带有聚合物错位的 PhotoSwipe
PhotoSwipe with Polymer misalignment
我正在尝试使用 Polymer, based on the Nav + List + Detail-layout example they have provided. For part of my web-app I want to make a photo gallery. Luckily, there's an element for that. Unfortunately, there's no element for that. So I set myself upon the task of making my own custom-element that provides this functionality, based on PhotoSwipe 制作一个小型网络应用程序。
所以我决定从简单的开始，只实现他们作为示例提供的代码 (see this CodePen). I simply copied this code into a custom element to see how it works, but unfortunately it doesn't work 100%. Here is the CodePen of the custom element.
对于小屏幕，照片显示正确，但当屏幕高时，第 3 和第 4 张照片不再居中，而是滑到右下角。最简单的查看方式是在查看图像时按全屏按钮。下面是一张图片，您可以清楚地看到右下角的偏移量。
我重新检查过，这在他们自己的 CodePen 中不是问题，但我似乎无法找到是否存在重叠样式或其他东西正在破坏它。有什么想法吗？
<dom-module id="photo-album">
<link rel="import" type="css" href="https://cdnjs.cloudflare.com/ajax/libs/photoswipe/4.1.0/photoswipe.css"> <!-- photoswipe/photoswipe.css -->
<link rel="import" type="css" href="https://cdnjs.cloudflare.com/ajax/libs/photoswipe/4.1.0/default-skin/default-skin.css"> <!-- photoswipe/default-skin/default-skin.css -->
<template>
<style>
:host {
display: block;
}
.my-gallery {
width: 100%;
float: left;
}
.my-gallery img {
width: 100%;
height: auto;
}
.my-gallery figure {
display: block;
float: left;
margin: 0 5px 5px 0;
width: 150px;
}
.my-gallery figcaption {
display: none;
}
</style>
<iron-ajax url="" params="" handle-as="json" last-response="{{photos}}"></iron-ajax>
<!--<template is="dom-repeat" items="{{photos}}">
<iron-image style="width:400px; height:400px; background-color: lightgray;" sizing="cover" preload fade src="{{item}}"></iron-image>
</template>-->
<div class="my-gallery" id="gallery" itemscope itemtype="http://schema.org/ImageGallery">
<figure itemprop="associatedMedia" itemscope itemtype="http://schema.org/ImageObject">
<a href="https://farm3.staticflickr.com/2567/5697107145_a4c2eaa0cd_o.jpg" itemprop="contentUrl" data-size="1024x1024">
<img src="https://farm3.staticflickr.com/2567/5697107145_3c27ff3cd1_m.jpg" itemprop="thumbnail" alt="Image description" />
</a>
</figure>
<figure itemprop="associatedMedia" itemscope itemtype="http://schema.org/ImageObject">
<a href="https://farm2.staticflickr.com/1043/5186867718_06b2e9e551_b.jpg" itemprop="contentUrl" data-size="964x1024">
<img src="https://farm2.staticflickr.com/1043/5186867718_06b2e9e551_m.jpg" itemprop="thumbnail" alt="Image description" />
</a>
</figure>
<figure itemprop="associatedMedia" itemscope itemtype="http://schema.org/ImageObject">
<a href="https://farm7.staticflickr.com/6175/6176698785_7dee72237e_b.jpg" itemprop="contentUrl" data-size="1024x683">
<img src="https://farm7.staticflickr.com/6175/6176698785_7dee72237e_m.jpg" itemprop="thumbnail" alt="Image description" />
</a>
</figure>
<figure itemprop="associatedMedia" itemscope itemtype="http://schema.org/ImageObject">
<a href="https://farm6.staticflickr.com/5023/5578283926_822e5e5791_b.jpg" itemprop="contentUrl" data-size="1024x768">
<img src="https://farm6.staticflickr.com/5023/5578283926_822e5e5791_m.jpg" itemprop="thumbnail" alt="Image description" />
</a>
</figure>
</div>
<div class="pswp" tabindex="-1" role="dialog" aria-hidden="true">
<div class="pswp__bg"></div>
<div class="pswp__scroll-wrap">
<div class="pswp__container">
<div class="pswp__item"></div>
<div class="pswp__item"></div>
<div class="pswp__item"></div>
</div>
<div class="pswp__ui pswp__ui--hidden">
<div class="pswp__top-bar">
<div class="pswp__counter"></div>
<button class="pswp__button pswp__button--close" title="Close (Esc)"></button>
<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>
</template>
<script src="https://cdnjs.cloudflare.com/ajax/libs/photoswipe/4.1.0/photoswipe.min.js"></script> <!-- photoswipe/photoswipe.min.js -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/photoswipe/4.1.0/photoswipe-ui-default.min.js"></script> <!-- photoswipe/photoswipe-ui-default.min.js -->
<script>
Polymer({
is: 'photo-album',
properties: {
items: {
type: Array,
notify: true,
}
},
ready: function() {
this.initPhotoSwipeFromDOM();
},
initPhotoSwipeFromDOM: function(){
var gallerySelector = this.$.gallery;
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;
}
options.showAnimationDuration = 0;
options.hideAnimationDuration = 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 = this.$.gallery;
galleryElements.setAttribute('data-pswp-uid', 1);
galleryElements.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 );
}
}
});
</script>
</dom-module>
您似乎缺少 photoswipe.css 中的样式。
我正在尝试使用 Polymer, based on the Nav + List + Detail-layout example they have provided. For part of my web-app I want to make a photo gallery. Luckily, there's an element for that. Unfortunately, there's no element for that. So I set myself upon the task of making my own custom-element that provides this functionality, based on PhotoSwipe 制作一个小型网络应用程序。
所以我决定从简单的开始，只实现他们作为示例提供的代码 (see this CodePen). I simply copied this code into a custom element to see how it works, but unfortunately it doesn't work 100%. Here is the CodePen of the custom element.
