/**
* Used to check if we have to LazyLoad this or not
*
* @since 2.5.5 Don't apply LazyLoad on images from WP Retina x2
* @since 2.5 Don't apply LazyLoad on all images from LayerSlider
* @since 2.4.2 Don't apply LazyLoad on all images from Media Grid
* @since 2.3.11 Don't apply LazyLoad on all images from Timthumb
* @since 2.3.10 Don't apply LazyLoad on all images from Revolution Slider & Justified Image Grid
* @since 2.3.8 Don't apply LazyLoad on captcha from Really Simple CAPTCHA
* @since 2.2
*/
function __rocket_lazyload_replace_callback($matches)
{
// Don't apply LazyLoad on images from WP Retina x2
if (function_exists('wr2x_picture_rewrite')) {
if (wr2x_get_retina(trailingslashit(ABSPATH) . wr2x_get_pathinfo_from_image_src(trim($matches[2], '"')))) {
return $matches[0];
}
}
// TO DO - improve this code with a preg_match - it's ugly!!!!
if (strpos($matches[1] . $matches[3], 'data-no-lazy=') === false && strpos($matches[1] . $matches[3], 'data-lazy-original=') === false && strpos($matches[1] . $matches[3], 'data-lazy-src=') === false && strpos($matches[1] . $matches[3], 'data-lazysrc=') === false && strpos($matches[1] . $matches[3], 'data-src=') === false && strpos($matches[1] . $matches[3], 'data-lazyload=') === false && strpos($matches[1] . $matches[3], 'data-bgposition=') === false && strpos($matches[2], '/wpcf7_captcha/') === false && strpos($matches[2], 'timthumb.php?src') === false && strpos($matches[1] . $matches[3], 'data-envira-src=') === false && strpos($matches[1] . $matches[3], 'fullurl=') === false && strpos($matches[1] . $matches[3], 'lazy-slider-img=') === false && strpos($matches[1] . $matches[3], 'srcset=') === false) {
/**
* Filter the LazyLoad placeholder on src attribute
*
* @since 2.6
*
* @param string Output that will be printed
*/
$placeholder = apply_filters('rocket_lazyload_placeholder', 'data:image/gif;base64,R0lGODdhAQABAPAAAP///wAAACwAAAAAAQABAEACAkQBADs=');
$html = sprintf('<img%1$s src="%4$s" data-lazy-src=%2$s%3$s><noscript><img%1$s src=%2$s%3$s></noscript>', $matches[1], $matches[2], $matches[3], $placeholder);
/**
* Filter the LazyLoad HTML output on images
*
* @since 2.3.8
*
* @param string $html Output that will be printed
*/
$html = apply_filters('rocket_lazyload_html', $html, true);
return $html;
} else {
return $matches[0];
}
}
function wr2x_from_url_to_system($url)
{
$img_pathinfo = wr2x_get_pathinfo_from_image_src($url);
$filepath = trailingslashit(wr2x_get_wordpress_root()) . $img_pathinfo;
if (file_exists($filepath)) {
return $filepath;
}
$filepath = trailingslashit(wr2x_get_upload_root()) . $img_pathinfo;
if (file_exists($filepath)) {
return $filepath;
}
return null;
}
function wr2x_html_rewrite($buffer)
{
if (!isset($buffer) || trim($buffer) === '') {
return $buffer;
}
$doc = new DOMDocument();
@$doc->loadHTML($buffer);
// = ($doc->strictErrorChecking = false;)
$imageTags = $doc->getElementsByTagName('img');
foreach ($imageTags as $tag) {
//$img_info = parse_url( $tag->getAttribute('src') );
//$img_pathinfo = ltrim( $img_info['path'], '/' );
$img_pathinfo = wr2x_get_pathinfo_from_image_src($tag->getAttribute('src'));
$filepath = trailingslashit(ABSPATH) . $img_pathinfo;
$potential_retina = wr2x_get_retina($filepath);
if ($potential_retina != null) {
wr2x_log("Rewrite '{$filepath}' to '{$potential_retina}'.");
$retina_pathinfo = ltrim(str_replace(ABSPATH, "", $potential_retina), '/');
$buffer = str_replace($img_pathinfo, $retina_pathinfo, $buffer);
}
}
return $buffer;
}
