appearance-customizations

<?php
/**
 *  Appearance Customizations
 *
 * @description: All functions that customize the appearance go here
 */


/*---------- Images -----------*/

/************ TRY OUT WITH LIGHTBOX CODE****
*
* Add Rel="lightbox" to all images embedded in a post.
* http://wpsnipp.com/index.php/functions-php/add-rel-lightbox-to-all-images-embedded-in-a-post/ 
*
******************

add_filter('the_content', 'my_addlightboxrel');
function my_addlightboxrel($content) {
       global $post;
       $pattern ="/<a(.*?)href=('|\")(.*?).(bmp|gif|jpeg|jpg|png)('|\")(.*?)>/i";
       $replacement = '<a$1href=$2$3.$4$5 rel="lightbox" title="'.$post->post_title.'"$6>';
       $content = preg_replace($pattern, $replacement, $content);
       return $content;
}

/*******************
* 
* Sharpen thumbnails
* https://managewp.com/enhanced-performance-code-snippets
*
********************

function ajx_sharpen_resized_files( $resized_file ) {
 
    $image = wp_load_image( $resized_file );
    if ( !is_resource( $image ) )
        return new WP_Error( 'error_loading_image', $image, $file );
 
    $size = @getimagesize( $resized_file );
    if ( !$size )
        return new WP_Error('invalid_image', __('Could not read image size'), $file);
    list($orig_w, $orig_h, $orig_type) = $size;
 
    switch ( $orig_type ) {
        case IMAGETYPE_JPEG:
            $matrix = array(
                array(-1, -1, -1),
                array(-1, 16, -1),
                array(-1, -1, -1),
            );
 
            $divisor = array_sum(array_map('array_sum', $matrix));
            $offset = 0;
            imageconvolution($image, $matrix, $divisor, $offset);
            imagejpeg($image, $resized_file,apply_filters( 'jpeg_quality', 90, 'edit_image' ));
            break;
        case IMAGETYPE_PNG:
            return $resized_file;
        case IMAGETYPE_GIF:
            return $resized_file;
    }
 
    return $resized_file;
}  
 
add_filter('image_make_intermediate_size', 'ajx_sharpen_resized_files',900);




/*---------- Menu -------------*/






/*----------- Media Library -----------*/



/*---------- WIDGETS ---------*/

/********************************************
* Enable shortcodes in text widgets
* http://stephanieleary.com/2010/02/using-shortcodes-everywhere/
********************************************/

add_filter( 'widget_text', 'shortcode_unautop');
add_filter( 'widget_text', 'do_shortcode');


/**********************
* Enable PHP Scripts in text widgets
* http://andornagy.com/enable-scripts-and-shortcodes-in-wordpress-text-widgets/
***********************/
 
add_filter('widget_text', 'php_text', 99);
 
function php_text($text) {
 if (strpos($text, '<' . '?') !== false) {
 ob_start();
 eval('?' . '>' . $text);
 $text = ob_get_contents();
 ob_end_clean();
 }
 return $text;
}



 /*------- Avatar --------*/
 

/****************************************************************
* Add a new custom Gravatar to the bottom of the Settings -> Discussion section
* http://blogtimenow.com/wordpress/create-add-custom-default-avatar-wordpress-gravatar/
*
*********************************************************************/
add_filter( 'avatar_defaults', 'new_custom_default_gravatar' );
function new_custom_default_gravatar ($avatar_defaults) {
$myavatar = 'http://upload.wikimedia.org/wikipedia/commons/thumb/8/85/Smiley.svg/800px-Smiley.svg.png';
$avatar_defaults[$myavatar] = "Custom Default Gravatar";
return $avatar_defaults;
}


/**************************************************
* Custom avatar link added to the profile page.
* http://www.billerickson.net/wordpress-custom-avatar/
*
**************************************************
/**
 * Add Custom Avatar Field
 * @author Bill Erickson
 * @link http://www.billerickson.net/wordpress-custom-avatar/
 *
 * @param object $user
 */
function be_custom_avatar_field( $user ) { ?>
	<h3>Custom Avatar</h3>
	<table>
	<tr>
	<th><label for="be_custom_avatar"></label></th>
	<td>
	<input type="text" style="width: 100%;" name="be_custom_avatar" id="be_custom_avatar" value="<?php echo esc_attr( get_the_author_meta( 'be_custom_avatar', $user->ID ) ); ?>" />
	<span> <i>Type in the <b>URL</b> of the image you'd like to use as your avatar. <br /><strong>Image should be 70x70 pixels.</strong> <p>This will override your default Gravatar, or show up if you don't have a Gravatar. <br /></span>
	</td>
	</tr>
	</table>
	<?php 
}
add_action( 'show_user_profile', 'be_custom_avatar_field' );
add_action( 'edit_user_profile', 'be_custom_avatar_field' );
 
/**
 * Save Custom Avatar Field
 * @author Bill Erickson
 * @link http://www.billerickson.net/wordpress-custom-avatar/
 *
 * @param int $user_id
 */
function be_save_custom_avatar_field( $user_id ) {
	if ( !current_user_can( 'edit_user', $user_id ) ) { return false; }
		update_usermeta( $user_id, 'be_custom_avatar', $_POST['be_custom_avatar'] );
}
add_action( 'personal_options_update', 'be_save_custom_avatar_field' );
add_action( 'edit_user_profile_update', 'be_save_custom_avatar_field' );

function be_gravatar_filter($avatar, $id_or_email, $size, $default, $alt) {
	$custom_avatar = get_the_author_meta('be_custom_avatar');
	if ($custom_avatar) 
		$return = '<img src="'.$custom_avatar.'" width="'.$size.'" height="'.$size.'" alt="avatar" class="avatar" />';
	elseif ($avatar) 
		$return = $avatar;
	else 
		$return = '<img src="'.$default.'" width="'.$size.'" height="'.$size.'" alt="'.$alt.'" />';
 
	return $return;
}
add_filter('get_avatar', 'be_gravatar_filter', 10, 5);



