protected function content($atts, $content = null)
 {
     extract(shortcode_atts(array('images' => '', 'img_width' => '9999', 'img_height' => '9999', 'columns' => 4, 'grid_style' => '', 'thumbnail_link' => '', 'custom_links' => '', 'custom_links_target' => '_self', 'title' => false, 'black_white' => false, 'el_id' => '', 'el_class' => '', 'css_animation' => '', 'anim_type' => '', 'anim_delay' => '', 'css' => ''), $atts));
     $sc_class = 'wt_gallery_grid_sc';
     // Img Container Classes
     $sc_classes = array();
     // Adding placeholder images if no image was set
     if ($images == '') {
         switch ($columns) {
             case 1:
                 $images = '-1';
                 break;
             case 2:
                 $images = '-1,-2';
                 break;
             case 3:
                 $images = '-1,-2,-3';
                 break;
             case 4:
                 $images = '-1,-2,-3,-4';
                 break;
             case 6:
             default:
                 $images = '-1,-2,-3,-4,-5,-6';
                 break;
         }
     }
     // Get Attachments
     $images = explode(',', $images);
     $i = -1;
     $id = mt_rand(9999, 99999);
     if (trim($el_id) != false) {
         $el_id = esc_attr(trim($el_id));
     } else {
         $el_id = $sc_class . '-' . $id;
     }
     // Custom Links
     if ($thumbnail_link == 'custom_link') {
         $custom_links = explode(',', $custom_links);
     }
     // Column Class
     if ($columns == '1') {
         $sc_classes[] = 'wt_gallery_1_col';
     } else {
         $sc_classes[] = 'wt_gallery_' . $columns . '_cols';
     }
     // Lightbox Class
     if ($thumbnail_link == 'lightbox') {
         $sc_classes[] = 'wt_gallery_lightbox';
     }
     // No Margin Class
     if ($grid_style == 'no-margins') {
         $sc_classes[] = 'wt_gallery_no_margins clearfix';
     } else {
         $sc_classes[] = 'row';
     }
     $sc_classes = implode(' ', $sc_classes);
     if ($sc_classes != '') {
         $sc_classes = ' ' . $sc_classes;
     }
     $sc_class = $sc_class . $sc_classes;
     $el_class = esc_attr($this->getExtraClass($el_class));
     $css_class = apply_filters(VC_SHORTCODE_CUSTOM_CSS_FILTER_TAG, $sc_class . $el_class . vc_shortcode_custom_css_class($css, ' '), $this->settings['base']);
     //$css_class .= $this->wt_sc->getWTCSSAnimationClass($css_animation,$anim_type);
     //$anim_data = $this->wt_sc->getWTCSSAnimationData($css_animation,$anim_delay);
     // Load prettyphoto scripts & styles
     if ($thumbnail_link == 'lightbox') {
         wp_enqueue_script('prettyphoto');
         wp_enqueue_style('prettyphoto');
     }
     // Output posts
     if ($images) {
         // Img Container Classes
         $classes = array();
         switch ($columns) {
             case 1:
                 $classes[] = 'col-xs-12 col-sm-12 col-lg-12 col-md-12';
                 break;
             case 2:
                 $classes[] = 'col-xs-6 col-sm-6 col-md-6 col-lg-6';
                 break;
             case 3:
                 $classes[] = 'col-xs-6 col-sm-6 col-md-4 col-lg-4';
                 break;
             case 4:
                 $classes[] = 'col-xs-6 col-sm-6 col-md-3 col-lg-3';
                 break;
             case 6:
             default:
                 $classes[] = 'col-xs-6 col-sm-6 col-md-2 col-lg-2';
                 break;
         }
         if ($black_white == 'yes') {
             $classes[] = 'wt_grayscale';
         }
         $classes = implode(' ', $classes);
         wp_enqueue_script('waypoints');
         // VC file
         $output = '<div id="' . $el_id . '" class="' . $css_class . '">';
         $count = 0;
         foreach ($images as $attach_id) {
             $image_output = '';
             $i++;
             $delay = $count * 150;
             $count++;
             // if image alt not set then take it's title
             $attachment_meta = WT_WpGetAttachment($attach_id);
             if (!empty($attachment_meta['alt'])) {
                 $img_title = $attachment_meta['alt'];
             } else {
                 $img_title = $attachment_meta['title'];
             }
             $img = $attachment_meta['src'];
             //$img = wp_get_attachment_url( $attach_id );
             if ('9999' != $img_width && '9999' != $img_height) {
                 $width_inline = $img_width;
                 $height_inline = $img_height;
             } else {
                 $image_meta = wp_get_attachment_image_src($attach_id, 'full', true);
                 $width_inline = $image_meta[1];
