Functions WordPress 2015 theme custom

            'family' =&gt; urlencode( implode( '|', $fonts ) ),
            'subset' =&gt; urlencode( $subsets ),
        ), 'https://fonts.googleapis.com/css' );
    }

    return $fonts_url;
}
endif;

/**
 * Handles JavaScript detection.
 *
 * Adds a `js` class to the root `<html>` element when JavaScript is detected.
 *
 * @since Twenty Sixteen 1.0
 */
function twentysixteen_javascript_detection() {
    echo "&lt;script&gt;(function(html){html.className = html.className.replace(/\bno-js\b/,'js')})(document.documentElement);&lt;/script&gt;\n";
}
add_action( 'wp_head', 'twentysixteen_javascript_detection', 0 );

/**
 * Enqueues scripts and styles.
 *
 * @since Twenty Sixteen 1.0
 */
function twentysixteen_scripts() {
    // Add custom fonts, used in the main stylesheet.
    wp_enqueue_style( 'twentysixteen-fonts', twentysixteen_fonts_url(), array(), null );

    // Add Genericons, used in the main stylesheet.
    wp_enqueue_style( 'genericons', get_template_directory_uri() . '/genericons/genericons.css', array(), '3.4.1' );

    // Theme stylesheet.
    wp_enqueue_style( 'twentysixteen-style', get_stylesheet_uri() );

    // Load the Internet Explorer specific stylesheet.
    wp_enqueue_style( 'twentysixteen-ie', get_template_directory_uri() . '/css/ie.css', array( 'twentysixteen-style' ), '20160816' );
    wp_style_add_data( 'twentysixteen-ie', 'conditional', 'lt IE 10' );

    // Load the Internet Explorer 8 specific stylesheet.
    wp_enqueue_style( 'twentysixteen-ie8', get_template_directory_uri() . '/css/ie8.css', array( 'twentysixteen-style' ), '20160816' );
    wp_style_add_data( 'twentysixteen-ie8', 'conditional', 'lt IE 9' );

    // Load the Internet Explorer 7 specific stylesheet.
    wp_enqueue_style( 'twentysixteen-ie7', get_template_directory_uri() . '/css/ie7.css', array( 'twentysixteen-style' ), '20160816' );
    wp_style_add_data( 'twentysixteen-ie7', 'conditional', 'lt IE 8' );

    // Load the html5 shiv.
    wp_enqueue_script( 'twentysixteen-html5', get_template_directory_uri() . '/js/html5.js', array(), '3.7.3' );
    wp_script_add_data( 'twentysixteen-html5', 'conditional', 'lt IE 9' );

    wp_enqueue_script( 'twentysixteen-skip-link-focus-fix', get_template_directory_uri() . '/js/skip-link-focus-fix.js', array(), '20160816', true );

    if ( is_singular() &amp;&amp; comments_open() &amp;&amp; get_option( 'thread_comments' ) ) {
        wp_enqueue_script( 'comment-reply' );
    }

    if ( is_singular() &amp;&amp; wp_attachment_is_image() ) {
        wp_enqueue_script( 'twentysixteen-keyboard-image-navigation', get_template_directory_uri() . '/js/keyboard-image-navigation.js', array( 'jquery' ), '20160816' );
    }

    wp_enqueue_script( 'twentysixteen-script', get_template_directory_uri() . '/js/functions.js', array( 'jquery' ), '20160816', true );

    wp_localize_script( 'twentysixteen-script', 'screenReaderText', array(
        'expand'   =&gt; __( 'expand child menu', 'twentysixteen' ),
        'collapse' =&gt; __( 'collapse child menu', 'twentysixteen' ),
    ) );
}
add_action( 'wp_enqueue_scripts', 'twentysixteen_scripts' );

/**
 * Adds custom classes to the array of body classes.
 *
 * @since Twenty Sixteen 1.0
 *
 * @param array $classes Classes for the body element.
 * @return array (Maybe) filtered body classes.
 */
function twentysixteen_body_classes( $classes ) {
    // Adds a class of custom-background-image to sites with a custom background image.
    if ( get_background_image() ) {
        $classes[] = 'custom-background-image';
    }

    // Adds a class of group-blog to sites with more than 1 published author.
    if ( is_multi_author() ) {
        $classes[] = 'group-blog';
    }

    // Adds a class of no-sidebar to sites without active sidebar.
    if ( ! is_active_sidebar( 'sidebar-1' ) ) {
        $classes[] = 'no-sidebar';
    }

    // Adds a class of hfeed to non-singular pages.
    if ( ! is_singular() ) {
        $classes[] = 'hfeed';
    }

    return $classes;
}
add_filter( 'body_class', 'twentysixteen_body_classes' );

