functions.sample.php

<?php
// define constants
define( 'THEME_PATH', get_bloginfo( 'stylesheet_directory' ) );
define( 'HOME_URL', home_url() );
if ( ! isset( $content_width ) ) $content_width = 1200;

require_once 'includes/Hyperion.php';
require_once 'includes/Theme_Options.php';
require_once 'includes/Custom_Post.php';
require_once 'includes/Custom_Widget.sample.php';
require_once 'includes/Metabox.php';

class MyTheme extends Hyperion{
	private $theme_options;
	
	/**
	* The class constructor, fired after setup theme event.
	* Will load all settings of the theme 
	*/
	function __construct(){	
		parent::__construct();

		// add actions and filters
		add_shortcode('shortcode', array( &$this, 'some_shortcode' ));
		add_action( 'widgets_init', array( &$this, 'register_sidebars' ) );
		add_action( 'wp_enqueue_scripts', array( &$this, 'add_scripts_and_styles') );  
		add_action( 'login_enqueue_scripts', array( &$this, 'login_styles'));
		add_action( 'admin_enqueue_scripts', array( &$this, 'admin_styles'));
		add_filter( 'admin_footer_text', array( &$this, 'remove_footer_admin'));
		add_action( 'widgets_init', array( &$this, 'register_widget' ));

		// add image sizes
		add_image_size( 'single', 780, 500); 
		
		// final bits 
		$this->register_post_types();
		$this->create_metabox(); 
		$this->register_scripts_and_styles();
		$this->theme_options();
	}

	// Customise the footer in admin area
	function remove_footer_admin () {
		echo get_avatar('[email]' , '40' );
		echo 'Theme designed and developed by <a href="[url]" target="_blank">[name]</a> and powered by <a href="http://wordpress.org" target="_blank">WordPress</a>.';
	}
	
	// add custom admin styles
	function admin_styles() {
		wp_enqueue_style( 'admin-css', THEME_PATH.'/css/wp-admin.css' );
	}

	// add custom login styles
	function login_styles() {
		wp_enqueue_style( 'login-css', THEME_PATH.'/css/wp-login.css' );
	}

	// use this function to include conditional scripts and styles
	function add_scripts_and_styles(){
		if(is_front_page()){ 
			// add custom scripts/styles
		} 
		if(get_the_title() == 'Something' ) {
			// add custom scripts/styles
		}
		// more code
	}


	// Register scripts and styles with WP
	function register_scripts_and_styles(){
		// wp_register_script( '*', THEME_PATH.'/js/*.js', array( 'jquery' ), '1.0', true ); 
		// wp_register_style( '*', THEME_PATH.'/css/*.css' );
	}

	public function theme_options(){
		$this->theme_options = new Theme_Options();
		$this->theme_options->addTab(array(
			'name' => 'General',
			'slug' => 'general',
			'options' => array(
				'option1' => 'Option 1',
				'option2' => 'Option 2'
			)
		));

		$this->theme_options->addTab(array(
			'name' => 'Help',
			'slug' => 'help',
			'options' => array(
				'option3' => array(
					'name' => 'Option 3',
					'desc' => 'Some description'
				),
				'option4' => 'Option 4'
			)
		));
		$this->theme_options->render();
	}

	// create custom shortcodes
	function some_shortcode( $atts, $content = null ) {
		extract(shortcode_atts(array('attribute' => 'default_value'), $atts));
		return "<div $attribute>".do_shortcode($content)."</div>";
	}

	// register post types
	function register_post_types(){
		Custom_Post::create(array('name' => 'Custom post'));
	}

	// create a custom widget
	function register_widget() {
		register_widget( 'Custom_Widget' );
	}

	// create a metabox
	protected function create_metabox(){ 
		MetaBox::create(array(
			'fields' => array(
					array('name' => 'Test field', 'description' => 'Some description')
			)
		));
	}
	/*
	* Register theme sidebars.
	*
	* Will register the main sidebar used for the blog,
	* the front page sidebar and the footer sidebar. 
	*/
	function register_sidebars(){
		if ( function_exists('register_sidebar') ) {
			register_sidebar(array(
				'name' => 'Main',
				'before_widget' => '<div id="%1$s" class="widget %2$s">',
				'after_widget' => '</div>',
				'before_title' => '<h3>',
				'after_title' => '</h3>',
			));
			// register more sidebars...
		}
	}
}

// Initialize the above class after theme setup
add_action( 'after_setup_theme', create_function( '', 'global $theme; $theme = new MyTheme();' ) );

?>