
								break;
							case 'jpg':
								imagejpeg($crop,$image_thumbnail,$jpg_quality);
								break;
							case 'jpeg':
								imagejpeg($crop,$image_thumbnail,$jpg_quality);
								break;
							case 'png':
								imagepng($crop,$image_thumbnail,$png_compression);
								break;
						}
						//clean memory
						imagedestroy($crop);
					}//end !exist thumbnail
					//show thumbnail and link
					$one_image_thumbnail_file='.thumbs/.'.$one_image_file;//get path thumbnail
					$doc_url = ($path && $path !== '/') ? $path.'/'.$one_image_thumbnail_file : $path.$one_image_thumbnail_file;
					$image_tag[] = '
';
				} else {
					//if images aren't support by gd (not gif, jpg, jpeg, png)
					if ($imagetype=="bmp") {
                        // use getimagesize instead api_getimagesize($image); becasuse api_getimagesize doesn't support bmp files. Put here for each show, only for a few bmp files isn't heavy
						$original_image_size = getimagesize($image);
						if ($max_thumbnail_width<$original_image_size[0] || $max_thumbnail_height<$original_image_size[1]){
							$thumbnail_size=api_calculate_image_size($original_image_size[0], $original_image_size[1], $max_thumbnail_width, $max_thumbnail_height);//don't use resize_image because doesn't run with bmp files
							$image_height = $thumbnail_size['height'];
							$image_width  = $thumbnail_size['width'];
						} else {
							$image_height=$original_image_size[0];
							$image_width=$original_image_size[1];
						}
					} else {
						//example for svg files,...
						$image_width=$max_thumbnail_width;
						$image_height=$max_thumbnail_height;
					}
					$doc_url = ($path && $path !== '/') ? $path.'/'.$one_image_file : $path.$one_image_file;
					$image_tag[] = '
';
				}//end allowed image types
			}//end if exist file image
		}//end foreach
	}//end image files only
	// Creating the table
	$html_table = '';
	$i = 0;
	$count_image = count($image_tag);
	$number_iteration = ceil($count_image/$number_image);
	$p = 0;
    echo '';
	for ($k = 0; $k < $number_iteration; $k++) {
		for ($i = 0; $i < $number_image; $i++) {
			if (isset($image_tag[$p])) {
				echo '- 
                      ';
                echo '
 ';
			}
			$p++;
		}
	}
    echo '
';
}//end slide==all
/*	ONE AT A TIME VIEW */
$course_id = api_get_course_int_id();
// This is for viewing all the images in the slideshow one at a time.
if ($slide_id != 'all' && !empty($image_files_only)) {
	if (file_exists($image) && is_file($image)) {
		$image_height_width = resize_image($image, $target_width, $target_height);
		$image_height = $image_height_width[0];
		$image_width = $image_height_width[1];
		$height_width_tags = null;
		if (isset($_SESSION['image_resizing']) && $_SESSION['image_resizing'] == 'resizing') {
			$height_width_tags = 'width="'.$image_width.'" height="'.$image_height.'"';
		}
		// 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 c_id = $course_id AND path='".Database::escape_string($pathpart.$image_files_only[$slide])."'";
		$result = Database::query($sql);
		$row = Database::fetch_array($result);
		echo '';
		echo '';
		if (api_is_allowed_to_edit(null, true)) {
			$aux = explode('.', htmlspecialchars($image_files_only[$slide]));
			$ext = $aux[count($aux) - 1];
            if ($_SESSION['image_resizing'] == 'resizing') {
                $resize_info = get_lang('Resizing').'
';
                $resize_widht = $_SESSION["image_resizing_width"].' x ';
                $resize_height = $_SESSION['image_resizing_height'];
            } elseif($_SESSION['image_resizing'] != 'noresizing'){
                $resize_info = get_lang('Resizing').'
';
                $resize_widht = get_lang('Auto').' x ';
                $resize_height = get_lang('Auto');
            } else {
                $resize_info = get_lang('NoResizing').'
';
            }
            echo '';
            echo '';
            echo '
			        ';
			echo $image_files_only[$slide].'  ';
			echo $width.' x '.$height.'  ';
			echo round((filesize($image)/1024), 2).' KB';
			echo ' - '.$ext;
			echo ' | ';
			echo '
';
			echo '';
			echo '| ';
			echo $resize_info;
			echo $resize_widht;
			echo $resize_height;
			echo ' | ';
			echo '
';
		}
		echo '
';
	} else {
		Display::display_warning_message(get_lang('FileNotFound'));
	}
} else {
    if ($slide_id != 'all') {
        Display::display_warning_message(get_lang('NoDataAvailable'));
    }
}
Display :: display_footer();