File: /wordpress/plugins/jetpack/latest/modules/theme-tools/content-options/featured-images-fallback.php
<?php
/**
* Theme Tools: functions for Featured Images fallback.
*
* @package automattic/jetpack
*/
use Automattic\Jetpack\Post_Media\Images;
if ( ! defined( 'ABSPATH' ) ) {
exit( 0 );
}
if ( ! function_exists( 'jetpack_featured_images_fallback_get_image' ) ) {
/**
* Get one image from a specified post in the following order:
* Featured Image then first image from the_content HTML
* and filter the post_thumbnail_html
*
* @deprecated 13.9 Moved to Classic Theme Helper package.
* @param string $html The HTML for the image markup.
* @param int $post_id The post ID to check.
* @param int $post_thumbnail_id The ID of the featured image.
* @param string $size The image size to return, defaults to 'post-thumbnail'.
* @param string|array $attr Optional. Query string or array of attributes.
*
* @return string $html Thumbnail image with markup.
*/
function jetpack_featured_images_fallback_get_image( $html, $post_id, $post_thumbnail_id, $size, $attr ) {
_deprecated_function( __FUNCTION__, 'jetpack-13.9' );
$opts = jetpack_featured_images_get_settings();
if ( ! empty( $html ) || (bool) 1 !== (bool) $opts['fallback-option'] ) {
return trim( $html );
}
if ( jetpack_featured_images_should_load() ) {
if (
( true === $opts['archive'] && ( is_home() || is_archive() || is_search() ) && ! $opts['archive-option'] )
|| ( true === $opts['post'] && is_single() && ! $opts['post-option'] )
|| ! $opts['fallback-option']
) {
return trim( $html );
}
}
global $_wp_additional_image_sizes;
$args = array(
'from_thumbnail' => false,
'from_slideshow' => true,
'from_gallery' => true,
'from_attachment' => false,
);
$image = Images::get_image( $post_id, $args );
if ( ! empty( $image ) ) {
$image['width'] = '';
$image['height'] = '';
$image['crop'] = '';
if ( array_key_exists( $size, $_wp_additional_image_sizes ) ) {
$image['width'] = $_wp_additional_image_sizes[ $size ]['width'];
$image['height'] = $_wp_additional_image_sizes[ $size ]['height'];
$image['crop'] = $_wp_additional_image_sizes[ $size ]['crop'];
}
// Force `crop` to be a simple boolean, to avoid dealing with WP crop positions.
$image['crop'] = boolval( $image['crop'] );
$image_sizes = '';
$width = isset( $image['width'] ) ? intval( $image['width'] ) : null;
$height = isset( $image['height'] ) ? intval( $image['height'] ) : null;
if ( ! empty( $image['src_width'] ) && ! empty( $image['src_height'] ) && ! empty( $image['width'] ) && ! empty( $image['height'] ) ) {
$src_width = intval( $image['src_width'] );
$src_height = intval( $image['src_height'] );
// If we're aware of the source dimensions, calculate the final image height and width.
// This allows us to provide them as attributes in the `<img>` tag, to avoid layout shifts.
// It also allows us to calculate a `srcset`.
if ( $image['crop'] ) {
// If we're cropping, the final dimensions are calculated independently of each other.
$width = min( $width, $src_width );
$height = min( $height, $src_height );
} else {
// If we're not cropping, we need to preserve aspect ratio.
$dims = wp_constrain_dimensions( $src_width, $src_height, $width, $height );
$width = $dims[0];
$height = $dims[1];
}
$image_src = Images::fit_image_url( $image['src'], $width, $height );
$image_srcset = Images::generate_cropped_srcset( $image, $width, $height, true );
$image_sizes = 'min(' . $width . 'px, 100vw)';
} else {
// If we're not aware of the source dimensions, leave the size calculations to the CDN, and
// fall back to a simpler `<img>` tag without `width`/`height` or `srcset`.
$image_src = Images::fit_image_url( $image['src'], $image['width'], $image['height'] );
// Use the theme's crop setting rather than forcing to true.
