function GCD($x, $y)
{
if ($x % $y === 0) {
return $y;
}
return GCD($y, $x % $y);
}
/**
* @param $n
* @param $k
* @return float
*/
function C($n, $k)
{
$numerator = 1;
$denominator = 1;
if ($k > $n / 2) {
$k = $n - $k;
}
for ($i = $k; $i; $i--) {
$toMul = $n - $k + $i;
$toDiv = $i;
$g = GCD($toMul, $toDiv);
$toMul /= $g;
$toDiv /= $g;
$g = GCD($numerator, $toDiv);
$numerator /= $g;
$toDiv /= $g;
$g = GCD($toMul, $denominator);
$toMul /= $g;
$toDiv /= $g;
$numerator *= $toMul;
$denominator *= $toDiv;
}
return $numerator / $denominator;
}
/**
* Image View
*
* Display's an uploaded image & it's comments
*
* @access public
* @return void
*/
function image()
{
// Retrieve the image if it exists or redirect to gallery
$image = $this->gallery->get_gallery_item(array('gallery_slug' => $this->uri->segment(3, '')));
if (!$image) {
$this->session->set_flashdata('message', 'The image you requested was not found');
redirect('gallery');
}
// Format Timezone
$image->date = $this->ClanCMS->timezone($image->date);
// Aspect ratio
if ($image->width && $image->height) {
// Determine GCD
function GCD($a, $b)
{
while ($b != 0) {
$remainder = $a % $b;
$a = $b;
$b = $remainder;
}
return abs($a);
}
// Compute AR
$a = $image->width;
$b = $image->height;
$gcd = GCD($a, $b);
$a = $a / $gcd;
$b = $b / $gcd;
$image->ratio = $a . ":" . $b;
}
// Retrieve Uploader's avatar
$user = $this->users->get_user(array('user_name' => $image->uploader));
$image->avatar = $user->user_avatar;
$image->uploader_id = $user->user_id;
// Retrieve uploader's group
if ($group = $this->users->get_group(array('group_id' => $user->group_id))) {
// Group exist's assign user group
$image->group = $group->group_title;
} else {
// Group doesn't exist, assign user group
$image->group = '';
}
// Retrieve our forms
$desc = $this->input->post('add_desc');
$comment = $this->input->post('add_comment');
// Someone is updating the description
if ($desc && $this->user->logged_in()) {
// Set form validation rules
$this->form_validation->set_rules('desc', 'Description', 'trim|required');
// Form validation passed & checked if gallery allows comments, so continue
if (!$this->form_validation->run() == FALSE) {
// Set up our data
$data = array('desc' => $this->input->post('desc'));
// Insert the comment into the database
$this->gallery->edit_desc($data, $image->gallery_id);
// Alert the user
$this->session->set_flashdata('message', 'Your description has been edited!');
// Redirect the user
redirect('gallery/image/' . $image->gallery_slug);
}
}
// Check if add comment has been posted and check if the user is logged in
if ($comment && $this->user->logged_in()) {
// Set form validation rules
$this->form_validation->set_rules('comment', 'Comment', 'trim|required');
// Form validation passed & checked if gallery allows comments, so continue
if (!$this->form_validation->run() == FALSE) {
// Add to comments count
$count = $image->comments;
$count = $count + 1;
// Set up the data
$data = array('comments' => $count);
// Update comment count
$this->gallery->edit_desc($data, $image->gallery_id);
// Set up our data
$data = array('gallery_id' => $image->gallery_id, 'user_id' => $this->session->userdata('user_id'), 'comment_title' => $this->input->post('comment'), 'comment_date' => mdate('%Y-%m-%d %H:%i:%s', now()));
// Insert the comment into the database
$this->gallery->insert_comment($data);
// Alert the user
$this->session->set_flashdata('message', 'Your comment has been posted!');
// Redirect the user
redirect('gallery/image/' . $image->gallery_slug);
}
}
// Retrieve the current page
$page = $this->uri->segment(5, '');
// Check if page exists
if ($page == '') {
// Page doesn't exist, assign it
$page = 1;
}
//Set up the variables
$per_page = 15;
$total_results = $this->gallery->count_comments(array('gallery_id' => $image->gallery_id));
