add new fenced block language: gallery

browser/components/MarkdownPreview.js

@@ -21,6 +21,8 @@ import yaml from 'js-yaml'
 import context from 'browser/lib/context'
 import i18n from 'browser/lib/i18n'
 import fs from 'fs'
+import { render } from 'react-dom'
+import Carousel from 'react-image-carousel'
 
 const { remote, shell } = require('electron')
 const attachmentManagement = require('../main/lib/dataApi/attachmentManagement')
@@ -39,7 +41,8 @@ const appPath = fileUrl(
 )
 const CSS_FILES = [
   `${appPath}/node_modules/katex/dist/katex.min.css`,
-  `${appPath}/node_modules/codemirror/lib/codemirror.css`
+  `${appPath}/node_modules/codemirror/lib/codemirror.css`,
+  `${appPath}/node_modules/react-image-carousel/lib/css/main.min.css`
 ]
 
 function buildStyle (
@@ -789,6 +792,34 @@ export default class MarkdownPreview extends React.Component {
         mermaidRender(el, htmlTextHelper.decodeEntities(el.innerHTML), theme)
       }
     )
+
+    _.forEach(
+      this.refs.root.contentWindow.document.querySelectorAll('.gallery'),
+      el => {
+        const images = el.innerHTML.split(/\n/g).filter(i => i.length > 0)
+        el.innerHTML = ''
+
+        const height = el.attributes.getNamedItem('data-height')
+        if (height && height.value !== 'undefined') {
+          el.style.height = height.value + 'vh'
+        }
+
+        let autoplay = el.attributes.getNamedItem('data-autoplay')
+        if (autoplay && autoplay.value !== 'undefined') {
+          autoplay = parseInt(autoplay.value, 10) || 0
+        } else {
+          autoplay = 0
+        }
+
+        render(
+          <Carousel
+            images={images}
+            autoplay={autoplay}
+          />,
+          el
+        )
+      }
+    )
   }
 
   focus () {

browser/components/markdown.styl

@@ -381,6 +381,26 @@ pre.fence
     canvas, svg
       max-width 100% !important
 
+  .gallery
+    width 100%
+    height 50vh
+
+    .carousel
+      .carousel-main img
+        min-width auto
+        max-width 100%
+        min-height auto
+        max-height 100%
+
+      .carousel-footer::-webkit-scrollbar-corner
+        background-color transparent
+
+      .carousel-main, .carousel-footer
+        background-color $ui-noteDetail-backgroundColor
+      .prev, .next
+        color $ui-text-color
+        background-color $ui-tag-backgroundColor
+
 themeDarkBackground = darken(#21252B, 10%)
 themeDarkText = #f9f9f9
 themeDarkBorder = lighten(themeDarkBackground, 20%)
@@ -432,6 +452,14 @@ body[data-theme="dark"]
     background-color themeDarkBorder
     color themeDarkText
 
+  pre.fence
+    .gallery
+      .carousel-main, .carousel-footer
+        background-color $ui-dark-noteDetail-backgroundColor
+      .prev, .next
+        color $ui-dark-text-color
+        background-color $ui-dark-tag-backgroundColor
+
 themeSolarizedDarkTableOdd = $ui-solarized-dark-noteDetail-backgroundColor
 themeSolarizedDarkTableEven = darken($ui-solarized-dark-noteDetail-backgroundColor, 10%)
 themeSolarizedDarkTableHead = themeSolarizedDarkTableEven
@@ -459,6 +487,14 @@ body[data-theme="solarized-dark"]
         &:last-child
           border-right solid 1px themeSolarizedDarkTableBorder
 
+  pre.fence
+    .gallery
+      .carousel-main, .carousel-footer
+        background-color $ui-solarized-dark-noteDetail-backgroundColor
+      .prev, .next
+        color $ui-solarized-dark-text-color
+        background-color $ui-solarized-dark-tag-backgroundColor
+
 themeMonokaiTableOdd = $ui-monokai-noteDetail-backgroundColor
 themeMonokaiTableEven = darken($ui-monokai-noteDetail-backgroundColor, 10%)
 themeMonokaiTableHead = themeMonokaiTableEven
@@ -486,4 +522,12 @@ body[data-theme="monokai"]
         &:last-child
           border-right solid 1px themeMonokaiTableBorder
   kbd
-    background-color themeDarkBackground
+    background-color themeDarkBackground
+
+  pre.fence
+    .gallery
+      .carousel-main, .carousel-footer
+        background-color $ui-monokai-noteDetail-backgroundColor
+      .prev, .next
+        color $ui-monokai-text-color
+        background-color $ui-monokai-tag-backgroundColor

browser/lib/markdown.js

@@ -143,6 +143,12 @@ class Markdown {
           <div class="flowchart" data-height="${token.parameters.height}">${token.content}</div>
         </pre>`
       },
+      gallery: token => {
+        return `<pre class="fence" data-line="${token.map[0]}">
+          <span class="filename">${token.fileName}</span>
+          <div class="gallery" data-autoplay="${token.parameters.autoplay}" data-height="${token.parameters.height}">${token.content}</div>
+        </pre>`
+      },
       mermaid: token => {
         return `<pre class="fence" data-line="${token.map[0]}">
           <span class="filename">${token.fileName}</span>