From 3d85b0926a4f969bcf213409153bd6db814e2940 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=B2=88=E5=AE=87?= <448766534@qq.com>
Date: Mon, 20 Jan 2020 15:09:23 +0800
Subject: [PATCH] feat: Support image display fullscreen

---
 _config.yml                      |   3 +
 layout/_partial/after-footer.ejs |  50 ++++++++-------
 layout/_partial/viewer.ejs       | 106 +++++++++++++++++++++++++++++++
 3 files changed, 135 insertions(+), 24 deletions(-)
 create mode 100644 layout/_partial/viewer.ejs

diff --git a/_config.yml b/_config.yml
index 2737c7a..11e0198 100644
--- a/_config.yml
+++ b/_config.yml
@@ -36,6 +36,9 @@ nav_text:
 # 文章页是否显示目录
 toc: true
 
+# 文章中的图片是否支持点击放大
+image_viewer: true
+
 # https://github.com/willin/hexo-wordcount
 # 是否开启字数统计(关闭请设置enable为false)
 # 也可以单独在md文件里Front-matter设置`no_word_count: true`属性，来自定义关闭字数统计
diff --git a/layout/_partial/after-footer.ejs b/layout/_partial/after-footer.ejs
index 0d3dec2..90fc783 100644
--- a/layout/_partial/after-footer.ejs
+++ b/layout/_partial/after-footer.ejs
@@ -3,28 +3,28 @@
 <%- js('/js/lazyload.min') %>
 <%- js('/js/busuanzi-2.3.pure.min') %>
 <% if (theme.fancybox){ %>
-  <%- js('fancybox/jquery.fancybox.min') %>
+<%- js('fancybox/jquery.fancybox.min') %>
 <% } %>
 
 <% if (theme.toc && is_post()){ %>
-  <%- js('/js/tocbot.min') %>
-  <script>
-    // Tocbot_v4.7.0  http://tscanlin.github.io/tocbot/
-    tocbot.init({
-      tocSelector: '.tocbot',
-      contentSelector: '.article-entry',
-      headingSelector: 'h1, h2, h3, h4, h5, h6',
-      hasInnerContainers: true,
-      scrollSmooth: true,
-      positionFixedSelector: '.tocbot',
-      positionFixedClass: 'is-position-fixed',
-      fixedSidebarOffset: 'auto',
-			onClick: (e) => {
-      	document.getElementById(e.target.innerText).scrollIntoView()
-      	return false;
-    	}
-    });
-  </script>
+<%- js('/js/tocbot.min') %>
+<script>
+  // Tocbot_v4.7.0  http://tscanlin.github.io/tocbot/
+  tocbot.init({
+    tocSelector: '.tocbot',
+    contentSelector: '.article-entry',
+    headingSelector: 'h1, h2, h3, h4, h5, h6',
+    hasInnerContainers: true,
+    scrollSmooth: true,
+    positionFixedSelector: '.tocbot',
+    positionFixedClass: 'is-position-fixed',
+    fixedSidebarOffset: 'auto',
+    onClick: (e) => {
+      document.getElementById(e.target.innerText).scrollIntoView()
+      return false;
+    }
+  });
+</script>
 <% } %>
 
 <script>
@@ -38,10 +38,12 @@
 <script src="https://cdn.jsdelivr.net/npm/jquery-modal@0.9.2/jquery.modal.min.js"></script>
 <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/jquery-modal@0.9.2/jquery.modal.min.css">
 
-<% if (theme.mathjax){ %>
-  <%- partial('mathjax') %>
+<% if (theme.image_viewer){ %>
+<%- partial('viewer') %>
 <% } %>
 
-<script type="text/javascript" src="https://js.users.51.la/20544303.js"></script>
-  
-  
+<% if (theme.mathjax){ %>
+<%- partial('mathjax') %>
+<% } %>
+
+<script type="text/javascript" src="https://js.users.51.la/20544303.js"></script>
\ No newline at end of file
diff --git a/layout/_partial/viewer.ejs b/layout/_partial/viewer.ejs
new file mode 100644
index 0000000..745b61d
--- /dev/null
+++ b/layout/_partial/viewer.ejs
@@ -0,0 +1,106 @@
+<!-- Root element of PhotoSwipe. Must have class pswp. -->
+<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" style="display:none" 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>
+
+<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/photoswipe@4.1.3/dist/photoswipe.min.css">
+<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/photoswipe@4.1.3/dist/default-skin/default-skin.css">
+<script src="https://cdn.jsdelivr.net/npm/photoswipe@4.1.3/dist/photoswipe.min.js"></script>
+<script src="https://cdn.jsdelivr.net/npm/photoswipe@4.1.3/dist/photoswipe-ui-default.min.js"></script>
+
+<script>
+    function viewer_init() {
+        let pswpElement = document.querySelectorAll('.pswp')[0];
+        let $imgArr = document.querySelectorAll(('.article-entry img:not(.reward-img)'))
+
+        $imgArr.forEach(($em, i) => {
+            $em.onclick = () => {
+                // slider展开状态
+                // todo: 这样不好，后面改成状态
+                if (document.querySelector('.left-col.show')) return
+                let items = []
+                $imgArr.forEach(($em2, i2) => {
+                    let img = $em2.getAttribute('data-idx', i2)
+                    let src = $em2.getAttribute('data-target') || $em2.getAttribute('src')
+                    let title = $em2.getAttribute('alt')
+                    // 获得原图尺寸
+                    const image = new Image()
+                    image.src = src
+                    items.push({
+                        src: src,
+                        w: image.width || $em2.width,
+                        h: image.height || $em2.height,
+                        title: title
+                    })
+                })
+                var gallery = new PhotoSwipe(pswpElement, PhotoSwipeUI_Default, items, {
+                    index: parseInt(i)
+                });
+                gallery.init()
+            }
+        })
+    }
+    viewer_init()
+</script>
\ No newline at end of file