functions.php

<?php
/*
Author: Eddie Machado
URL: http://themble.com/bones/

This is where you can drop your custom functions or
just edit things like thumbnail sizes, header images,
sidebars, comments, etc.
*/

// LOAD BONES CORE (if you remove this, the theme will break)
require_once( 'library/bones.php' );

// CUSTOMIZE THE WORDPRESS ADMIN (off by default)
// require_once( 'library/admin.php' );

/*********************
LAUNCH BONES
Let's get everything up and running.
*********************/

function bones_ahoy() {

  //Allow editor style.
  add_editor_style( get_stylesheet_directory_uri() . '/library/css/editor-style.css' );

  // launching operation cleanup
  add_action( 'init', 'bones_head_cleanup' );
  // A better title
  add_filter( 'wp_title', 'rw_title', 10, 3 );
  // remove WP version from RSS
  add_filter( 'the_generator', 'bones_rss_version' );
  // remove pesky injected css for recent comments widget
  add_filter( 'wp_head', 'bones_remove_wp_widget_recent_comments_style', 1 );
  // clean up comment styles in the head
  add_action( 'wp_head', 'bones_remove_recent_comments_style', 1 );
  // clean up gallery output in wp
  add_filter( 'gallery_style', 'bones_gallery_style' );

  // enqueue base scripts and styles
  add_action( 'wp_enqueue_scripts', 'bones_scripts_and_styles', 999 );
  // ie conditional wrapper

  // launching this stuff after theme setup
  bones_theme_support();

  // adding sidebars to Wordpress (these are created in functions.php)
  add_action( 'widgets_init', 'bones_register_sidebars' );

  // cleaning up random code around images
  add_filter( 'the_content', 'bones_filter_ptags_on_images' );
  // cleaning up excerpt
  add_filter( 'excerpt_more', 'bones_excerpt_more' );

} /* end bones ahoy */

// let's get this party started
add_action( 'after_setup_theme', 'bones_ahoy' );


/************* OEMBED SIZE OPTIONS *************/

if ( ! isset( $content_width ) ) {
	$content_width = 680;
}

/************* THUMBNAIL SIZE OPTIONS *************/

// Thumbnail sizes
add_image_size( 'bones-thumb-600', 600, 150, true );
add_image_size( 'bones-thumb-300', 300, 100, true );

/*
to add more sizes, simply copy a line from above
and change the dimensions & name. As long as you
upload a "featured image" as large as the biggest
set width or height, all the other sizes will be
auto-cropped.

To call a different size, simply change the text
inside the thumbnail function.

For example, to call the 300 x 100 sized image,
we would use the function:
<?php the_post_thumbnail( 'bones-thumb-300' ); ?>
for the 600 x 150 image:
<?php the_post_thumbnail( 'bones-thumb-600' ); ?>

You can change the names and dimensions to whatever
you like. Enjoy!
*/

add_filter( 'image_size_names_choose', 'bones_custom_image_sizes' );

function bones_custom_image_sizes( $sizes ) {
    return array_merge( $sizes, array(
        'bones-thumb-600' => __('600px by 150px'),
        'bones-thumb-300' => __('300px by 100px'),
    ) );
}

/*
The function above adds the ability to use the dropdown menu to select
the new images sizes you have just created from within the media manager
when you add media to your content blocks. If you add more image sizes,
duplicate one of the lines in the array and name it according to your
new image size.
*/

/************* THEME CUSTOMIZE *********************/

/* 
  A good tutorial for creating your own Sections, Controls and Settings:
  http://code.tutsplus.com/series/a-guide-to-the-wordpress-theme-customizer--wp-33722
  
  Good articles on modifying the default options:
  http://natko.com/changing-default-wordpress-theme-customization-api-sections/
  http://code.tutsplus.com/tutorials/digging-into-the-theme-customizer-components--wp-27162
  
  To do:
  - Create a js for the postmessage transport method
  - Create some sanitize functions to sanitize inputs
  - Create some boilerplate Sections, Controls and Settings
*/

function bones_theme_customizer($wp_customize) {
  // $wp_customize calls go here.
  //
  // Uncomment the below lines to remove the default customize sections 

