functions.php

<?php
/**
 * Isola functions and definitions
 *
 * @package Isola
 */

/**
 * Set the content width based on the theme's design and stylesheet.
 */
if ( ! isset( $content_width ) ) {
	$content_width = 1200; /* pixels */
}

if ( ! function_exists( 'isola_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.
 */
function isola_setup() {

	/*
	 * Make theme available for translation.
	 * Translations can be filed in the /languages/ directory.
	 * If you're building a theme based on Isola, use a find and replace
	 * to change 'isola' to the name of your theme in all the template files
	 */
	load_theme_textdomain( 'isola', get_template_directory() . '/languages' );

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

	/*
	 * 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' );
	add_image_size( 'isola-featured', 1200, 9999, false );

	// This theme uses wp_nav_menu() in one location.
	register_nav_menus( array(
		'primary' => __( 'Primary Menu', 'isola' ),
	) );

	/*
	 * 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 http://codex.wordpress.org/Post_Formats
	 */
	add_theme_support( 'post-formats', array(
		'aside', 'image', 'video', 'quote', 'link', 'gallery'
	) );

	// Setup the WordPress core custom background feature.
	add_theme_support( 'custom-background', apply_filters( 'isola_custom_background_args', array(
		'default-color' => 'ffffff',
		'default-image' => '',
	) ) );
}
endif; // isola_setup
add_action( 'after_setup_theme', 'isola_setup' );

/**
 * Register widget area.
 *
 * @link http://codex.wordpress.org/Function_Reference/register_sidebar
 */
function isola_widgets_init() {
	register_sidebar( array(
		'name'          => __( 'Sidebar', 'isola' ),
		'id'            => 'sidebar-1',
		'description'   => '',
		'before_widget' => '<aside id="%1$s" class="widget %2$s">',
		'after_widget'  => '</aside>',
		'before_title'  => '<h1 class="widget-title">',
		'after_title'   => '</h1>',
	) );
}
add_action( 'widgets_init', 'isola_widgets_init' );

/**
 * Enqueue scripts and styles.
 */
function isola_scripts() {
	wp_enqueue_style( 'isola-style', get_stylesheet_uri() );
	wp_enqueue_style( 'isola-source-sans-pro' );
	wp_enqueue_style( 'genericons', get_template_directory_uri() . '/genericons/genericons.css', array(), '3.0.3' );

	wp_enqueue_script( 'isola-menu', get_template_directory_uri() . '/js/isola.js', array( 'jquery' ), '20140623', true );

	wp_enqueue_script( 'isola-navigation', get_template_directory_uri() . '/js/navigation.js', array(), '20120206', true );

	wp_enqueue_script( 'isola-skip-link-focus-fix', get_template_directory_uri() . '/js/skip-link-focus-fix.js', array(), '20130115', true );

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

/**
 * Implement the Custom Header feature.
 */
require get_template_directory() . '/inc/custom-header.php';

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

/**
 * Custom functions that act independently of the theme templates.
 */
require get_template_directory() . '/inc/extras.php';

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

/**
 * Load Jetpack compatibility file.
 */
require get_template_directory() . '/inc/jetpack.php';

/**
 * Register Google Fonts
 */
function isola_google_fonts() {

	$protocol = is_ssl() ? 'https' : 'http';

	/*	translators: If there are characters in your language that are not supported
		by Source Sans Pro, translate this to 'off'. Do not translate into your own language. */

	if ( 'off' !== _x( 'on', 'Source Sans Pro font: on or off', 'isola' ) ) {

		wp_register_style( 'isola-source-sans-pro', "$protocol://fonts.googleapis.com/css?family=Source+Sans+Pro:400,600,700,300italic,400italic,600italic,700italic&subset=latin,latin-ext" );

	}

}
add_action( 'init', 'isola_google_fonts' );

/**
 * Enqueue Google Fonts for custom headers
 */
function isola_admin_scripts( $hook_suffix ) {

	if ( 'appearance_page_custom-header' != $hook_suffix )
		return;

	wp_enqueue_style( 'isola-source-sans-pro' );

}
add_action( 'admin_enqueue_scripts', 'isola_admin_scripts' );

/**
 * Process [sourcecode] & [code] shortcodes
 * Author: Juan Luis Cano Rodríguez <juanlu001@gmail.com>
 */
function sourcecode_function($atts, $content = null) {
    extract(shortcode_atts(array(
        'language' => null,
    ), $atts));
	$clean = wp_strip_all_tags($content);
	if (is_null($language)) {
        $return_string = '<pre><code>' . $clean . '</code></pre>';
	} else {
        $return_string = '<pre><code class="language-' . strtolower($language) . '">' . $clean . '</code></pre>';
    }
	return $return_string;
}
function register_shortcodes(){
	add_shortcode('sourcecode', 'sourcecode_function');
	add_shortcode('code', 'sourcecode_function');
}
add_action('init', 'register_shortcodes');

function plotly_shortcode($atts, $content=null){
    extract(shortcode_atts(array(
        'id' => 'igraph',
        'height' => 400,
    ), $atts));
    return '<iframe height="' . $height . '" id="' . $id . '" scrolling="no" seamless="seamless" src="' . $content . '" width="100%"></iframe>';
}
add_shortcode('plotly', 'plotly_shortcode');

/**
 * Remove texturize filter
 */
remove_filter( 'the_content', 'wptexturize' );