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