  // $wp_customize->remove_section('title_tagline');
  // $wp_customize->remove_section('colors');
  // $wp_customize->remove_section('background_image');
  // $wp_customize->remove_section('static_front_page');
  // $wp_customize->remove_section('nav');

  // Uncomment the below lines to remove the default controls
  // $wp_customize->remove_control('blogdescription');
  
  // Uncomment the following to change the default section titles
  // $wp_customize->get_section('colors')->title = __( 'Theme Colors' );
  // $wp_customize->get_section('background_image')->title = __( 'Images' );
}

add_action( 'customize_register', 'bones_theme_customizer' );

/************* ACTIVE SIDEBARS ********************/

// Sidebars & Widgetizes Areas
function bones_register_sidebars() {
	register_sidebar(array(
		'id' => 'sidebar1',
		'name' => __( 'Sidebar 1', 'bonestheme' ),
		'description' => __( 'The first (primary) sidebar.', 'bonestheme' ),
		'before_widget' => '<div id="%1$s" class="widget %2$s">',
		'after_widget' => '</div>',
		'before_title' => '<h4 class="widgettitle">',
		'after_title' => '</h4>',
	));

	/*
	to add more sidebars or widgetized areas, just copy
	and edit the above sidebar code. In order to call
	your new sidebar just use the following code:

	Just change the name to whatever your new
	sidebar's id is, for example:

	register_sidebar(array(
		'id' => 'sidebar2',
		'name' => __( 'Sidebar 2', 'bonestheme' ),
		'description' => __( 'The second (secondary) sidebar.', 'bonestheme' ),
		'before_widget' => '<div id="%1$s" class="widget %2$s">',
		'after_widget' => '</div>',
		'before_title' => '<h4 class="widgettitle">',
		'after_title' => '</h4>',
	));

	To call the sidebar in your template, you can just copy
	the sidebar.php file and rename it to your sidebar's name.
	So using the above example, it would be:
	sidebar-sidebar2.php

	*/
} // don't remove this bracket!


/************* COMMENT LAYOUT *********************/

// Comment Layout
function bones_comments( $comment, $args, $depth ) {
   $GLOBALS['comment'] = $comment; ?>
  <div id="comment-<?php comment_ID(); ?>" <?php comment_class('cf'); ?>>
    <article  class="cf">
      <header class="comment-author vcard">
        <?php
        /*
          this is the new responsive optimized comment image. It used the new HTML5 data-attribute to display comment gravatars on larger screens only. What this means is that on larger posts, mobile sites don't have a ton of requests for comment images. This makes load time incredibly fast! If you'd like to change it back, just replace it with the regular wordpress gravatar call:
          echo get_avatar($comment,$size='32',$default='<path_to_url>' );
        */
        ?>
        <?php // custom gravatar call ?>
        <?php
          // create variable
          $bgauthemail = get_comment_author_email();
        ?>
        <img data-gravatar="http://www.gravatar.com/avatar/<?php echo md5( $bgauthemail ); ?>?s=40" class="load-gravatar avatar avatar-48 photo" height="40" width="40" src="<?php echo get_template_directory_uri(); ?>/library/images/nothing.gif" />
        <?php // end custom gravatar call ?>
        <?php printf(__( '<cite class="fn">%1$s</cite> %2$s', 'bonestheme' ), get_comment_author_link(), edit_comment_link(__( '(Edit)', 'bonestheme' ),'  ','') ) ?>
        <time datetime="<?php echo comment_time('Y-m-j'); ?>"><a href="<?php echo htmlspecialchars( get_comment_link( $comment->comment_ID ) ) ?>"><?php comment_time(__( 'F jS, Y', 'bonestheme' )); ?> </a></time>

      </header>
      <?php if ($comment->comment_approved == '0') : ?>
        <div class="alert alert-info">
          <p><?php _e( 'Your comment is awaiting moderation.', 'bonestheme' ) ?></p>
        </div>
      <?php endif; ?>
      <section class="comment_content cf">
        <?php comment_text() ?>
      </section>
      <?php comment_reply_link(array_merge( $args, array('depth' => $depth, 'max_depth' => $args['max_depth']))) ?>
    </article>
  </div>
  <?php // </li> is added by WordPress automatically ?>
<?php
} // don't remove this bracket!


