initial

assets/css/sravnitel.css

+.sravnitel img{
+  max-width:none;
+}
+
+.sravnitel table{
+  display: table;
+  border-spacing: 2px;
+  box-sizing: unset;
+  -webkit-box-sizing:unset;
+  font-size: 1em;
+}
+
+.sravnitel th{
+  font-weight:bold;
+  text-align:center;
+  padding:0px;
+}
+
+.sravnitel td{
+  padding: 1px 1px 1px 1px;
+  line-height:1;
+}
+
+.sravnitel .divider_handle {
+  background-image: url('../images/handle_gray.png');
+}
+
+.sravnitel {
+  background:white;
+}

assets/js/jquery-ui-1.12.1/LICENSE.txt

+Copyright jQuery Foundation and other contributors, https://jquery.org/
+
+This software consists of voluntary contributions made by many
+individuals. For exact contribution history, see the revision history
+available at https://github.com/jquery/jquery-ui
+
+The following license applies to all parts of this software except as
+documented below:
+
+====
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+====
+
+Copyright and related rights for sample code are waived via CC0. Sample
+code is defined as all source code contained within the demos directory.
+
+CC0: http://creativecommons.org/publicdomain/zero/1.0/
+
+====
+
+All files located in the node_modules and external directories are
+externally maintained libraries used by this software which have their
+own licenses; we recommend you read them, as their terms may differ from
+the terms above.

assets/js/jquery-ui-1.12.1/package.json

+{
+	"name": "jquery-ui",
+	"title": "jQuery UI",
+	"description": "A curated set of user interface interactions, effects, widgets, and themes built on top of the jQuery JavaScript Library.",
+	"version": "1.12.1",
+	"homepage": "http://jqueryui.com",
+	"author": {
+		"name": "jQuery Foundation and other contributors",
+		"url": "https://github.com/jquery/jquery-ui/blob/1.12.1/AUTHORS.txt"
+	},
+	"main": "ui/widget.js",
+	"maintainers": [
+		{
+			"name": "Scott González",
+			"email": "scott.gonzalez@gmail.com",
+			"url": "http://scottgonzalez.com"
+		},
+		{
+			"name": "Jörn Zaefferer",
+			"email": "joern.zaefferer@gmail.com",
+			"url": "http://bassistance.de"
+		},
+		{
+			"name": "Mike Sherov",
+			"email": "mike.sherov@gmail.com",
+			"url": "http://mike.sherov.com"
+		},
+		{
+			"name": "TJ VanToll",
+			"email": "tj.vantoll@gmail.com",
+			"url": "http://tjvantoll.com"
+		},
+		{
+			"name": "Felix Nagel",
+			"email": "info@felixnagel.com",
+			"url": "http://www.felixnagel.com"
+		},
+		{
+			"name": "Alex Schmitz",
+			"email": "arschmitz@gmail.com",
+			"url": "https://github.com/arschmitz"
+		}
+	],
+	"repository": {
+		"type": "git",
+		"url": "git://github.com/jquery/jquery-ui.git"
+	},
+	"bugs": "https://bugs.jqueryui.com/",
+	"license": "MIT",
+	"scripts": {
+		"test": "grunt"
+	},
+	"dependencies": {},
+	"devDependencies": {
+		"commitplease": "2.3.0",
+		"grunt": "0.4.5",
+		"grunt-bowercopy": "1.2.4",
+		"grunt-cli": "0.1.13",
+		"grunt-compare-size": "0.4.0",
+		"grunt-contrib-concat": "0.5.1",
+		"grunt-contrib-csslint": "0.5.0",
+		"grunt-contrib-jshint": "0.12.0",
+		"grunt-contrib-qunit": "1.0.1",
+		"grunt-contrib-requirejs": "0.4.4",
+		"grunt-contrib-uglify": "0.11.1",
+		"grunt-git-authors": "3.1.0",
+		"grunt-html": "6.0.0",
+		"grunt-jscs": "2.1.0",
+		"load-grunt-tasks": "3.4.0",
+		"rimraf": "2.5.1",
+		"testswarm": "1.1.0"
+	},
+	"keywords": []
+}

inc/enqueue.php

+<?php
+/**
+ * @file enqueue.php
+ * @brief shortcodes
+ * @copyright Copyright (C) 2017 Elphel Inc.
+ * @author Oleg Dzhimiev <oleg@elphel.com>
+ *
+ * @par <b>License</b>:
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+function sravnitel_enqueue_script($hook){
+
+  wp_enqueue_style( 'style1', SRAVNITEL_URL.'/assets/css/sravnitel.css');
+  
+  //wp_enqueue_script( 'script1', SRAVNITEL_URL.'/assets/js/jquery-3.1.1.js', array( 'jquery' ));
+  wp_enqueue_script( 'script2', SRAVNITEL_URL.'/assets/js/jquery.sravnitel.js', array( 'jquery' ));
+  wp_enqueue_script( 'script3', SRAVNITEL_URL.'/assets/js/jquery-ui-1.12.1/jquery-ui.js', array( 'jquery' ));
+
+}
+
+add_action( 'wp_enqueue_scripts', 'sravnitel_enqueue_script');
+
+?>

