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<?php |
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/** |
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* Functions and template tags for using site logos. |
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* |
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* @package Jetpack |
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*/ |
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/** |
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* Retrieve the site logo URL or ID (URL by default). Pass in the string 'id' for ID. |
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* |
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* @uses get_option() |
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* @uses esc_url_raw() |
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* @uses set_url_scheme() |
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* @return mixed The URL or ID of our site logo, false if not set |
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* @since 1.0 |
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*/ |
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function jetpack_get_site_logo( $show = 'url' ) { |
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$logo = site_logo()->logo; |
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// Return false if no logo is set |
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if ( ! isset( $logo['id'] ) || 0 == $logo['id'] ) { |
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return false; |
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} |
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// Return the ID if specified, otherwise return the URL by default |
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if ( 'id' == $show ) { |
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return $logo['id']; |
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} else { |
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return esc_url_raw( set_url_scheme( $logo['url'] ) ); |
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} |
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} |
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/** |
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* Retrieve an array of the dimensions of the Site Logo. |
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* |
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* @uses Site_Logo::theme_size() |
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* @uses get_option( 'thumbnail_size_w' ) |
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* @uses get_option( 'thumbnail_size_h' ) |
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* @uses global $_wp_additional_image_sizes; |
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* |
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* @since 3.6.0 |
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* |
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* @return array $dimensions { |
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* An array of dimensions of the Site Logo. |
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* |
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* @type string $width Width of the logo in pixels. |
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* @type string $height Height of the logo in pixels. |
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* } |
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*/ |
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function jetpack_get_site_logo_dimensions() { |
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// Get the image size to use with the logo. |
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$size = site_logo()->theme_size(); |
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// If the size is the default `thumbnail`, get its dimensions. Otherwise, get them from $_wp_additional_image_sizes |
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if ( empty( $size ) ) { |
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return false; |
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} elseif ( 'thumbnail' == $size ) { |
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$dimensions = array( |
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'width' => get_option( 'thumbnail_size_w' ), |
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'height' => get_option( 'thumbnail_size_h' ), |
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); |
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} else { |
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global $_wp_additional_image_sizes; |
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if ( ! isset( $_wp_additional_image_sizes[ $size ] ) ) { |
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return false; |
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} |
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$dimensions = array( |
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'width' => $_wp_additional_image_sizes[ $size ]['width'], |
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'height' => $_wp_additional_image_sizes[ $size ]['height'], |
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); |
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} |
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return $dimensions; |
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} |
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/** |
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* Determine if a site logo is assigned or not. |
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* |
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* @uses get_option |
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* @return boolean True if there is an active logo, false otherwise |
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*/ |
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function jetpack_has_site_logo() { |
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return site_logo()->has_site_logo(); |
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} |
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/** |
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* Output an <img> tag of the site logo, at the size specified |
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* in the theme's add_theme_support() declaration. |
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* |
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* @uses Site_Logo::logo |
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* @uses Site_Logo::theme_size() |
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* @uses jetpack_has_site_logo() |
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* @uses jetpack_is_customize_preview() |
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* @uses esc_url() |
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* @uses home_url() |
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* @uses esc_attr() |
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* @uses wp_get_attachment_image() |
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* @uses apply_filters() |
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* @since 1.0 |
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*/ |
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function jetpack_the_site_logo() { |
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$logo = site_logo()->logo; |
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$logo_id = get_theme_mod( 'custom_logo' ); // Check for WP 4.5 Site Logo |
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$logo_id = $logo_id ? $logo_id : ( isset( $logo['id'] ) ? $logo['id'] : false ); // Use WP Core logo if present, otherwise use Jetpack's. |
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$size = site_logo()->theme_size(); |
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$html = ''; |
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// If no logo is set, but we're in the Customizer, leave a placeholder (needed for the live preview). |
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if ( ! jetpack_has_site_logo() ) { |
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if ( jetpack_is_customize_preview() ) { |
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$html = sprintf( |
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'<a href="%1$s" class="site-logo-link" style="display:none;"><img class="site-logo" data-size="%2$s" /></a>', |
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esc_url( home_url( '/' ) ), |
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esc_attr( $size ) |
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); |
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} |
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} |
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// We have a logo. Logo is go. |
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else { |
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$html = sprintf( |
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'<a href="%1$s" class="site-logo-link" rel="home" itemprop="url">%2$s</a>', |
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esc_url( home_url( '/' ) ), |
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wp_get_attachment_image( |
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$logo_id, |
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$size, |
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false, |
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array( |
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'class' => "site-logo attachment-$size", |
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'data-size' => $size, |
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'itemprop' => 'logo', |
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) |
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) |
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); |
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} |
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/** |
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* Filter the Site Logo output. |
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* |
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* @module theme-tools |
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* |
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* @since 3.2.0 |
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* |
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* @param string $html Site Logo HTML output. |
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* @param array $logo Array of Site Logo details. |
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* @param string $size Size specified in add_theme_support declaration, or 'thumbnail' default. |
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*/ |
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echo apply_filters( 'jetpack_the_site_logo', $html, $logo, $size ); |
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} |
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/** |
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* Whether the site is being previewed in the Customizer. |
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* Duplicate of core function until 4.0 is released. |
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* |
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* @global WP_Customize_Manager $wp_customize Customizer instance. |
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* @return bool True if the site is being previewed in the Customizer, false otherwise. |
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*/ |
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function jetpack_is_customize_preview() { |
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global $wp_customize; |
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return is_a( $wp_customize, 'WP_Customize_Manager' ) && $wp_customize->is_preview(); |
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} |
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/** |
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* Sanitize the string of classes used for header text. |
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* Limit to A-Z,a-z,0-9,(space),(comma),_,- |
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* |
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* @return string Sanitized string of CSS classes. |
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*/ |
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function jetpack_sanitize_header_text_classes( $classes ) { |
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$classes = preg_replace( '/[^A-Za-z0-9\,\ ._-]/', '', $classes ); |
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return $classes; |
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} |
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Automattic /
jetpack
