CHIEFSOFT\ameye
151 lines
3.8 KiB
PHP
151 lines
3.8 KiB
PHP
<?php
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/**
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* Helpers Lazy Load
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*
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* @package Powerkit
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* @subpackage Modules/Helper
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*/
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/**
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* Generation placeholder.
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*
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* @param int $width Width of image.
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* @param int $height Height of image.
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* @param bool $cached Сache the result.
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*/
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function powerkit_lazy_get_image_placeholder( $width = 1, $height = 1, $cached = false ) {
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$transient = sprintf( 'pk_image_placeholder_%s_%s', $width, $height );
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$placeholder_image = $cached ? get_transient( $transient ) : false;
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if ( false === $placeholder_image ) {
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if ( function_exists( 'imagecreate') ) {
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$placeholder_code = ob_start();
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$image = imagecreate( $width, $height );
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$background = imagecolorallocatealpha( $image, 0, 0, 255, 127 );
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imagepng( $image, null, 9 );
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imagecolordeallocate( $image, $background );
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imagedestroy( $image );
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$placeholder_code = ob_get_clean();
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$placeholder_image = 'data:image/png;base64,' . base64_encode( $placeholder_code );
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} else {
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$placeholder_image = 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABAQMAAAAl21bKAAAAA1BMVEUAAP+KeNJXAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAApJREFUCNdjYAAAAAIAAeIhvDMAAAAASUVORK5CYII=';
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}
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if ( $cached ) {
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set_transient( $transient, $placeholder_image );
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}
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}
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return $placeholder_image;
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}
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/**
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* Get the available image sizes
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*/
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function powerkit_lazy_get_available_image_sizes() {
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$wais = & $GLOBALS['_wp_additional_image_sizes'];
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$sizes = array();
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$image_sizes = get_intermediate_image_sizes();
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if ( is_array( $image_sizes ) && $image_sizes ) {
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foreach ( $image_sizes as $size ) {
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if ( in_array( $size, array( 'thumbnail', 'medium', 'medium_large', 'large' ), true ) ) {
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$sizes[ $size ] = array(
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'width' => get_option( "{$size}_size_w" ),
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'height' => get_option( "{$size}_size_h" ),
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'crop' => (bool) get_option( "{$size}_crop" ),
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);
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} elseif ( isset( $wais[ $size ] ) ) {
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$sizes[ $size ] = array(
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'width' => $wais[ $size ]['width'],
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'height' => $wais[ $size ]['height'],
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'crop' => $wais[ $size ]['crop'],
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);
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}
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// Size registered, but has 0 width and height.
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if ( 0 === (int) $sizes[ $size ]['width'] || 0 === (int) $sizes[ $size ]['height'] ) {
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unset( $sizes[ $size ] );
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}
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}
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}
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return $sizes;
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}
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/**
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* Gets the data of a specific image size.
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*
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* @param string $size Name of the size.
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*/
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function powerkit_lazy_get_image_size( $size ) {
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if ( ! is_string( $size ) ) {
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return;
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}
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$sizes = powerkit_lazy_get_available_image_sizes();
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return isset( $sizes[ $size ] ) ? $sizes[ $size ] : false;
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}
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/**
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* Tries to convert an attachment IMG attr into a post object.
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*
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* @param string $attr The img attr.
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*/
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function powerkit_lazy_attachment_attr_to_object( $attr ) {
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if ( ! isset( $attr['src'] ) ) {
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return;
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}
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// Set ID by class.
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if ( isset( $attr['class'] ) && preg_match( '/wp-image-(\d*)/i', $attr['class'], $matche ) ) {
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return array(
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'ID' => $matche[1],
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);
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}
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// Remove the thumbnail size.
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$src = preg_replace( '~-[0-9]+x[0-9]+(?=\..{2,6})~', '', $attr['src'] );
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// Set ID by src.
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return array(
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'ID' => attachment_url_to_postid( $src ),
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);
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}
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/**
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* Tries to convert an attachment IMG attr into a image size.
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*
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* @param string $attr The img attr.
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* @param string $content The all content.
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*/
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function powerkit_attachment_attr_to_size( $attr, $content = false ) {
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if ( ! isset( $attr['class'] ) ) {
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return;
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}
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// Set ID by class.
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if ( preg_match( '/size-(\S*)/i', $attr['class'], $matche ) ) {
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return $matche[1];
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}
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// Set ID by parent class.
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if ( isset( $attr['src'] ) && $attr['src'] ) {
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$clear_content = str_replace( array( "\r\n", "\r", "\n" ), '', $content );
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if ( preg_match( '#<figure class="[^>]*size-(\S*)">[^<]*<img[^>]*src="' . $attr['src'] . '"[^>]*>#', $clear_content, $matche ) ) {
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return $matche[1];
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}
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}
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}
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