inc/shortcode.php

+<?php
+/**
+ * @file shortcode.php
+ * @brief shortcodes
+ * @copyright Copyright (C) 2017 Elphel Inc.
+ * @author Oleg Dzhimiev <oleg@elphel.com>
+ *
+ * @par <b>License</b>:
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+function sravnitel_init(){
+  function sravnitel_shortcode($atts,$content=null,$tag=''){
+  
+    // from the: https://developer.wordpress.org/plugins/shortcodes/shortcodes-with-parameters/
+    
+    // normalize attribute keys, lowercase
+    $atts = array_change_key_case((array)$atts, CASE_LOWER);
+  
+    // override default attributes with user attributes
+    
+    $defaults = Array(
+      'id' => 0,
+      'images' => '',
+      'showtitles' => false,
+      'width' => 530,
+      'height' => 300,
+      'index_l' => 0,
+      'index_r' => 1,
+      'zoom' => 0,
+      'center_x' => 0,
+      'center_y' => 0
+    );
+    
+    $sravnitel_atts = shortcode_atts($defaults, $atts, $tag);
+  
+    $images = explode(",",$sravnitel_atts['images']);
+  
+    $titles = Array();
+  
+    $images_urls = Array();
+  
+    $content = "";
+  
+    foreach($images as $img){
+      $img = intval(trim($img));
+      array_push($images_urls,wp_get_attachment_url($img));
+      
+      $img_info= wp_get_attachment($img);
+      
+      if (trim($img_info['description'])==""){
+        array_push($titles,$img_info['title']);
+      }else{
+        array_push($titles,$img_info['description']);
+      }
+      
+    }
+  
+    //echo "<p>testing defaults: {$sravnitel_atts['index_l']}</p>";
+  
+    $id_str = "sravnitel_{$sravnitel_atts['id']}";
+    $images_str = "[\"".implode("\",\"",$images_urls)."\"]";
+    $titles_str = "[\"".implode("\",\"",$titles)."\"]";
+    
+    if (!$sravnitel_atts['showtitles']){
+      $showtitles_str = "false";
+    }else{
+      $showtitles_str = "true";
+    }
+    
+    $content = "<b>$titles_str</b>";
+    
+    $content = <<<TXT
+<div id="$id_str" style="position:relative;" class="sravnitel"></div>
+<script>
+  jQuery(window).load(function(){
+    jQuery("#$id_str").sravnitel({
+      images: $images_str,
+      titles: $titles_str,
+      showtitles: $showtitles_str,
+      width: {$sravnitel_atts['width']},
+      height: {$sravnitel_atts['height']},
+      index_l: {$sravnitel_atts['index_l']},
+      index_r: {$sravnitel_atts['index_r']},
+      zoom: {$sravnitel_atts['zoom']},
+      center_x: {$sravnitel_atts['center_x']},
+      center_y: {$sravnitel_atts['center_y']},
+    });
+  });
+</script>
+TXT;
+
+    return $content;
+  }
+  
+  add_shortcode('sravnitel',sravnitel_shortcode);
+  
+  function wp_get_attachment( $attachment_id ) {
+  
+    $attachment = get_post( $attachment_id );
+    
+    return array(
+      'alt' => get_post_meta( $attachment->ID, '_wp_attachment_image_alt', true ),
+      'caption' => $attachment->post_excerpt,
+      'description' => $attachment->post_content,
+      'href' => get_permalink( $attachment->ID ),
+      'src' => $attachment->guid,
+      'title' => $attachment->post_title
+    );
+    
+  }
+  
+}
+
+?>
\ No newline at end of file

sravnitel.php

+<?php
+/**
+ * @package Sravnitel
+ * @version 1.0
+ * @file sravnitel.php
+ * @brief shortcodes
+ * @copyright Copyright (C) 2017 Elphel Inc.
+ * @author Oleg Dzhimiev <oleg@elphel.com>
+ *
+ * @par <b>License</b>:
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/*
+Plugin Name: Sravnitel
+Plugin URI: http://wordpress.org/plugins/sravnitel/
+Description: Before-After overlayed image comparison plugin with: slider, zoom, 2+ images.
+Author: Oleg Dzhimiev
+Version: 1.0
+Author URI: http://www3.elphel.com
+*/
+
+defined('ABSPATH') or die('No script kiddies please!');
+
+define('SRAVNITEL_URL',plugins_url('', __FILE__ ));
+
+add_action( 'init', 'sravnitel_init' );
+
+include_once('inc/enqueue.php');
+include_once('inc/shortcode.php');