                 // get original image width
                 $height_inline = $image_meta[2];
                 // get original image height
             }
             if ($grid_style == 'no-margins') {
                 $imgThumb = '';
             } else {
                 $imgThumb = ' class="img-thumbnail"';
             }
             if ($attach_id > 0) {
                 // Crop featured images if necessary
                 if (function_exists('aq_resize')) {
                     $thumb_hard_crop = '9999' == $img_height ? false : true;
                     $cropped_img = aq_resize($img, $img_width, $img_height, $thumb_hard_crop);
                 }
                 $img_output = '<img' . $imgThumb . ' src="' . $cropped_img . '" width="' . $width_inline . '" height="' . $height_inline . '" alt="' . $img_title . '" />';
             } else {
                 // If no image was set then show placeholders
                 $img_output = '<img' . $imgThumb . ' src="' . vc_asset_url('vc/no_image.png') . '" />';
             }
             // Image output	depending of image link
             if ($thumbnail_link == 'lightbox') {
                 $image_output .= $img_output;
                 $icon = '<i class="entypo-search"></i>';
                 $image_output .= '<div class="wt_gallery_overlay">';
                 $image_output .= '<a href="' . $img . '" title="' . $img_title . '" class="wt_image_zoom" data-rel="lightbox[gallery_' . $id . ']">' . $icon . '</a>';
                 if ($title == 'yes') {
                     $image_output .= '<h3>' . $img_title . '</h3>';
                 }
                 $image_output .= '</div>';
             } elseif ($thumbnail_link == 'custom_link') {
                 $custom_link = !empty($custom_links[$i]) ? $custom_links[$i] : '#';
                 if ($custom_link == '#') {
                     $image_output .= $img_output;
                 } else {
                     $image_output .= '<a href="' . $custom_link . '" title="' . $img_title . '" target="' . $custom_links_target . '">';
                     $image_output .= $img_output;
                     $image_output .= '</a>';
                 }
             } else {
                 $image_output .= $img_output;
             }
             $output .= '<article class="wt_gallery_grid_item ' . $classes . ' wt_col_' . $count . ' wt_animate wt_animate_if_visible" data-animation="flipInX" data-animation-delay="' . $delay . '">';
             $output .= "\n\t" . '<div class="wt_gallery_item_inner">';
             $output .= "\n\t\t" . $image_output;
             $output .= "\n\t" . '</div>';
             $output .= '</article>';
             if ($count == $columns) {
                 $count = 0;
             }
             // reset column number
         }
         $output .= '</div>';
     }
     // End has posts check
     // Reset query
     wp_reset_postdata();
     return $output;
 }
 protected function content($atts, $content = null)
 {
     extract(shortcode_atts(array('images' => '', 'img_size' => 'thumbnail', 'type' => 'simple', 'columns' => 6, 'hover_border' => false, 'black_white' => false, 'tooltip' => false, 'tooltip_placement' => 'top', 'custom_links' => false, 'custom_links_textarea' => '', 'custom_links_target' => '_self', 'owl_speed' => 600, 'owl_pagspeed' => 1000, 'owl_autoplay' => 'false', 'owl_stoponhover' => 'false', 'owl_navigation' => 'false', 'owl_pagination' => 'false', 'owl_items' => 6, 'owl_itemsdesktop' => 4, 'owl_itemssmalldesktop' => 4, 'owl_itemstablet' => 3, 'owl_itemsmobile' => 2, 'owl_itemsmobilesmall' => 1, 'el_id' => '', 'el_class' => '', 'css_animation' => '', 'anim_type' => '', 'anim_delay' => '', 'css' => ''), $atts));
     $gal_images = '';
     $link_start = '';
     $link_end = '';
     $owl_speed = (int) $owl_speed;
     $owl_pagspeed = (int) $owl_pagspeed;
     $owl_autoplay = esc_attr($owl_autoplay);
     $owl_stoponhover = esc_attr($owl_stoponhover);
     $owl_navigation = esc_attr($owl_navigation);
     $owl_pagination = esc_attr($owl_pagination);
     $owl_items = (int) $owl_items;
     $owl_itemsdesktop = (int) $owl_itemsdesktop;
     $owl_itemssmalldesktop = (int) $owl_itemssmalldesktop;
     $owl_itemstablet = (int) $owl_itemstablet;
     $owl_itemsmobile = (int) $owl_itemsmobile;
     $owl_itemsmobilesmall = (int) $owl_itemsmobilesmall;
     if ($images == '') {
         $images = '-1,-2,-3';
     }
     // adding placeholder images if no image was set
     if ($custom_links == true) {
         $custom_links_textarea = explode(',', $custom_links_textarea);
