Alexey Boroda / kristal-estet

<?php
    /**
     * @var View    $this
     * @var Image[] $images
     */
    
    use artbox\core\helpers\ImageHelper;
    use artbox\core\models\Image;
    use modernkernel\photoswipe\PhotoswipeAsset;
    use yii\web\View;
    
    PhotoswipeAsset::register($this);

?>

<div id="content">
    <div class="container">
        <div class="row">
            <div class="col-md-12">
                <div class="heading">
                    <h2>Галерея</h2>
                </div>
                <div class="my-gallery" itemscope itemtype="http://schema.org/ImageGallery">
                    <?php foreach ($images as $image) {
                        if (file_exists(\Yii::getAlias('@storage/' . $image->id . '_' . $image->fileHash . '.' . $image->extension))) {
                            ?>
                            <figure class="reviews_gallery">
                                <a href="<?= $image->getUrl() ?>" itemprop="contentUrl" data-size="<?= getimagesize(
                                    $image->getPath()
                                )[ 0 ] . 'x' . getimagesize(
                                    $image->getPath()
                                )[ 1 ] ?>">
                                    <img src="<?= ImageHelper::set($image->getPath())
                                        ->cropResize(500, 325)
                                        ->render() ?>" itemprop="thumbnail" alt=""/>
                                </a>
                            </figure>
                            <?php
                        }
                    }
                    ?>
                </div>
            </div>
        </div>
    </div>
</div>

<div class="pswp" tabindex="-1" role="dialog" aria-hidden="true">
  
  <!-- Background of PhotoSwipe.
       It's a separate element as animating opacity is faster than rgba(). -->
  <div class="pswp__bg"></div>
  
  <!-- Slides wrapper with overflow:hidden. -->
  <div class="pswp__scroll-wrap">
    
    <!-- Container that holds slides.
        PhotoSwipe keeps only 3 of them in the DOM to save memory.
        Don't modify these 3 pswp__item elements, data is added later on. -->
    <div class="pswp__container">
      <div class="pswp__item"></div>
      <div class="pswp__item"></div>
      <div class="pswp__item"></div>
    </div>
    
    <!-- Default (PhotoSwipeUI_Default) interface on top of sliding area. Can be changed. -->
    <div class="pswp__ui pswp__ui--hidden">
      
      <div class="pswp__top-bar">
        
        <!--  Controls are self-explanatory. Order can be changed. -->
        
        <div class="pswp__counter"></div>
        
        <button class="pswp__button pswp__button--close" title="Close (Esc)"></button>
        
        <button class="pswp__button pswp__button--share" title="Share"></button>
        
        <button class="pswp__button pswp__button--fs" title="Toggle fullscreen"></button>
        
        <button class="pswp__button pswp__button--zoom" title="Zoom in/out"></button>
        
        <!-- Preloader demo http://codepen.io/dimsemenov/pen/yyBWoR -->
        <!-- element will get class pswp__preloader--active when preloader is running -->
        <div class="pswp__preloader">
          <div class="pswp__preloader__icn">
            <div class="pswp__preloader__cut">
              <div class="pswp__preloader__donut"></div>
            </div>
          </div>
        </div>
      </div>
      
      <div class="pswp__share-modal pswp__share-modal--hidden pswp__single-tap">
        <div class="pswp__share-tooltip"></div>
      </div>
      
      <button class="pswp__button pswp__button--arrow--left" title="Previous (arrow left)">
      </button>
      
      <button class="pswp__button pswp__button--arrow--right" title="Next (arrow right)">
      </button>
      
      <div class="pswp__caption">
        <div class="pswp__caption__center"></div>
      </div>
    
    </div>
  
  </div>

</div>

<script>
    var initPhotoSwipeFromDOM = function(gallerySelector) {

        // parse slide data (url, title, size ...) from DOM elements
        // (children of gallerySelector)
        var parseThumbnailElements = function(el) {
            var thumbElements = el.childNodes, numNodes = thumbElements.length, items = [], figureEl, linkEl, size, item;

            for (var i = 0; i < numNodes; i++) {

                figureEl = thumbElements[ i ]; // <figure> element

                // include only element nodes
                if (figureEl.nodeType !== 1) {
                    continue;
                }

                linkEl = figureEl.children[ 0 ]; // <a> element

                size = linkEl.getAttribute('data-size')
                             .split('x');

                // create slide object
                item = {
                    src: linkEl.getAttribute('href'),
                    w: parseInt(size[ 0 ], 10),
                    h: parseInt(size[ 1 ], 10)
                };

                if (figureEl.children.length > 1) {
                    // <figcaption> content
                    item.title = figureEl.children[ 1 ].innerHTML;
                }

                if (linkEl.children.length > 0) {
                    // <img> thumbnail element, retrieving thumbnail url
                    item.msrc = linkEl.children[ 0 ].getAttribute('src');
                }

                item.el = figureEl; // save link to element for getThumbBoundsFn
                items.push(item);
            }

            return items;
        };