$offset = ($page - 1) * $per_page;
$pages->total_pages = 0;
// Create the pages
for ($i = 1; $i < $total_results / $per_page + 1; $i++) {
// Itterate pages
$pages->total_pages++;
}
// Check if there are no results
if ($total_results == 0) {
// Assign total pages
$pages->total_pages = 1;
}
// Set up pages
$pages->current_page = $page;
$pages->pages_left = 9;
$pages->first = (bool) ($pages->current_page > 5);
$pages->previous = (bool) ($pages->current_page > '1');
$pages->next = (bool) ($pages->current_page != $pages->total_pages);
$pages->before = array();
$pages->after = array();
// Check if the current page is towards the end
if ($pages->current_page + 5 < $pages->total_pages) {
// Current page is not towards the end, assign start
$start = $pages->current_page - 4;
} else {
// Current page is towards the end, assign start
$start = $pages->current_page - $pages->pages_left + ($pages->total_pages - $pages->current_page);
}
// Assign end
$end = $pages->current_page + 1;
// Loop through pages before the current page
for ($page = $start; $page < $pages->current_page; $page++) {
// Check if the page is vaild
if ($page > 0) {
// Page is valid, add it the pages before, increment pages left
$pages->before = array_merge($pages->before, array($page));
$pages->pages_left--;
}
}
// Loop through pages after the current page
for ($page = $end; $pages->pages_left > 0 && $page <= $pages->total_pages; $page++) {
// Add the page to pages after, increment pages left
$pages->after = array_merge($pages->after, array($page));
$pages->pages_left--;
}
// Set up pages
$pages->last = (bool) ($pages->total_pages - 5 > $pages->current_page);
$comments = $this->gallery->get_comments($per_page, $offset, array('gallery_id' => $image->gallery_id));
// Check if comments exist
if ($comments) {
// Comments exist, loop through each comment
foreach ($comments as $comment) {
// Retrieve the user
if ($user = $this->users->get_user(array('user_id' => $comment->user_id))) {
// User exists, assign comment author & comment avatar
$comment->author = $user->user_name;
$comment->avatar = $user->user_avatar;
} else {
// User doesn't exist, assign comment author & comment avatar
$comment->author = '';
$comment->avatar = '';
}
// Format and assign the comment date
$comment->date = $this->ClanCMS->timezone($comment->comment_date);
// Do not count uploader comments
if ($comment->author == $image->uploader) {
// Assign 0 for count
$comment->count = 0;
} else {
// Give a count point
$comment->count = 1;
}
// Create array to hold comment points
$count[] = $comment->count;
}
// Assign comment points
$image->comments = array_sum($count);
}
// Fetch active user
$user = $this->users->get_user(array('user_id' => $this->session->userdata('user_id')));
// Query tracking table
if ($user) {
// set up data
$data = array('controller_name' => $this->uri->segment(1), 'controller_method' => $this->uri->segment(2), 'controller_item_id' => $this->uri->segment(3), 'user_id' => $user->user_id);
// Check user against tracker
$track = $this->tracker->check($data);
if (!$track) {
// Object is new to user
$this->tracker->track($data);
}
}
// Count views
if ($user && !$track) {
// Hot update view count
$views = $image->views + 1;
$image->views = $views;
$this->db->where('gallery_id', $image->gallery_id)->update('gallery', array('views' => $image->views));
}
// Add FB share link
$image->fblink = 'http://www.facebook.com/sharer.php?s=100&p[title]=' . BASE_URL . 'gallery/image/' . $image->gallery_slug . '&p[summary]=' . $image->desc . '&p[url]=' . BASE_URL . '&p[images][0]=' . IMAGES . 'gallery/thumbs/' . $image->image;
// Create references
$this->data->image =& $image;
$this->data->comments =& $comments;
$this->data->pages =& $pages;
$this->data->user =& $user;
// Load the gallery view
$this->load->view(THEME . 'image', $this->data);
}
