widget randomly displays a snapshot of websites from your blogroll.
Version: 1.0.7
Author: Denis Balencourt
Author URI: http://www.balencourt.com/blog/snap-my-roll
*/
include('functions.php');
function add_javascript(){
$js_url = get_option('siteurl') . '/wp-content/plugins/'. dirname( plugin_basename(__FILE__)) . '/js/';
wp_enqueue_script('jquery');
wp_enqueue_script('innerfade',$js_url."jquery.innerfade.js",array('jquery'),'1.0' );
}
function snap_my_roll($size,$key,$category,$timeout){
global $wpdb;
if($key == 'Enter your key'){
echo 'Please register to websnapr';
return;
}
//Transform seconds into milliseconds
if($timeout < 1){
$timeout = 1000;
}else{
$timeout = $timeout * 1000;
}
//Define dir & path to plugin components
$snap_my_roll_url = dirname( __FILE__ ) . '/';
// Create SQL request & get links from DB according to category
if($category){
$my_query = "SELECT ".$wpdb->prefix."links.link_name, ".$wpdb->prefix."links.link_url FROM ".$wpdb->prefix."term_relationships, ".$wpdb->prefix."links WHERE link_visible = 'Y' and ".$wpdb->prefix."links.link_id = ".$wpdb->prefix."term_relationships.object_id and ".$wpdb->prefix."term_relationships.term_taxonomy_id = $category";
}else{
$my_query = "SELECT ".$wpdb->prefix."links.link_name, ".$wpdb->prefix."links.link_url FROM ".$wpdb->prefix."links WHERE link_visible = 'Y'";
}
$links = $wpdb->get_results($my_query, OBJECT);
//Rand the the array of links and slice it to 20 elements to reduce loading time and ensure that all links have a chance
if($links){
shuffle($links);
if (count($links)>20){
$links = array_slice($links,0,20);
}
//build the javascript
echo '\n";
//determine upload directory
$directory = array();
$directory = wp_upload_dir();
$charset = get_option('blog_charset');
if (!is_writable($directory['basedir']. '/')){
echo("Wordpress upload directory is not writable");
return;
}
//create error image to compare them with file downloaded
$queued = imagecreatefromjpeg($snap_my_roll_url.$size."queued.jpg");
$exceeded = imagecreatefrompng($snap_my_roll_url.$size."exceeded.png");
//echo "$snap_my_roll_url$size"."queued.jpg";
//lets print the list of images
echo '
'."\n";
foreach($links as $link){
$img_file = $directory['basedir'] .'/'.sanitize_filename($link->link_url."_".$size.".png");
$img_url = $directory['baseurl'] .'/'.sanitize_filename($link->link_url."_".$size.".png");
// If file does not exist or is older than 10 days update it
if(!file_exists($img_file) || time() - fileatime($img_file) > 864000 ){
$f = curl_get_file_contents('http://images.websnapr.com/?size='.$size.'&key='.$key.'&url='.rawurlencode($link->link_url));
$i = imagecreatefromstring($f);
if(!imagecompare($i,$queued) && !imagecompare($i,$exceeded)){
imagepng($i,$img_file,8);
}else{
continue;
}
}
echo '