/*
This is a modification of a function found in the
twentythirteen theme where we can declare some
external fonts. If you're using Google Fonts, you
can replace these fonts, change it in your scss files
and be up and running in seconds.
*/
function bones_fonts() {
  wp_enqueue_style('googleFonts', 'http://fonts.googleapis.com/css?family=Lato:400,700,400italic,700italic');
}

add_action('wp_enqueue_scripts', 'bones_fonts');


// ADDITIONAL FIELDS IN PAGE TEMPLATES


// FOOTER COLOUR
add_action( 'add_meta_boxes', 'meta_box_add' );
function meta_box_add() {
    add_meta_box( 'header-option', 'Header Color', 'header_meta_box_cb', 'page', 'normal', 'high' );
    add_meta_box( 'footer-option', 'Footer Color', 'footer_meta_box_cb', 'page', 'normal', 'high' );
}


function header_meta_box_cb( $post ) {
    $values = get_post_custom( $post->ID );
    $text = isset( $values['header_color'] ) ? esc_attr( $values['header_color'][0] ) : '';
    wp_nonce_field( 'my_header_meta_box_nonce', 'header_meta_box_nonce' );
    ?>
    <p>
        <label for="header_color">Header Background Colour</label>
        <select name="header_color" id="header_color" selected="<?php echo $text; ?>" value="<?php echo $text; ?>">
          <option value="white" <?php if ($text == "white") {echo 'selected'; } ?>>White</option>
          <option value="green" <?php if ($text == "green") {echo 'selected'; } ?>>Green</option>
          <option value="gray" <?php if ($text == "gray") {echo 'selected'; } ?>>Gray</option>
        </select>
    </p>
    <?php   
}

function footer_meta_box_cb( $post ) {
    $values = get_post_custom( $post->ID );
    $text = isset( $values['footer_color'] ) ? esc_attr( $values['footer_color'][0] ) : '';
    wp_nonce_field( 'my_footer_meta_box_nonce', 'footer_meta_box_nonce' );
    ?>
    <p>
        <label for="footer_color">Footer Background Colour</label>
        <select name="footer_color" id="footer_color">
          <option value="white" <?php if ($text == "white") {echo 'selected'; } ?>>White</option>
          <option value="green" <?php if ($text == "green") {echo 'selected'; } ?>>Green</option>
          <option value="gray" <?php if ($text == "gray") {echo 'selected'; } ?>>Gray</option>
        </select>
    </p>
    <?php   
}

add_action( 'save_post', 'header_meta_box_save' );

function header_meta_box_save( $post_id ) {
    // Bail if we're doing an auto save
    if( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) return;
    // if our nonce isn't there, or we can't verify it, bail
    if( !isset( $_POST['header_meta_box_nonce'] ) || !wp_verify_nonce( $_POST['header_meta_box_nonce'], 'my_header_meta_box_nonce' ) ) return;
    // if our current user can't edit this post, bail
    if( !current_user_can( 'edit_post', $post_id ) ) return;
    // now we can actually save the data
    $allowed = array( 
        'a' => array( // on allow a tags
            'href' => array() // and those anchords can only have href attribute
        )
    );
    // Probably a good idea to make sure your data is set
    if( isset( $_POST['header_color'] ) )
        update_post_meta( $post_id, 'header_color', wp_kses( $_POST['header_color'], $allowed ) );
}


add_action( 'save_post', 'footer_meta_box_save' );

function footer_meta_box_save( $post_id ) {
    // Bail if we're doing an auto save
    if( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) return;
    // if our nonce isn't there, or we can't verify it, bail
    if( !isset( $_POST['footer_meta_box_nonce'] ) || !wp_verify_nonce( $_POST['footer_meta_box_nonce'], 'my_footer_meta_box_nonce' ) ) return;
    // if our current user can't edit this post, bail
    if( !current_user_can( 'edit_post', $post_id ) ) return;
    // now we can actually save the data
    $allowed = array( 
        'a' => array( // on allow a tags
            'href' => array() // and those anchords can only have href attribute
        )
    );
    // Probably a good idea to make sure your data is set
    if( isset( $_POST['footer_color'] ) )
        update_post_meta( $post_id, 'footer_color', wp_kses( $_POST['footer_color'], $allowed ) );
}


