functions.php

<?php
/**
 * Beyond 2016 Theme Functions
 */

//Globals
$themeinfo = wp_get_theme();

define( 'BEYOND2016_PATH', get_template_directory( __FILE__ ) );
define( 'BEYOND2016_URL', get_template_directory_uri( __FILE__ ) );
define( 'BEYOND2016_VERSION', $themeinfo->get( 'Version') );

/*
 * Enqueue the main.css
 *
 */
add_action( 'wp_enqueue_scripts', 'beyond2016_theme_enqueue_styles' );

function beyond2016_theme_enqueue_styles() {

    // Enqueue main.css either minified or expanded
    // based on WP_DEBUG
    if (WP_DEBUG == true) :
      $random = mt_rand();
      wp_enqueue_style( 'beyond2016-main', get_template_directory_uri() . '/assets/styles/build/main.css', '', $random );
    else :
      wp_enqueue_style( 'beyond2016-main', get_template_directory_uri() . '/main.css', '', BEYOND2016_VERSION, all );
    endif;
}

// ORIGINAL functions

/**
 * Beyond 2016 only works in WordPress 4.4 or later.
 */
if ( version_compare( $GLOBALS['wp_version'], '4.4-alpha', '<' ) ) {
	require get_template_directory() . '/inc/back-compat.php';
}

if ( ! function_exists( 'beyond2016_setup' ) ) :
/**
 * Sets up theme defaults and registers support for various WordPress features.
 *
 * Note that this function is hooked into the after_setup_theme hook, which
 * runs before the init hook. The init hook is too late for some features, such
 * as indicating support for post thumbnails.
 *
 * Create your own beyond2016_setup() function to override in a child theme.
 *
 * @since Beyond 2016 1.0
 */
function beyond2016_setup() {
	/*
	 * Make theme available for translation.
	 * Translations can be filed in the /languages/ directory.
	 * If you're building a theme based on Beyond 2016, use a find and replace
	 * to change 'beyond2016' to the name of your theme in all the template files
	 */
	load_theme_textdomain( 'beyond2016', get_template_directory() . '/languages' );

	// Add default posts and comments RSS feed links to head.
	add_theme_support( 'automatic-feed-links' );

	/*
	 * Let WordPress manage the document title.
	 * By adding theme support, we declare that this theme does not use a
	 * hard-coded <title> tag in the document head, and expect WordPress to
	 * provide it for us.
	 */
	add_theme_support( 'title-tag' );

	/*
	 * Enable support for Post Thumbnails on posts and pages.
	 *
	 * @link http://codex.wordpress.org/Function_Reference/add_theme_support#Post_Thumbnails
	 */
	add_theme_support( 'post-thumbnails' );
	set_post_thumbnail_size( 1200, 0, true );

	// This theme uses wp_nav_menu() in two locations.
	register_nav_menus( array(
		'primary' => __( 'Primary Menu', 'beyond2016' ),
		'social'  => __( 'Social Links Menu', 'beyond2016' ),
	) );

	/*
	 * Switch default core markup for search form, comment form, and comments
	 * to output valid HTML5.
	 */
	add_theme_support( 'html5', array(
		'search-form',
		'comment-form',
		'comment-list',
		'gallery',
		'caption',
	) );

	/*
	 * Enable support for Post Formats.
	 *
	 * See: https://codex.wordpress.org/Post_Formats
	 */
	add_theme_support( 'post-formats', array(
		//'aside',
		'image',
		'video',
		//'quote',
		//'link',
		'gallery',
		//'status',
		'audio',
		//'chat',
	) );

	/*
	 * This theme styles the visual editor to resemble the theme style,
	 * specifically font, colors, icons, and column width.
	 */
	add_editor_style( 'assets/styles/editor-style.css' );

}
endif; // beyond2016_setup
add_action( 'after_setup_theme', 'beyond2016_setup' );

/**
 * Sets the content width in pixels, based on the theme's design and stylesheet.
 *
 * Priority 0 to make it available to lower priority callbacks.
 *
 * @global int $content_width
 *
 * @since Beyond 2016 1.0
 */
function beyond2016_content_width() {
	if ( ! empty( $GLOBALS['content_width'] ) ) {
		$GLOBALS['content_width'] = apply_filters( 'beyond2016_content_width', 840 );
	}
}
add_action( 'after_setup_theme', 'beyond2016_content_width', 0 );