/***************************************
*
* Remove default author profile fields 
* http://www.wpbeginner.com/wp-tutorials/25-extremely-useful-tricks-for-the-wordpress-functions-file/
*
******************************************/

add_filter('user_contactmethods','hide_profile_fields',10,1);
 
function hide_profile_fields( $contactmethods ) {
  unset($contactmethods['aim']);
  unset($contactmethods['jabber']);
  unset($contactmethods['yim']);
  return $contactmethods;
}


/***********************************************************
*
* Adding additional social media fields in profile settings
* http://andornagy.com/custom-profile-fields-wordpress/
*
*************************************************************/
   
add_filter('user_contactmethods', 'my_user_contactmethods');  
               
function my_user_contactmethods($user_contactmethods){  
  
  $user_contactmethods['facebook'] = 'Facebook URL';  
  $user_contactmethods['twitter'] = 'Twitter Username'; 
  $user_contactmethods['linked'] = 'Linkedin Username';  
  $user_contactmethods['google'] = 'Google Profile Link';  
  $user_contactmethods['youtube'] = 'Youtube Channel Name'; 
  $user_contactmethods['pinterest'] = 'Printerest Username';  
   
  
  return $user_contactmethods;  
}   

if ( get_the_author_meta( 'twitter' ) ) { 
    	the_author_meta( 'twitter' ); 
 
}     	
// End check for twitter 
  

if ( get_the_author_meta( 'facebook' ) ) { 
    	the_author_meta( 'facebook' ); 

}    	
// End check for facebook


/******************************
*
* Open Graph 
* http://www.paulund.co.uk/add-facebook-open-graph-tags-to-wordpress
*
* To get the correct title, description and image data to show when
* pasting a link to facebook.
*
* Test to see that it is working: 
* http://coveloping.com/tools/open-graph-tag-tester
*
*******************************/

// Facebook Open Graph
add_action('wp_head', 'add_fb_open_graph_tags');
function add_fb_open_graph_tags() {
	if (is_single()) {
		global $post;
		if(get_the_post_thumbnail($post->ID, 'thumbnail')) {
			$thumbnail_id = get_post_thumbnail_id($post->ID);
			$thumbnail_object = get_post($thumbnail_id);
			$image = $thumbnail_object->guid;
		} else {	
			$image = ''; // Change this to the URL of the logo you want beside your links shown on Facebook
		}
		//$description = get_bloginfo('description');
		$description = my_excerpt( $post->post_content, $post->post_excerpt );
		$description = strip_tags($description);
		$description = str_replace("\"", "'", $description);
?>
<meta property="og:title" content="<?php the_title(); ?>" />
<meta property="og:type" content="article" />
<meta property="og:image" content="<?php echo $image; ?>" />
<meta property="og:url" content="<?php the_permalink(); ?>" />
<meta property="og:description" content="<?php echo $description ?>" />
<meta property="og:site_name" content="<?php echo get_bloginfo('name'); ?>" />

<?php 	}
}

/***********************
*
* Excerpt - belonging to the above code
*
*************************/

function my_excerpt($text, $excerpt){
	
    if ($excerpt) return $excerpt;

    $text = strip_shortcodes( $text );

    $text = apply_filters('the_content', $text);
    $text = str_replace(']]>', ']]&gt;', $text);
    $text = strip_tags($text);
    $excerpt_length = apply_filters('excerpt_length', 55);
    $excerpt_more = apply_filters('excerpt_more', ' ' . '[...]');
    $words = preg_split("/[\n
	 ]+/", $text, $excerpt_length + 1, PREG_SPLIT_NO_EMPTY);
    if ( count($words) > $excerpt_length ) {
            array_pop($words);
            $text = implode(' ', $words);
            $text = $text . $excerpt_more;
    } else {
            $text = implode(' ', $words);
    }

    return apply_filters('wp_trim_excerpt', $text, $excerpt);
}




/***********
*
* Share on Facebook and Twitter not sure if it works or not.
*
*************

function share_this($content){
    if(!is_feed() && !is_home()) {
        $content .= '<div class="share-this">
                    <a href="http://twitter.com/share"
class="twitter-share-button"
data-count="horizontal">Tweet</a>
                    <script type="text/javascript"
src="http://platform.twitter.com/widgets.js"></script>
                    <div class="facebook-share-button">
                        <iframe
src="http://www.facebook.com/plugins/like.php?href='.
urlencode(get_permalink($post->ID))
.'&amp;layout=button_count&amp;show_faces=false&amp;width=200&amp;action=like&amp;colorscheme=light&amp;height=21"
scrolling="no" frameborder="0" style="border:none;
overflow:hidden; width:200px; height:21px;"
allowTransparency="true"></iframe>
                    </div>
                </div>';
    }
    return $content;
}
add_action('the_content', 'share_this');


/**********
*
* Google Plus to bottom of page.
*
****************

add_filter('the_content', 'google_plus');
function google_plus($content) {
	$content = $content.'<g:plusone size="tall" href="'.get_permalink().'"></g:plusone>';
	return $content;
}

add_action ('wp_enqueue_scripts', 'google_plus_script');
function google_plus_script () {
	wp_enqueue_script('google-plus', 'http://apis.google.com/js/plusone.js', array(), null);
}