对于小屏幕，照片显示正确，但当屏幕高时，第 3 和第 4 张照片不再居中，而是滑到右下角。最简单的查看方式是在查看图像时按全屏按钮。下面是一张图片，您可以清楚地看到右下角的偏移量。
我重新检查过，这在他们自己的 CodePen 中不是问题，但我似乎无法找到是否存在重叠样式或其他东西正在破坏它。有什么想法吗？
<dom-module id="photo-album">
<link rel="import" type="css" href="https://cdnjs.cloudflare.com/ajax/libs/photoswipe/4.1.0/photoswipe.css"> <!-- photoswipe/photoswipe.css -->
<link rel="import" type="css" href="https://cdnjs.cloudflare.com/ajax/libs/photoswipe/4.1.0/default-skin/default-skin.css"> <!-- photoswipe/default-skin/default-skin.css -->
<template>
<style>
:host {
display: block;
}
.my-gallery {
width: 100%;
float: left;
}
.my-gallery img {
width: 100%;
height: auto;
}
.my-gallery figure {
display: block;
float: left;
margin: 0 5px 5px 0;
width: 150px;
}
.my-gallery figcaption {
display: none;
}
</style>
<iron-ajax url="" params="" handle-as="json" last-response="{{photos}}"></iron-ajax>
<!--<template is="dom-repeat" items="{{photos}}">
<iron-image style="width:400px; height:400px; background-color: lightgray;" sizing="cover" preload fade src="{{item}}"></iron-image>
</template>-->
<div class="my-gallery" id="gallery" itemscope itemtype="http://schema.org/ImageGallery">
<figure itemprop="associatedMedia" itemscope itemtype="http://schema.org/ImageObject">
<a href="https://farm3.staticflickr.com/2567/5697107145_a4c2eaa0cd_o.jpg" itemprop="contentUrl" data-size="1024x1024">
<img src="https://farm3.staticflickr.com/2567/5697107145_3c27ff3cd1_m.jpg" itemprop="thumbnail" alt="Image description" />
</a>
</figure>
<figure itemprop="associatedMedia" itemscope itemtype="http://schema.org/ImageObject">
<a href="https://farm2.staticflickr.com/1043/5186867718_06b2e9e551_b.jpg" itemprop="contentUrl" data-size="964x1024">
<img src="https://farm2.staticflickr.com/1043/5186867718_06b2e9e551_m.jpg" itemprop="thumbnail" alt="Image description" />
</a>
</figure>
<figure itemprop="associatedMedia" itemscope itemtype="http://schema.org/ImageObject">
<a href="https://farm7.staticflickr.com/6175/6176698785_7dee72237e_b.jpg" itemprop="contentUrl" data-size="1024x683">
<img src="https://farm7.staticflickr.com/6175/6176698785_7dee72237e_m.jpg" itemprop="thumbnail" alt="Image description" />
</a>
</figure>
<figure itemprop="associatedMedia" itemscope itemtype="http://schema.org/ImageObject">
<a href="https://farm6.staticflickr.com/5023/5578283926_822e5e5791_b.jpg" itemprop="contentUrl" data-size="1024x768">
<img src="https://farm6.staticflickr.com/5023/5578283926_822e5e5791_m.jpg" itemprop="thumbnail" alt="Image description" />
</a>
</figure>
</div>
<div class="pswp" tabindex="-1" role="dialog" aria-hidden="true">
<div class="pswp__bg"></div>
<div class="pswp__scroll-wrap">
<div class="pswp__container">
<div class="pswp__item"></div>
<div class="pswp__item"></div>
<div class="pswp__item"></div>
</div>
<div class="pswp__ui pswp__ui--hidden">
<div class="pswp__top-bar">
<div class="pswp__counter"></div>
<button class="pswp__button pswp__button--close" title="Close (Esc)"></button>
<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>
</template>
<script src="https://cdnjs.cloudflare.com/ajax/libs/photoswipe/4.1.0/photoswipe.min.js"></script> <!-- photoswipe/photoswipe.min.js -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/photoswipe/4.1.0/photoswipe-ui-default.min.js"></script> <!-- photoswipe/photoswipe-ui-default.min.js -->
<script>
Polymer({
is: 'photo-album',
properties: {
items: {
type: Array,
notify: true,
}
},
ready: function() {
this.initPhotoSwipeFromDOM();
},
initPhotoSwipeFromDOM: function(){
var gallerySelector = this.$.gallery;
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;
}
options.showAnimationDuration = 0;
options.hideAnimationDuration = 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 = this.$.gallery;
galleryElements.setAttribute('data-pswp-uid', 1);
galleryElements.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 );
}
}
});
</script>
</dom-module>
您似乎缺少 photoswipe.css 中的样式。