/**
 * Converts a HEX value to RGB.
 *
 * @since Twenty Sixteen 1.0
 *
 * @param string $color The original color, in 3- or 6-digit hexadecimal form.
 * @return array Array containing RGB (red, green, and blue) values for the given
 *               HEX code, empty array otherwise.
 */
function twentysixteen_hex2rgb( $color ) {
    $color = trim( $color, '#' );

    if ( strlen( $color ) === 3 ) {
        $r = hexdec( substr( $color, 0, 1 ).substr( $color, 0, 1 ) );
        $g = hexdec( substr( $color, 1, 1 ).substr( $color, 1, 1 ) );
        $b = hexdec( substr( $color, 2, 1 ).substr( $color, 2, 1 ) );
    } else if ( strlen( $color ) === 6 ) {
        $r = hexdec( substr( $color, 0, 2 ) );
        $g = hexdec( substr( $color, 2, 2 ) );
        $b = hexdec( substr( $color, 4, 2 ) );
    } else {
        return array();
    }

    return array( 'red' =&gt; $r, 'green' =&gt; $g, 'blue' =&gt; $b );
}

/**
 * Custom template tags for this theme.
 */
require get_template_directory() . '/inc/template-tags.php';

/**
 * Customizer additions.
 */
require get_template_directory() . '/inc/customizer.php';

/**
 * Add custom image sizes attribute to enhance responsive image functionality
 * for content images
 *
 * @since Twenty Sixteen 1.0
 *
 * @param string $sizes A source size value for use in a 'sizes' attribute.
 * @param array  $size  Image size. Accepts an array of width and height
 *                      values in pixels (in that order).
 * @return string A source size value for use in a content image 'sizes' attribute.
 */
function twentysixteen_content_image_sizes_attr( $sizes, $size ) {
    $width = $size[0];

    840 &lt;= $width &amp;&amp; $sizes = '(max-width: 709px) 85vw, (max-width: 909px) 67vw, (max-width: 1362px) 62vw, 840px';

    if ( 'page' === get_post_type() ) {
        840 &gt; $width &amp;&amp; $sizes = '(max-width: ' . $width . 'px) 85vw, ' . $width . 'px';
    } else {
        840 &gt; $width &amp;&amp; 600 &lt;= $width &amp;&amp; $sizes = '(max-width: 709px) 85vw, (max-width: 909px) 67vw, (max-width: 984px) 61vw, (max-width: 1362px) 45vw, 600px';
        600 &gt; $width &amp;&amp; $sizes = '(max-width: ' . $width . 'px) 85vw, ' . $width . 'px';
    }

    return $sizes;
}
add_filter( 'wp_calculate_image_sizes', 'twentysixteen_content_image_sizes_attr', 10 , 2 );

/**
 * Add custom image sizes attribute to enhance responsive image functionality
 * for post thumbnails
 *
 * @since Twenty Sixteen 1.0
 *
 * @param array $attr Attributes for the image markup.
 * @param int   $attachment Image attachment ID.
 * @param array $size Registered image size or flat array of height and width dimensions.
 * @return string A source size value for use in a post thumbnail 'sizes' attribute.
 */
function twentysixteen_post_thumbnail_sizes_attr( $attr, $attachment, $size ) {
    if ( 'post-thumbnail' === $size ) {
        is_active_sidebar( 'sidebar-1' ) &amp;&amp; $attr['sizes'] = '(max-width: 709px) 85vw, (max-width: 909px) 67vw, (max-width: 984px) 60vw, (max-width: 1362px) 62vw, 840px';
        ! is_active_sidebar( 'sidebar-1' ) &amp;&amp; $attr['sizes'] = '(max-width: 709px) 85vw, (max-width: 909px) 67vw, (max-width: 1362px) 88vw, 1200px';
    }
    return $attr;
}
add_filter( 'wp_get_attachment_image_attributes', 'twentysixteen_post_thumbnail_sizes_attr', 10 , 3 );

/**
 * Modifies tag cloud widget arguments to have all tags in the widget same font size.
 *
 * @since Twenty Sixteen 1.1
 *
 * @param array $args Arguments for tag cloud widget.
 * @return array A new modified arguments.
 */
function twentysixteen_widget_tag_cloud_args( $args ) {
    $args['largest'] = 1;
    $args['smallest'] = 1;
    $args['unit'] = 'em';
    return $args;
}
add_filter( 'widget_tag_cloud_args', 'twentysixteen_widget_tag_cloud_args' );

/**
* Remove Post Thumbnail
*
* Remove post thumbnail from single post but in preview
*
* @param string $thumbnail_html The thumbnail markup
*
* @return string Empty string or the original parameter value
*/
function my_remove_post_thumbnail_html($thumbnail_html)
{
if (is_single() && !is_preview() || is_category() && !is_preview()) {
$thumbnail_html = ”;
}

return $thumbnail_html;
}
add_filter(‘post_thumbnail_html’, ‘my_remove_post_thumbnail_html’);