//deactivate WordPress function
remove_shortcode('gallery', 'gallery_shortcode');

//activate own function
add_shortcode('gallery', 'wpe_gallery_shortcode');

//the own renamed function
function wpe_gallery_shortcode( $attr ) {
  $post = get_post();

  static $instance = 0;
  $instance++;

  if ( ! empty( $attr['ids'] ) ) {
    // 'ids' is explicitly ordered, unless you specify otherwise.
    if ( empty( $attr['orderby'] ) ) {
      $attr['orderby'] = 'post__in';
    }
    $attr['include'] = $attr['ids'];
  }

  /**
   * Filter the default gallery shortcode output.
   *
   * If the filtered output isn't empty, it will be used instead of generating
   * the default gallery template.
   *
   * @since 2.5.0
   * @since 4.2.0 The `$instance` parameter was added.
   *
   * @see gallery_shortcode()
   *
   * @param string $output   The gallery output. Default empty.
   * @param array  $attr     Attributes of the gallery shortcode.
   * @param int    $instance Unique numeric ID of this gallery shortcode instance.
   */
  $output = apply_filters( 'post_gallery', '', $attr, $instance );
  if ( $output != '' ) {
    return $output;
  }

  $html5 = current_theme_supports( 'html5', 'gallery' );
  $atts = shortcode_atts( array(
    'order'      => 'ASC',
    'orderby'    => 'menu_order ID',
    'id'         => $post ? $post->ID : 0,
    'itemtag'    => $html5 ? 'figure'     : 'dl',
    'icontag'    => $html5 ? 'div'        : 'dt',
    'captiontag' => $html5 ? 'figcaption' : 'dd',
    'columns'    => 3,
    'size'       => 'thumbnail',
    'include'    => '',
    'exclude'    => '',
    'link'       => ''
  ), $attr, 'gallery' );

  $id = intval( $atts['id'] );

  if ( ! empty( $atts['include'] ) ) {
    $_attachments = get_posts( array( 'include' => $atts['include'], 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => $atts['order'], 'orderby' => $atts['orderby'] ) );

    $attachments = array();
    foreach ( $_attachments as $key => $val ) {
      $attachments[$val->ID] = $_attachments[$key];
    }
  } elseif ( ! empty( $atts['exclude'] ) ) {
    $attachments = get_children( array( 'post_parent' => $id, 'exclude' => $atts['exclude'], 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => $atts['order'], 'orderby' => $atts['orderby'] ) );
  } else {
    $attachments = get_children( array( 'post_parent' => $id, 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => $atts['order'], 'orderby' => $atts['orderby'] ) );
  }

  if ( empty( $attachments ) ) {
    return '';
  }

  if ( is_feed() ) {
    $output = "\n";
    foreach ( $attachments as $att_id => $attachment ) {
      $output .= wp_get_attachment_link( $att_id, $atts['size'], true ) . "\n";
    }
    return $output;
  }

  $itemtag = tag_escape( $atts['itemtag'] );
  $captiontag = tag_escape( $atts['captiontag'] );
  $icontag = tag_escape( $atts['icontag'] );
  $valid_tags = wp_kses_allowed_html( 'post' );
  if ( ! isset( $valid_tags[ $itemtag ] ) ) {
    $itemtag = 'dl';
  }
  if ( ! isset( $valid_tags[ $captiontag ] ) ) {
    $captiontag = 'dd';
  }
  if ( ! isset( $valid_tags[ $icontag ] ) ) {
    $icontag = 'dt';
  }

