first commit

2023-11-30 13:20:54 -05:00
commit e9e5c0546c
5833 changed files with 1801865 additions and 0 deletions
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+<?php
+/**
+ * Helpers Lazy Load
+ *
+ * @package    Powerkit
+ * @subpackage Modules/Helper
+ */
+
+/**
+ * Generation placeholder.
+ *
+ * @param int  $width  Width of image.
+ * @param int  $height Height of image.
+ * @param bool $cached Сache the result.
+ */
+function powerkit_lazy_get_image_placeholder( $width = 1, $height = 1, $cached = false ) {
+
+	$transient = sprintf( 'pk_image_placeholder_%s_%s', $width, $height );
+
+	$placeholder_image = $cached ? get_transient( $transient ) : false;
+
+	if ( false === $placeholder_image ) {
+
+		if ( function_exists( 'imagecreate') ) {
+			$placeholder_code = ob_start();
+
+			$image      = imagecreate( $width, $height );
+			$background = imagecolorallocatealpha( $image, 0, 0, 255, 127 );
+
+			imagepng( $image, null, 9 );
+			imagecolordeallocate( $image, $background );
+			imagedestroy( $image );
+
+			$placeholder_code = ob_get_clean();
+
+			$placeholder_image = 'data:image/png;base64,' . base64_encode( $placeholder_code );
+
+		} else {
+			$placeholder_image = 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABAQMAAAAl21bKAAAAA1BMVEUAAP+KeNJXAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAApJREFUCNdjYAAAAAIAAeIhvDMAAAAASUVORK5CYII=';
+		}
+
+		if ( $cached ) {
+			set_transient( $transient, $placeholder_image );
+		}
+	}
+
+	return $placeholder_image;
+}
+
+/**
+ * Get the available image sizes
+ */
+function powerkit_lazy_get_available_image_sizes() {
+	$wais = & $GLOBALS['_wp_additional_image_sizes'];
+
+	$sizes       = array();
+	$image_sizes = get_intermediate_image_sizes();
+
+	if ( is_array( $image_sizes ) && $image_sizes ) {
+		foreach ( $image_sizes as $size ) {
+			if ( in_array( $size, array( 'thumbnail', 'medium', 'medium_large', 'large' ), true ) ) {
+				$sizes[ $size ] = array(
+					'width'  => get_option( "{$size}_size_w" ),
+					'height' => get_option( "{$size}_size_h" ),
+					'crop'   => (bool) get_option( "{$size}_crop" ),
+				);
+			} elseif ( isset( $wais[ $size ] ) ) {
+				$sizes[ $size ] = array(
+					'width'  => $wais[ $size ]['width'],
+					'height' => $wais[ $size ]['height'],
+					'crop'   => $wais[ $size ]['crop'],
+				);
+			}
+
+			// Size registered, but has 0 width and height.
+			if ( 0 === (int) $sizes[ $size ]['width'] || 0 === (int) $sizes[ $size ]['height'] ) {
+				unset( $sizes[ $size ] );
+			}
+		}
+	}
+
+	return $sizes;
+}
+
+/**
+ * Gets the data of a specific image size.
+ *
+ * @param string $size Name of the size.
+ */
+function powerkit_lazy_get_image_size( $size ) {
+	if ( ! is_string( $size ) ) {
+		return;
+	}
+
+	$sizes = powerkit_lazy_get_available_image_sizes();
+
+	return isset( $sizes[ $size ] ) ? $sizes[ $size ] : false;
+}
+
+/**
+ * Tries to convert an attachment IMG attr into a post object.
+ *
+ * @param string $attr The img attr.
+ */
+function powerkit_lazy_attachment_attr_to_object( $attr ) {
+	if ( ! isset( $attr['src'] ) ) {
+		return;
+	}
+
+	// Set ID by class.
+	if ( isset( $attr['class'] ) && preg_match( '/wp-image-(\d*)/i', $attr['class'], $matche ) ) {
+		return array(
+			'ID' => $matche[1],
+		);
+	}
+
+	// Remove the thumbnail size.
+	$src = preg_replace( '~-[0-9]+x[0-9]+(?=\..{2,6})~', '', $attr['src'] );
+
+	// Set ID by src.
+	return array(
+		'ID' => attachment_url_to_postid( $src ),
+	);
+}
+
+/**
+ * Tries to convert an attachment IMG attr into a image size.
+ *
+ * @param string $attr    The img attr.
+ * @param string $content The all content.
+ */
+function powerkit_attachment_attr_to_size( $attr, $content = false ) {
+	if ( ! isset( $attr['class'] ) ) {
+		return;
+	}
+
+	// Set ID by class.
+	if ( preg_match( '/size-(\S*)/i', $attr['class'], $matche ) ) {
+		return $matche[1];
+	}
+
+	// Set ID by parent class.
+	if ( isset( $attr['src'] ) && $attr['src'] ) {
+		$clear_content = str_replace( array( "\r\n", "\r", "\n" ), '', $content );
+
+		if ( preg_match( '#<figure class="[^>]*size-(\S*)">[^<]*<img[^>]*src="' . $attr['src'] . '"[^>]*>#', $clear_content, $matche ) ) {
+			return $matche[1];
+		}
+	}
+}