$image_src = add_query_arg( 'crop', $image['crop'], $image_src );
$image_srcset = null;
$image_sizes = null;
}
$default_attr = array(
'srcset' => $image_srcset,
'sizes' => $image_sizes,
'loading' => is_singular() ? 'eager' : 'lazy',
'decoding' => 'async',
'title' => wp_strip_all_tags( get_the_title() ),
'alt' => '',
'class' => "attachment-$size wp-post-image",
);
$image_attr = wp_parse_args( $attr, $default_attr );
$hwstring = image_hwstring( $width, $height );
$html = rtrim( "<img $hwstring" );
$html .= ' src="' . esc_url( $image_src ) . '"';
foreach ( $image_attr as $name => $value ) {
if ( $value ) {
$html .= " $name=" . '"' . esc_attr( $value ) . '"';
}
}
$html .= ' />';
return trim( $html );
}
return trim( $html );
}
add_filter( 'post_thumbnail_html', 'jetpack_featured_images_fallback_get_image', 10, 5 );
}
if ( ! function_exists( 'jetpack_featured_images_fallback_get_image_src' ) ) {
/**
* Get URL of one image from a specified post in the following order:
* Featured Image then first image from the_content HTML
*
* @deprecated 13.9 Moved to Classic Theme Helper package.
* @param int $post_id The post ID to check.
* @param int $post_thumbnail_id The ID of the featured image.
* @param string $size The image size to return, defaults to 'post-thumbnail'.
*
* @return string|null $image_src The URL of the thumbnail image.
*/
function jetpack_featured_images_fallback_get_image_src( $post_id, $post_thumbnail_id, $size ) {
_deprecated_function( __FUNCTION__, 'jetpack-13.9' );
$image_src = wp_get_attachment_image_src( $post_thumbnail_id, $size );
$image_src = ( ! empty( $image_src[0] ) ) ? $image_src[0] : null;
$opts = jetpack_featured_images_get_settings();
if ( ! empty( $image_src ) || (bool) 1 !== (bool) $opts['fallback-option'] ) {
return esc_url( $image_src );
}
if ( jetpack_featured_images_should_load() ) {
if ( ( true === $opts['archive'] && ( is_home() || is_archive() || is_search() ) && ! $opts['archive-option'] )
|| ( true === $opts['post'] && is_single() && ! $opts['post-option'] ) ) {
return esc_url( $image_src );
}
}
global $_wp_additional_image_sizes;
$args = array(
'from_thumbnail' => false,
'from_slideshow' => true,
'from_gallery' => true,
'from_attachment' => false,
);
$image = Images::get_image( $post_id, $args );
if ( ! empty( $image ) ) {
$image['width'] = '';
$image['height'] = '';
$image['crop'] = '';
if ( array_key_exists( $size, $_wp_additional_image_sizes ) ) {
$image['width'] = $_wp_additional_image_sizes[ $size ]['width'];
$image['height'] = $_wp_additional_image_sizes[ $size ]['height'];
$image['crop'] = $_wp_additional_image_sizes[ $size ]['crop'];
}
$image_src = Images::fit_image_url( $image['src'], $image['width'], $image['height'] );
// Use the theme's crop setting rather than forcing to true.
$image_src = add_query_arg( 'crop', $image['crop'], $image_src );
return esc_url( $image_src );
}
return esc_url( $image_src );
}
}
if ( ! function_exists( 'jetpack_has_featured_image' ) ) {
/**
* Check if post has an image attached, including a fallback.
*
* @deprecated 13.9 Moved to Classic Theme Helper package.
* @param int $post The post ID to check.
*
* @return bool
*/
function jetpack_has_featured_image( $post = null ) {
_deprecated_function( __FUNCTION__, 'jetpack-13.9' );
return (bool) get_the_post_thumbnail( $post );
}
}
if ( ! function_exists( 'jetpack_featured_images_post_class' ) ) {
/**
* Adds custom class to the array of post classes.
*
* @deprecated 13.9 Moved to Classic Theme Helper package.
* @param array $classes Classes for the post element.
* @param array $class Optional. Comma-separated list of additional classes.
* @param array $post_id Unique The post ID to check.
*
* @return array $classes
*/
function jetpack_featured_images_post_class( $classes, $class, $post_id ) {
_deprecated_function( __FUNCTION__, 'jetpack-13.9' );
$post_password_required = post_password_required( $post_id );
$opts = jetpack_featured_images_get_settings();
if ( jetpack_has_featured_image( $post_id ) && (bool) 1 === (bool) $opts['fallback-option'] && ! is_attachment() && ! $post_password_required && 'post' === get_post_type() ) {
$classes[] = 'has-post-thumbnail';
$classes[] = 'fallback-thumbnail';
}
return $classes;
}
add_filter( 'post_class', 'jetpack_featured_images_post_class', 10, 3 );
}