  $columns = intval( $atts['columns'] );
  $itemwidth = $columns > 0 ? floor(100/$columns) : 100;
  $float = is_rtl() ? 'right' : 'left';

  $selector = "gallery-{$instance}";

  $gallery_style = '';

  /**
   * Filter whether to print default gallery styles.
   *
   * @since 3.1.0
   *
   * @param bool $print Whether to print default gallery styles.
   *                    Defaults to false if the theme supports HTML5 galleries.
   *                    Otherwise, defaults to true.
   */


  $size_class = sanitize_html_class( $atts['size'] );
  $gallery_div = "<div id='$selector' class='grid-item'>";

  /**
   * Filter the default gallery shortcode CSS styles.
   *
   * @since 2.5.0
   *
   * @param string $gallery_style Default CSS styles and opening HTML div container
   *                              for the gallery shortcode output.
   */
  $output = apply_filters( 'gallery_style', $gallery_style . $gallery_div );

  $i = 0;
  foreach ( $attachments as $id => $attachment ) {

    if ($i > 50) {
      $hiddenelem = 'hidden';
    }

    $attr = ( trim( $attachment->post_excerpt ) ) ? array( 'aria-describedby' => "$selector-$id" ) : '';
    
    $image_output = wp_get_attachment_image( $id, $atts['size'], false, $attr );
    

    $image_meta  = wp_get_attachment_metadata( $id );
    $src = wp_get_attachment_image_src( $id, 'full' );
    $image_padding_bottom = 100 * ( $src[2] / $src[1] );

    $output .= "<div class='gallery-item".$hiddenelem."'>";
    $output .= "
      <div class='gallery-icon'>
        <div class='gallery-inner' style='padding-bottom:".$image_padding_bottom."%'>
          $image_output
        </div>
      </div>";
    $output .= "</div>";
  }

  $output .= "
    </div>\n";

  return $output;
}

require_once('theme-settings.php');

function get_custom ($name) {
    if (empty(get_post_meta(get_the_ID(), $name, 1))) {
      $settings = get_option( "theme_settings" );
      echo stripslashes($settings[$name]);
    } else {
      echo get_post_meta(get_the_ID(), $name, 1);
    }
  }


function getthefield( $thefield ){
  if (!empty(get_post_meta(get_the_ID(), $thefield, 1))) {
    echo stripslashes(get_post_meta(get_the_ID(), $thefield, 1));
  } else if (!empty(get_custom($thefield))) { 
    echo stripslashes(get_custom($thefield));
  } else {
    echo 'PLEASE SPECIFY CONTENT FOR THIS AREA';
  }
}

function headerbuttonsexist() {
  if ( empty(get_post_meta(get_the_ID(), 'header_primary_button_text', 1) || get_post_meta(get_the_ID(), 'header_primary_button_url', 1)) ) {
    if ( empty(get_post_meta(get_the_ID(), 'header_secondary_button_text', 1) || get_post_meta(get_the_ID(), 'header_secondary_button_url', 1)) )
      echo('no-buttons');
  }
}


add_filter('next_posts_link_attributes', 'posts_link_attributes');
add_filter('previous_posts_link_attributes', 'posts_link_attributes');

function posts_link_attributes() {
    return 'class="button-black-outline"';
}

function search_tweak( $query ) {
  if( $query->is_search ) {
    $query->set( 'post_type', 'post' );
  }
  return $query;
}
add_filter( 'pre_get_posts', 'search_tweak' );


if ( ! function_exists( 'shortcode_exists' ) ) {
  /**
   * Check if a shortcode is registered in WordPress.
   *
   * Examples: shortcode_exists( 'caption' ) - will return true.
   *           shortcode_exists( 'blah' )    - will return false.
   */
  function shortcode_exists( $shortcode = false ) {
    global $shortcode_tags;
    if ( ! $shortcode )
      return false;
    if ( array_key_exists( $shortcode, $shortcode_tags ) )
      return true;
    return false;
  }
}

/* DON'T DELETE THIS CLOSING TAG */ ?>