/**
 * Registers a widget area.
 *
 * @link https://developer.wordpress.org/reference/functions/register_sidebar/
 *
 * @since Beyond 2016 1.0
 */
function beyond2016_widgets_init() {
	register_sidebar( array(
		'name'          => __( 'Sidebar', 'beyond2016' ),
		'id'            => 'sidebar-1',
		'description'   => __( 'Add widgets here to appear in your sidebar.', 'beyond2016' ),
		'before_widget' => '<section id="%1$s" class="widget %2$s">',
		'after_widget'  => '</section>',
		'before_title'  => '<h2 class="widget-title">',
		'after_title'   => '</h2>',
	) );

	register_sidebar( array(
		'name'          => __( 'Content Bottom 1', 'beyond2016' ),
		'id'            => 'sidebar-2',
		'description'   => __( 'Appears at the bottom of the content on posts and pages.', 'beyond2016' ),
		'before_widget' => '<section id="%1$s" class="widget %2$s">',
		'after_widget'  => '</section>',
		'before_title'  => '<h2 class="widget-title">',
		'after_title'   => '</h2>',
	) );

	register_sidebar( array(
		'name'          => __( 'Content Bottom 2', 'beyond2016' ),
		'id'            => 'sidebar-3',
		'description'   => __( 'Appears at the bottom of the content on posts and pages.', 'beyond2016' ),
		'before_widget' => '<section id="%1$s" class="widget %2$s">',
		'after_widget'  => '</section>',
		'before_title'  => '<h2 class="widget-title">',
		'after_title'   => '</h2>',
	) );
}
add_action( 'widgets_init', 'beyond2016_widgets_init' );

if ( ! function_exists( 'beyond2016_fonts_url' ) ) :
/**
 * Register Google fonts for Beyond 2016.
 *
 * Create your own beyond2016_fonts_url() function to override in a child theme.
 *
 * @since Beyond 2016 1.0
 *
 * @return string Google fonts URL for the theme.
 */
function beyond2016_fonts_url() {
	$fonts_url = '';
	$fonts     = array();
	$subsets   = 'latin,latin-ext';

	/* translators: If there are characters in your language that are not supported by Merriweather, translate this to 'off'. Do not translate into your own language. */
	if ( 'off' !== _x( 'on', 'Merriweather font: on or off', 'beyond2016' ) ) {
		$fonts[] = 'Merriweather:400,700,900,400italic,700italic,900italic';
	}

	/* translators: If there are characters in your language that are not supported by Montserrat, translate this to 'off'. Do not translate into your own language. */
	if ( 'off' !== _x( 'on', 'Montserrat font: on or off', 'beyond2016' ) ) {
		$fonts[] = 'Montserrat:400,700';
	}

	/* translators: If there are characters in your language that are not supported by Inconsolata, translate this to 'off'. Do not translate into your own language. */
	if ( 'off' !== _x( 'on', 'Inconsolata font: on or off', 'beyond2016' ) ) {
		$fonts[] = 'Inconsolata:400';
	}

	if ( $fonts ) {
		$fonts_url = add_query_arg( array(
			'family' => urlencode( implode( '|', $fonts ) ),
			'subset' => 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 Beyond 2016 1.0
 */
function beyond2016_javascript_detection() {
	echo "<script>(function(html){html.className = html.className.replace(/\bno-js\b/,'js')})(document.documentElement);</script>\n";
}
add_action( 'wp_head', 'beyond2016_javascript_detection', 0 );

/**
 * Enqueues scripts and styles.
 *
 * @since Beyond 2016 1.0
 */
function beyond2016_scripts() {
	// Add custom fonts, used in the main stylesheet.
	wp_enqueue_style( 'beyond2016-fonts', beyond2016_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( 'beyond2016-style', get_stylesheet_uri() );

	// Load the Internet Explorer specific stylesheet.
	wp_enqueue_style( 'beyond2016-ie', get_template_directory_uri() . '/assets/styles/ie.css', array( 'beyond2016-style' ), '20150825' );
	wp_style_add_data( 'beyond2016-ie', 'conditional', 'lt IE 10' );

	// Load the Internet Explorer 8 specific stylesheet.
	wp_enqueue_style( 'beyond2016-ie8', get_template_directory_uri() . '/assets/styles/ie8.css', array( 'beyond2016-style' ), '20150825' );
	wp_style_add_data( 'beyond2016-ie8', 'conditional', 'lt IE 9' );

	// Load the Internet Explorer 7 specific stylesheet.
	wp_enqueue_style( 'beyond2016-ie7', get_template_directory_uri() . '/assets/styles/ie7.css', array( 'beyond2016-style' ), '20150825' );
	wp_style_add_data( 'beyond2016-ie7', 'conditional', 'lt IE 8' );

	// Load the html5 shiv.
	wp_enqueue_script( 'beyond2016-html5', get_template_directory_uri() . '/assets/js/html5.js', array(), '3.7.3' );
	wp_script_add_data( 'beyond2016-html5', 'conditional', 'lt IE 9' );

	wp_enqueue_script( 'beyond2016-skip-link-focus-fix', get_template_directory_uri() . '/assets/js/skip-link-focus-fix.js', array(), '20150825', true );