     }
     $images = explode(',', $images);
     $i = -1;
     $count = 0;
     $sc_class = 'wt_clients_sc';
     $id = mt_rand(9999, 99999);
     if (trim($el_id) != false) {
         $el_id = esc_attr(trim($el_id));
     } else {
         $el_id = $sc_class . '-' . $id;
     }
     $img_size = esc_html($img_size);
     if ($type == 'simple') {
         $carousel = '';
     } else {
         wp_print_scripts('owlCarousel');
         $carousel = ' wt_owl_carousel ';
     }
     $sc_class .= ' wt_align_center' . $carousel;
     $el_class = esc_attr($this->getExtraClass($el_class));
     $css_class = apply_filters(VC_SHORTCODE_CUSTOM_CSS_FILTER_TAG, $sc_class . $el_class . vc_shortcode_custom_css_class($css, ' '), $this->settings['base']);
     $css_class .= $this->wt_sc->getWTCSSAnimationClass($css_animation, $anim_type);
     $anim_data = $this->wt_sc->getWTCSSAnimationData($css_animation, $anim_delay);
     switch ($columns) {
         case 3:
             $col_out = ' col-xs-4 col-sm-4 col-md-4 col-lg-4';
             break;
         case 4:
             $col_out = ' col-xs-4 col-sm-4 col-md-3 col-lg-3';
             break;
         case 6:
         default:
             $col_out = ' col-xs-4 col-sm-4 col-md-2 col-lg-2';
             break;
     }
     if ($hover_border == true) {
         $hover_border = ' wt_client_border';
     } else {
         $hover_border = '';
     }
     if ($black_white == true) {
         $black_white = ' wt_grayscale';
     } else {
         $black_white = '';
     }
     if ($tooltip == true) {
         $tooltip_out = '  data-toggle="tooltip" data-placement="' . $tooltip_placement . '"';
     } else {
         $tooltip_out = '';
     }
     if ($type == 'simple') {
         wp_enqueue_script('waypoints');
         // VC file
         $carousel_data = '';
     } else {
         $carousel_data = '  data-owl-speed="' . $owl_speed . '" data-owl-pagSpeed="' . $owl_pagspeed . '" data-owl-autoPlay="' . $owl_autoplay . '" data-owl-stopOnHover="' . $owl_stoponhover . '" data-owl-navigation="' . $owl_navigation . '" data-owl-pagination="' . $owl_pagination . '" data-owl-items="' . $owl_items . '" data-owl-itemsDesktop="' . $owl_itemsdesktop . '" data-owl-itemsSmallDesktop="' . $owl_itemssmalldesktop . '" data-owl-itemsTablet="' . $owl_itemstablet . '" data-owl-itemsMobile="' . $owl_itemsmobile . '" data-owl-itemsMobileSmall="' . $owl_itemsmobilesmall . '"';
     }
     $output = '<div id="' . $el_id . '" class="' . $css_class . '"' . $anim_data . $carousel_data . '>';
     foreach ($images as $attach_id) {
         $i++;
         $count++;
         $delay = $count * 100;
         if ($attach_id > 0) {
             $img = wpb_getImageBySize(array('attach_id' => $attach_id, 'thumb_size' => $img_size));
         } else {
             $img = array();
             $img['thumbnail'] = '<img src="' . vc_asset_url('vc/no_image.png') . '" />';
         }
         $img_output = $img['thumbnail'];
         // if image caption not set then take it's title
         $attachment_meta = WT_WpGetAttachment($attach_id);
         if (!empty($attachment_meta['caption'])) {
             $img_title = $attachment_meta['caption'];
         } else {
             $img_title = $attachment_meta['title'];
         }
         // output for client image
         if ($custom_links == true && isset($custom_links_textarea[$i]) && $custom_links_textarea[$i] != '') {
             $output_image = '<a href="' . $custom_links_textarea[$i] . '"' . ' title="' . $img_title . '"' . ' target="' . $custom_links_target . '"' . $tooltip_out . '>' . $img_output . '</a>';
         } elseif ($tooltip == true) {
             $output_image = '<a href="#"' . $tooltip_out . ' title="' . $img_title . '">' . $img_output . '</a>';
         } else {
             $output_image = $img_output;
         }
         // display simple images or with custom links
         if ($type == 'simple') {
             $output .= '<div class="wt_client' . $hover_border . $black_white . $col_out . ' wt_animate wt_animate_if_visible" data-animation="fadeInUp" data-animation-delay="' . $delay . '">';
             $output .= "\n\t" . $output_image;
             $output .= '</div>';
         } else {
             $output .= "\n\t" . '<div class="wt_client item' . $hover_border . $black_white . '">';
             $output .= "\n\t\t" . $output_image;
             $output .= "\n\t" . '</div>';
         }
         if ($count == $columns) {
             $count = 0;
         }
         // reset column number
     }
     $output .= '</div>';
     return $output;
 }