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+<?php
+/**
+ * Twenty Sixteen functions and definitions
+ *
+ * Set up the theme and provides some helper functions, which are used in the
+ * theme as custom template tags. Others are attached to action and filter
+ * hooks in WordPress to change core functionality.
+ *
+ * When using a child theme you can override certain functions (those wrapped
+ * in a function_exists() call) by defining them first in your child theme's
+ * functions.php file. The child theme's functions.php file is included before
+ * the parent theme's file, so the child theme functions would be used.
+ *
+ * @link https://developer.wordpress.org/themes/basics/theme-functions/
+ * @link https://developer.wordpress.org/themes/advanced-topics/child-themes/
+ *
+ * Functions that are not pluggable (not wrapped in function_exists()) are
+ * instead attached to a filter or action hook.
+ *
+ * For more information on hooks, actions, and filters,
+ * {@link https://developer.wordpress.org/plugins/}
+ *
+ * @package WordPress
+ * @subpackage Twenty_Sixteen
+ * @since Twenty Sixteen 1.0
+ */
+
+/**
+ * Twenty Sixteen 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( 'twentysixteen_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 twentysixteen_setup() function to override in a child theme.
+	 *
+	 * @since Twenty Sixteen 1.0
+	 */
+	function twentysixteen_setup() {
+		/*
+		 * Make theme available for translation.
+		 * Translations can be filed at WordPress.org. See: https://translate.wordpress.org/projects/wp-themes/twentysixteen
+		 * If you're building a theme based on Twenty Sixteen, use a find and replace
+		 * to change 'twentysixteen' to the name of your theme in all the template files
+		 */
+		load_theme_textdomain( 'twentysixteen' );
+
+		// 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 custom logo.
+		 *
+		 *  @since Twenty Sixteen 1.2
+		 */
+		add_theme_support(
+			'custom-logo',
+			array(
+				'height'      => 240,
+				'width'       => 240,
+				'flex-height' => true,
+			)
+		);
+
+		/*
+		 * Enable support for Post Thumbnails on posts and pages.
+		 *
+		 * @link https://developer.wordpress.org/reference/functions/add_theme_support/#post-thumbnails
+		 */
+		add_theme_support( 'post-thumbnails' );
+		set_post_thumbnail_size( 1200, 9999 );
+
+		// This theme uses wp_nav_menu() in two locations.
+		register_nav_menus(
+			array(
+				'primary' => __( 'Primary Menu', 'twentysixteen' ),
+				'social'  => __( 'Social Links Menu', 'twentysixteen' ),
+			)
+		);
+
+		/*
+		 * 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',
+				'script',
+				'style',
+			)
+		);
+
+		/*
+		 * Enable support for Post Formats.
+		 *
+		 * See: https://wordpress.org/support/article/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( array( 'css/editor-style.css', twentysixteen_fonts_url() ) );
+
+		// Load regular editor styles into the new block-based editor.
+		add_theme_support( 'editor-styles' );
+
+		// Load default block styles.
+		add_theme_support( 'wp-block-styles' );
+
+		// Add support for responsive embeds.
+		add_theme_support( 'responsive-embeds' );
+
+		// Add support for custom color scheme.
+		add_theme_support(
+			'editor-color-palette',
+			array(
+				array(
+					'name'  => __( 'Dark Gray', 'twentysixteen' ),
+					'slug'  => 'dark-gray',
+					'color' => '#1a1a1a',
+				),
+				array(
+					'name'  => __( 'Medium Gray', 'twentysixteen' ),
+					'slug'  => 'medium-gray',
+					'color' => '#686868',
+				),
+				array(
+					'name'  => __( 'Light Gray', 'twentysixteen' ),
+					'slug'  => 'light-gray',
+					'color' => '#e5e5e5',
+				),
+				array(
+					'name'  => __( 'White', 'twentysixteen' ),
+					'slug'  => 'white',
+					'color' => '#fff',
+				),
+				array(
+					'name'  => __( 'Blue Gray', 'twentysixteen' ),
+					'slug'  => 'blue-gray',
+					'color' => '#4d545c',
+				),
+				array(
+					'name'  => __( 'Bright Blue', 'twentysixteen' ),
+					'slug'  => 'bright-blue',
+					'color' => '#007acc',
+				),
+				array(
+					'name'  => __( 'Light Blue', 'twentysixteen' ),
+					'slug'  => 'light-blue',
+					'color' => '#9adffd',
+				),
+				array(
+					'name'  => __( 'Dark Brown', 'twentysixteen' ),
+					'slug'  => 'dark-brown',
+					'color' => '#402b30',
+				),
+				array(
+					'name'  => __( 'Medium Brown', 'twentysixteen' ),
+					'slug'  => 'medium-brown',
+					'color' => '#774e24',
+				),
+				array(
+					'name'  => __( 'Dark Red', 'twentysixteen' ),
+					'slug'  => 'dark-red',
+					'color' => '#640c1f',
+				),
+				array(
+					'name'  => __( 'Bright Red', 'twentysixteen' ),
+					'slug'  => 'bright-red',
+					'color' => '#ff675f',
+				),
+				array(
+					'name'  => __( 'Yellow', 'twentysixteen' ),
+					'slug'  => 'yellow',
+					'color' => '#ffef8e',
+				),
+			)
+		);
+
+		// Indicate widget sidebars can use selective refresh in the Customizer.
