functions.php

<?php
/**
 * codexin functions and definitions
 *
 * @link https://developer.wordpress.org/themes/basics/theme-functions/
 *
 * @package codexin
 */

/**
 * Navigations Menus
 */
require get_template_directory() . '/lib/menus.php';

/**
 * Shortcodes
 */
//require get_template_directory() . '/lib/shortcodes.php';

/**
 * Enque styles and js
 */
require get_template_directory() . '/lib/scripts.php';


/**
 * Adding widgets
 */
require get_template_directory() . '/lib/widgets.php';

/**
 * load all Puremedia Custom widgets in dashboard
 */ 
 require get_template_directory() . '/lib/widgets/puremedia-category-widget.php';
 require get_template_directory() . '/lib/widgets/puremedia-latest-photo-widget.php';
 require get_template_directory() . '/lib/widgets/puremedia-tag-widget.php';
 require get_template_directory() . '/lib/widgets/puremedia-text-widget.php';


/**
 * Adding metaboxes
 */
require get_template_directory() . '/lib/metaboxes.php';

/**
 * Adding plugins
 */
require get_template_directory() . '/lib/plugins/required-plugins.php';

/**
 * Adding Custom Posts
 */
require get_template_directory() . '/lib/custompost.php';

/**
 * Adding Custom Shortcode
 */
require get_template_directory() . '/lib/codexin-kc-shortcodes/cx_shortcodes.php';
require get_template_directory() . '/lib/codexin-kc-shortcodes/kc_integrated.php';

/**
 * Adding Theme Options
 */
require get_template_directory() . '/lib/admin-options.php';



if ( ! isset( $content_width ) ) {
	$content_width = 800;
}

if ( ! function_exists( 'codexin_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 codexin_setup() {
	/*
	 * Make theme available for translation.
	 * Translations can be filed in the /languages/ directory.
	 * If you're building a theme based on codexin, use a find and replace
	 * to change 'codexin' to the name of your theme in all the template files.
	 */
	load_theme_textdomain( 'puremedia', 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' );

	/**
	 * Add support for post formats.
	 */
	add_theme_support( 'post-formats',
		array(
			'aside',
			'image',
			'video',
			'quote',
			'link',
			'gallery',
			'status',
			'audio',
			'chat',
		)
	);

	/*
	 * Enable support for Post Thumbnails on posts and pages.
	 *
	 * @link https://developer.wordpress.org/themes/functionality/featured-images-post-thumbnails/
	 */
	add_theme_support( 'post-thumbnails' );

	/*
	 * 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',
	) );

	/*
		 * Adding custom header support
		 * to the theme
		 */		
		$puremedia_args = array(
		    'flex-width'    => true,
		    'width'         => 1900,
		    'flex-height'   => true,
		    'height'        => 338,
		    'default-image' => get_template_directory_uri() . '/images/hero-bg.jpg',
		);
		add_theme_support( 'custom-header', $puremedia_args );

		/*
		 * Adding custom background support
		 * to the theme
		 */		
		$defaults = array(
			'default-color'          => '',
			'default-image'          => '',
			'default-repeat'         => '',
			'default-position-x'     => '',
			'default-attachment'     => '',
			'wp-head-callback'       => '_custom_background_cb',
			'admin-head-callback'    => '',
			'admin-preview-callback' => ''
		);
		add_theme_support( 'custom-background', $defaults );

	// Providing Shortcode Support on text widget
	add_filter( 'widget_text', 'do_shortcode' );

}
endif;
add_action( 'after_setup_theme', 'codexin_setup' );


// include Redux framework theme  options

if ( !class_exists( 'ReduxFramework' ) && file_exists( dirname( __FILE__ ) . '/ReduxFramework/ReduxCore/framework.php' ) ) {
    require_once( dirname( __FILE__ ) . '/ReduxFramework/ReduxCore/framework.php' );
}
if ( !isset( $redux_demo ) && file_exists( dirname( __FILE__ ) . '/ReduxFramework/admin-config.php' ) ) {
    require_once( dirname( __FILE__ ) . '/ReduxFramework/admin-config.php' );
}


/* Removing 'Redux Framework' sub menu under Tools */

/** remove redux menu under the tools **/
add_action( 'admin_menu', 'remove_redux_menu',12 );
function remove_redux_menu() {
    remove_submenu_page('tools.php','redux-about');
}

/**
 * Apply theme's stylesheet to the visual editor.
 *
 * @uses add_editor_style() Links a stylesheet to visual editor
 * @uses get_stylesheet_uri() Returns URI of theme stylesheet
 */
	add_action( 'admin_init', 'puremedia_add_editor_styles' );
	function puremedia_add_editor_styles() {
		add_editor_style();
	}


// Removing srcset from featured image
add_filter( 'max_srcset_image_width', create_function( '', 'return 1;' ) );

// Removing width & height from featured image
add_filter( 'post_thumbnail_html', 'remove_thumbnail_dimensions', 10, 3 );

function remove_thumbnail_dimensions( $html, $post_id, $post_image_id ) {
    $html = preg_replace( '/(width|height)=\"\d*\"\s/', "", $html );
    return $html;
}

add_image_size('puremedia-post-single', 647, 303, true);
add_image_size('portfolio-small-thum', 291, 291, true);


require get_template_directory() . '/lib/puremedia-comments.php';

//add contet select-fetured-image options on admin
add_filter( 'admin_post_thumbnail_html', 'slider_image_selected', 10, 2 );
function slider_image_selected( $content, $post_id ) {
    return $content . 'Image size is should be Min(WxH) : 1400X700px';
}