        // find nearest parent element
        var closest = function closest(el, fn) {
            return el && ( fn(el) ? el : closest(el.parentNode, fn) );
        };

        // triggers when user clicks on thumbnail
        var onThumbnailsClick = function(e) {
            e = e || window.event;
            e.preventDefault ? e.preventDefault() : e.returnValue = false;

            var eTarget = e.target || e.srcElement;

            // find root element of slide
            var clickedListItem = closest(
                eTarget, function(el) {
                    return (el.tagName && el.tagName.toUpperCase() === 'FIGURE');
                }
            );

            if (!clickedListItem) {
                return;
            }

            // find index of clicked item by looping through all child nodes
            // alternatively, you may define index via data- attribute
            var clickedGallery = clickedListItem.parentNode, childNodes = clickedListItem.parentNode.childNodes, numChildNodes = childNodes.length, nodeIndex = 0, index;

            for (var i = 0; i < numChildNodes; i++) {
                if (childNodes[ i ].nodeType !== 1) {
                    continue;
                }

                if (childNodes[ i ] === clickedListItem) {
                    index = nodeIndex;
                    break;
                }
                nodeIndex++;
            }

            if (index >= 0) {
                // open PhotoSwipe if valid index found
                openPhotoSwipe(index, clickedGallery);
            }
            return false;
        };

        // parse picture index and gallery index from URL (#&pid=1&gid=2)
        var photoswipeParseHash = function() {
            var hash = window.location.hash.substring(1), params = {};

            if (hash.length < 5) {
                return params;
            }

            var vars = hash.split('&');
            for (var i = 0; i < vars.length; i++) {
                if (!vars[ i ]) {
                    continue;
                }
                var pair = vars[ i ].split('=');
                if (pair.length < 2) {
                    continue;
                }
                params[ pair[ 0 ] ] = pair[ 1 ];
            }

            if (params.gid) {
                params.gid = parseInt(params.gid, 10);
            }

            return params;
        };

        var openPhotoSwipe = function(index, galleryElement, disableAnimation, fromURL) {
            var pswpElement = document.querySelectorAll('.pswp')[ 0 ], gallery, options, items;

            items = parseThumbnailElements(galleryElement);

            // define options (if needed)
            options = {

                // define gallery index (for URL)
                galleryUID: galleryElement.getAttribute('data-pswp-uid'),

                getThumbBoundsFn: function(index) {
                    // See Options -> getThumbBoundsFn section of documentation for more info
                    var thumbnail = items[ index ].el.getElementsByTagName('img')[ 0 ], // find thumbnail
                        pageYScroll = window.pageYOffset || document.documentElement.scrollTop, rect = thumbnail.getBoundingClientRect();

                    return {
                        x: rect.left,
                        y: rect.top + pageYScroll,
                        w: rect.width
                    };
                }

            };

            // PhotoSwipe opened from URL
            if (fromURL) {
                if (options.galleryPIDs) {
                    // parse real index when custom PIDs are used
                    // http://photoswipe.com/documentation/faq.html#custom-pid-in-url
                    for (var j = 0; j < items.length; j++) {
                        if (items[ j ].pid == index) {
                            options.index = j;
                            break;
                        }
                    }
                } else {
                    // in URL indexes start from 1
                    options.index = parseInt(index, 10) - 1;
                }
            } else {
                options.index = parseInt(index, 10);
            }

            // exit if index not found
            if (isNaN(options.index)) {
                return;
            }

            if (disableAnimation) {
                options.showAnimationDuration = 0;
            }

            // Pass data to PhotoSwipe and initialize it
            gallery = new PhotoSwipe(pswpElement, PhotoSwipeUI_Default, items, options);
            gallery.init();
        };

        // loop through all gallery elements and bind events
        var galleryElements = document.querySelectorAll(gallerySelector);

        for (var i = 0, l = galleryElements.length; i < l; i++) {
            galleryElements[ i ].setAttribute('data-pswp-uid', i + 1);
            galleryElements[ i ].onclick = onThumbnailsClick;
        }

        // Parse URL and open gallery if it contains #&pid=3&gid=1
        var hashData = photoswipeParseHash();
        if (hashData.pid && hashData.gid) {
            openPhotoSwipe(hashData.pid, galleryElements[ hashData.gid - 1 ], true, true);
        }
    };

    // execute above function
    initPhotoSwipeFromDOM('.my-gallery');
</script>