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<?php
/**
* Genesis Framework.
*
* WARNING: This file is part of the core Genesis Framework. DO NOT edit this file under any circumstances.
* Please do all modifications in the form of a child theme.
*
* @package Genesis\Images
* @author StudioPress
* @license GPL-2.0-or-later
* @link https://my.studiopress.com/themes/genesis/
*/
/**
* Pull an attachment ID from a post, if one exists.
*
* @since 1.0.0
*
* @param int $index Optional. Index of which image to return from a post. Default is 0.
* @param int $post_id Optional. Post ID. Default is `get_the_ID()`.
* @return int|bool Image ID, or `false` if image with given index does not exist.
*/
function genesis_get_image_id( $index = 0, $post_id = null ) {
$image_ids = array_keys(
get_children(
array(
'post_parent' => $post_id ? $post_id : get_the_ID(),
'post_type' => 'attachment',
'post_mime_type' => 'image',
'orderby' => 'menu_order',
'order' => 'ASC',
)
)
);
if ( isset( $image_ids[ $index ] ) ) {
return $image_ids[ $index ];
}
return false;
}
/**
* Return an image pulled from the media gallery.
*
* Supported $args keys are:
*
* - format - string, default is 'html'
* - size - string, default is 'full'
* - num - integer, default is 0
* - attr - string, default is ''
* - fallback - mixed, default is 'first-attached'
*
* Applies `genesis_get_image_default_args`, `genesis_pre_get_image` and `genesis_get_image` filters.
*
* @since 1.0.0
*
* @param array|string $args Optional. Image query arguments. Default is empty array.
* @return string|bool Return image element HTML, URL of image, or `false`.
*/
function genesis_get_image( $args = array() ) {
$defaults = array(
'post_id' => null,
'format' => 'html',
'size' => 'full',
'num' => 0,
'attr' => '',
'fallback' => 'first-attached',
'context' => '',
);
/**
* A filter on the default parameters used by `genesis_get_image()`.
*
* @since unknown
*/
$defaults = apply_filters( 'genesis_get_image_default_args', $defaults, $args );
$args = wp_parse_args( $args, $defaults );
// Allow child theme to short-circuit this function.
$pre = apply_filters( 'genesis_pre_get_image', false, $args, get_post() );
if ( false !== $pre ) {
return $pre;
}
// If post thumbnail (native WP) exists, use its id.
if ( 0 === $args['num'] && has_post_thumbnail( $args['post_id'] ) ) {
$id = get_post_thumbnail_id( $args['post_id'] );
} elseif ( 'first-attached' === $args['fallback'] ) {
// Else if the first (default) image attachment is the fallback, use its id.
$id = genesis_get_image_id( $args['num'], $args['post_id'] );
} elseif ( is_int( $args['fallback'] ) ) {
// Else if fallback id is supplied, use it.
$id = $args['fallback'];
}
// If we have an id, get the HTML and URL.
if ( isset( $id ) ) {
$html = wp_get_attachment_image( $id, $args['size'], false, $args['attr'] );
list( $url ) = wp_get_attachment_image_src( $id, $args['size'], false );
} elseif ( is_array( $args['fallback'] ) ) {
// Else if fallback HTML and URL exist, use them.
$id = 0;
$html = $args['fallback']['html'];
$url = $args['fallback']['url'];
} else {
// No image.
return false;
}
// Source path, relative to the root.
$src = str_replace( home_url(), '', $url );
// Determine output.
if ( 'html' === mb_strtolower( $args['format'] ) ) {
$output = $html;
} elseif ( 'url' === mb_strtolower( $args['format'] ) ) {
$output = $url;
} else {
$output = $src;
}
// Return false if $url is blank.
if ( empty( $url ) ) {
$output = false;
}
// Return data, filtered.
return apply_filters( 'genesis_get_image', $output, $args, $id, $html, $url, $src );
}
/**
* Echo an image pulled from the media gallery.
*
* Supported $args keys are:
*
* - format - string, default is 'html', may be 'url'
* - size - string, default is 'full'
* - num - integer, default is 0
* - attr - string, default is ''
*
* @since 1.0.0
*
* @param array|string $args Optional. Image query arguments. Default is empty array.
* @return null|false Returns `false` if URL is empty.
*/
function genesis_image( $args = array() ) {
$image = genesis_get_image( $args );
if ( $image ) {
echo $image;
return null;
} else {
return false;
}
}
/**
* Return all registered image sizes arrays, including the standard sizes.
*
* Return a two-dimensional array of standard and additionally registered image sizes, with width, height and crop sub-keys.
*
* Here, the standard sizes have their sub-keys populated by pulling from the options saved in the database.
*
* @since 1.0.2
*
* @return array Two-dimensional, with `width`, `height` and `crop` sub-keys.
*/
function genesis_get_image_sizes() {
global $_wp_additional_image_sizes;
$sizes = array();
foreach ( get_intermediate_image_sizes() as $size ) {
if ( isset( $_wp_additional_image_sizes[ $size ] ) ) {
$sizes[ $size ] = array(
'width' => absint( $_wp_additional_image_sizes[ $size ]['width'] ),
'height' => absint( $_wp_additional_image_sizes[ $size ]['height'] ),
'crop' => $_wp_additional_image_sizes[ $size ]['crop'],
);
} else {
$sizes[ $size ] = array(
'width' => absint( get_option( "{$size}_size_w" ) ),
'height' => absint( get_option( "{$size}_size_h" ) ),
'crop' => (bool) get_option( "{$size}_crop" ),
);
}
}
return $sizes;
}
/**
* Callback for Customizer featured image archive size.
*
* @since 2.1.0
*
* @return array List of image sizes.
*/
function genesis_get_image_sizes_for_customizer() {
$sizes = array();
foreach ( (array) genesis_get_image_sizes() as $name => $size ) {
$sizes[ $name ] = $name . ' (' . absint( $size['width'] ) . ' × ' . absint( $size['height'] ) . ')';
}
return $sizes;
}