+		add_theme_support( 'customize-selective-refresh-widgets' );
+	}
+endif; // twentysixteen_setup
+add_action( 'after_setup_theme', 'twentysixteen_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 Twenty Sixteen 1.0
+ */
+function twentysixteen_content_width() {
+	$GLOBALS['content_width'] = apply_filters( 'twentysixteen_content_width', 840 );
+}
+add_action( 'after_setup_theme', 'twentysixteen_content_width', 0 );
+
+/**
+ * Add preconnect for Google Fonts.
+ *
+ * @since Twenty Sixteen 1.6
+ *
+ * @param array  $urls           URLs to print for resource hints.
+ * @param string $relation_type  The relation type the URLs are printed.
+ * @return array $urls           URLs to print for resource hints.
+ */
+function twentysixteen_resource_hints( $urls, $relation_type ) {
+	if ( wp_style_is( 'twentysixteen-fonts', 'queue' ) && 'preconnect' === $relation_type ) {
+		$urls[] = array(
+			'href' => 'https://fonts.gstatic.com',
+			'crossorigin',
+		);
+	}
+
+	return $urls;
+}
+add_filter( 'wp_resource_hints', 'twentysixteen_resource_hints', 10, 2 );
+
+/**
+ * Registers a widget area.
+ *
+ * @link https://developer.wordpress.org/reference/functions/register_sidebar/
+ *
+ * @since Twenty Sixteen 1.0
+ */
+function twentysixteen_widgets_init() {
+	register_sidebar(
+		array(
+			'name'          => __( 'Sidebar', 'twentysixteen' ),
+			'id'            => 'sidebar-1',
+			'description'   => __( 'Add widgets here to appear in your sidebar.', 'twentysixteen' ),
+			'before_widget' => '<section id="%1$s" class="widget %2$s">',
+			'after_widget'  => '</section>',
+			'before_title'  => '<h2 class="widget-title">',
+			'after_title'   => '</h2>',
+		)
+	);
+
+	register_sidebar(
+		array(
+			'name'          => __( 'Content Bottom 1', 'twentysixteen' ),
+			'id'            => 'sidebar-2',
+			'description'   => __( 'Appears at the bottom of the content on posts and pages.', 'twentysixteen' ),
+			'before_widget' => '<section id="%1$s" class="widget %2$s">',
+			'after_widget'  => '</section>',
+			'before_title'  => '<h2 class="widget-title">',
+			'after_title'   => '</h2>',
+		)
+	);
+
+	register_sidebar(
+		array(
+			'name'          => __( 'Content Bottom 2', 'twentysixteen' ),
+			'id'            => 'sidebar-3',
+			'description'   => __( 'Appears at the bottom of the content on posts and pages.', 'twentysixteen' ),
+			'before_widget' => '<section id="%1$s" class="widget %2$s">',
+			'after_widget'  => '</section>',
+			'before_title'  => '<h2 class="widget-title">',
+			'after_title'   => '</h2>',
+		)
+	);
+}
+add_action( 'widgets_init', 'twentysixteen_widgets_init' );
+
+if ( ! function_exists( 'twentysixteen_fonts_url' ) ) :
+	/**
+	 * Register Google fonts for Twenty Sixteen.
+	 *
+	 * Create your own twentysixteen_fonts_url() function to override in a child theme.
+	 *
+	 * @since Twenty Sixteen 1.0
+	 *
+	 * @return string Google fonts URL for the theme.