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

	if ( is_singular() && wp_attachment_is_image() ) {
		wp_enqueue_script( 'beyond2016-keyboard-image-navigation', get_template_directory_uri() . '/assets/js/keyboard-image-navigation.js', array( 'jquery' ), '20150825' );
	}

	wp_enqueue_script( 'beyond2016-script', get_template_directory_uri() . '/assets/js/functions.js', array( 'jquery' ), '20150825', true );

	wp_localize_script( 'beyond2016-script', 'screenReaderText', array(
		'expand'   => __( 'expand child menu', 'beyond2016' ),
		'collapse' => __( 'collapse child menu', 'beyond2016' ),
	) );
}
add_action( 'wp_enqueue_scripts', 'beyond2016_scripts' );

/**
 * Adds custom classes to the array of body classes.
 *
 * @since Beyond 2016 1.0
 *
 * @param array $classes Classes for the body element.
 * @return array (Maybe) filtered body classes.
 */
function beyond2016_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';
	}

  $headeralignment = get_theme_mod( 'header_alignment' );
  $headerlayout = get_theme_mod( 'header_layout' );
  $headerimgpos = get_theme_mod( 'header_image_position' );

  switch ($headeralignment) {
    case '0' :
     $classes[] = 'header-left';
     break;
    case '1' :
     $classes[] = 'header-center';
     break;
    case '2' :
     $classes[] = 'header-right';
     break;
    default :
     $classes[] = 'header-left';
  }

  switch ($headerimgpos) {
    case '0' :
     $classes[] = 'header-image-above';
     break;
    case '1' :
     $classes[] = 'header-image-below';
     break;
    case '2' :
     $classes[] = 'header-image-behind';
     break;
    default :
     $classes[] = 'header-image-below';
  }

	return $classes;
}
add_filter( 'body_class', 'beyond2016_body_classes' );

/**
 * Converts a HEX value to RGB.
 *
 * @since Beyond 2016 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 beyond2016_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' => $r, 'green' => $g, 'blue' => $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 Beyond 2016 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 beyond2016_content_image_sizes_attr( $sizes, $size ) {
	$width = $size[0];

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

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

	return $sizes;
}
add_filter( 'wp_calculate_image_sizes', 'beyond2016_content_image_sizes_attr', 10 , 2 );

/**
 * Add custom image sizes attribute to enhance responsive image functionality
 * for post thumbnails
 *
 * @since Beyond 2016 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 beyond2016_post_thumbnail_sizes_attr( $attr, $attachment, $size ) {
	if ( 'post-thumbnail' === $size ) {
		is_active_sidebar( 'sidebar-1' ) && $attr['sizes'] = '(max-width: 709px) 85vw, (max-width: 909px) 67vw, (max-width: 984px) 60vw, (max-width: 1362px) 62vw, 840px';
		! is_active_sidebar( 'sidebar-1' ) && $attr['sizes'] = '(max-width: 709px) 85vw, (max-width: 909px) 67vw, (max-width: 1362px) 88vw, 1200px';
	}
	return $attr;
}
add_filter( 'wp_get_attachment_image_attributes', 'beyond2016_post_thumbnail_sizes_attr', 10 , 3 );


/*Add Custom Functions */

include_once(get_template_directory() . '/inc/beyond2016-functions.php');
include_once(get_template_directory() . '/inc/metaboxes.php');
include_once(get_template_directory() . '/inc/admin/editor-styles.php');
include_once(get_template_directory() . '/inc/helper-functions.php');


function ua_add_meta_boxes($post_type, $post){
	global $wp_meta_boxes;
	if(!isset($wp_meta_boxes[$post_type]['normal']['core']['authordiv'])) return;

	// Change the callback
	//$wp_meta_boxes[$post_type]['normal']['core']['authordiv']['callback'] = 'my_callback_authordiv_html';

	// Or hook into the dropdown html created Html
	add_filter('wp_dropdown_users', 'ua_extend_metbox_authordiv', 10, 1);
}
add_action('add_meta_boxes', 'ua_add_meta_boxes', 5, 2);

function my_callback_authordiv_html(){
	// copy the default select stuff and add some more HTML of our own
	?>

	<p>Testing!</p>

	<?php
}

function ua_extend_metbox_authordiv($html){

	global $post;
	remove_filter('wp_dropdown_users', 'ua_expand_author_box', 10, 1);
	$meta = get_post_meta($post->ID, 'my_custom field', true);

	$label = __('Check my checkbox', 'text-domain');
	$html .= '<input type="hidden" name="ua_author_metabox_check_nonce" value="'. wp_create_nonce(basename(__FILE__)). '" />';
	$html .= '<label><input type="checkbox" name="my_custom field" id="my_custom field"' . ( $meta ? ' checked="checked"' : '' ) . ' /> '.$label.'</label>';

	return $html;
}