+	 */
+	function twentysixteen_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', 'twentysixteen' ) ) {
+			$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', 'twentysixteen' ) ) {
+			$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', 'twentysixteen' ) ) {
+			$fonts[] = 'Inconsolata:400';
+		}
+
+		if ( $fonts ) {
+			$fonts_url = add_query_arg(
+				array(
+					'family'  => urlencode( implode( '|', $fonts ) ),
+					'subset'  => urlencode( $subsets ),
+					'display' => urlencode( 'fallback' ),
+				),
+				'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 "<script>(function(html){html.className = html.className.replace(/\bno-js\b/,'js')})(document.documentElement);</script>\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(), array(), '20190507' );
+
+	// Theme block stylesheet.
+	wp_enqueue_style( 'twentysixteen-block-style', get_template_directory_uri() . '/css/blocks.css', array( 'twentysixteen-style' ), '20190102' );
+
+	// Load the Internet Explorer specific stylesheet.
+	wp_enqueue_style( 'twentysixteen-ie', get_template_directory_uri() . '/css/ie.css', array( 'twentysixteen-style' ), '20170530' );
+	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' ), '20170530' );
+	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' ), '20170530' );
+	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(), '20170530', 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( 'twentysixteen-keyboard-image-navigation', get_template_directory_uri() . '/js/keyboard-image-navigation.js', array( 'jquery' ), '20170530' );
+	}
+
+	wp_enqueue_script( 'twentysixteen-script', get_template_directory_uri() . '/js/functions.js', array( 'jquery' ), '20181217', true );
+
+	wp_localize_script(
+		'twentysixteen-script',
+		'screenReaderText',
+		array(
+			'expand'   => __( 'expand child menu', 'twentysixteen' ),
+			'collapse' => __( 'collapse child menu', 'twentysixteen' ),
+		)
+	);
+}
+add_action( 'wp_enqueue_scripts', 'twentysixteen_scripts' );
+
+/**
+ * Enqueue styles for the block-based editor.
+ *
+ * @since Twenty Sixteen 1.6
+ */
+function twentysixteen_block_editor_styles() {
+	// Block styles.
+	wp_enqueue_style( 'twentysixteen-block-editor-style', get_template_directory_uri() . '/css/editor-blocks.css', array(), '20190102' );
+	// Add custom fonts.
+	wp_enqueue_style( 'twentysixteen-fonts', twentysixteen_fonts_url(), array(), null );
+}
+add_action( 'enqueue_block_editor_assets', 'twentysixteen_block_editor_styles' );
+
+/**
+ * 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 ) );
+	} elseif ( 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 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];
+
+	if ( 840 <= $width ) {
+		$sizes = '(max-width: 709px) 85vw, (max-width: 909px) 67vw, (max-width: 1362px) 62vw, 840px';
+	}
+
+	if ( 'page' === get_post_type() ) {
+		if ( 840 > $width ) {
+			$sizes = '(max-width: ' . $width . 'px) 85vw, ' . $width . 'px';
+		}
+	} else {
+		if ( 840 > $width && 600 <= $width ) {
+			$sizes = '(max-width: 709px) 85vw, (max-width: 909px) 67vw, (max-width: 984px) 61vw, (max-width: 1362px) 45vw, 600px';
+		} elseif ( 600 > $width ) {
+			$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 array The filtered attributes for the image markup.
+ */
+function twentysixteen_post_thumbnail_sizes_attr( $attr, $attachment, $size ) {
+	if ( 'post-thumbnail' === $size ) {
+		if ( is_active_sidebar( 'sidebar-1' ) ) {
+			$attr['sizes'] = '(max-width: 709px) 85vw, (max-width: 909px) 67vw, (max-width: 984px) 60vw, (max-width: 1362px) 62vw, 840px';
+		} else {
+			$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 display all tags in the same font size
+ * and use list format for better accessibility.
+ *
+ * @since Twenty Sixteen 1.1
+ *
+ * @param array $args Arguments for tag cloud widget.
+ * @return array The filtered arguments for tag cloud widget.
+ */
+function twentysixteen_widget_tag_cloud_args( $args ) {
+	$args['largest']  = 1;
+	$args['smallest'] = 1;
+	$args['unit']     = 'em';
+	$args['format']   = 'list';
+
+	return $args;
+}
+add_filter( 'widget_tag_cloud_args', 'twentysixteen_widget_tag_cloud_args' );