Merge pull request #2394 from daiyam/fence-attrs

add attributes to fence blocks

browser/components/MarkdownPreview.js

@@ -737,7 +737,6 @@ export default class MarkdownPreview extends React.Component {
             el.addEventListener('click', this.linkClickHandler)
           })
         } catch (e) {
-          console.error(e)
           el.className = 'flowchart-error'
           el.innerHTML = 'Flowchart parse error: ' + e.message
         }
@@ -758,7 +757,6 @@ export default class MarkdownPreview extends React.Component {
             el.addEventListener('click', this.linkClickHandler)
           })
         } catch (e) {
-          console.error(e)
           el.className = 'sequence-error'
           el.innerHTML = 'Sequence diagram parse error: ' + e.message
         }
@@ -771,12 +769,18 @@ export default class MarkdownPreview extends React.Component {
         try {
           const chartConfig = JSON.parse(el.innerHTML)
           el.innerHTML = ''
-          var canvas = document.createElement('canvas')
+
+          const canvas = document.createElement('canvas')
           el.appendChild(canvas)
-          /* eslint-disable no-new */
-          new Chart(canvas, chartConfig)
+
+          const height = el.attributes.getNamedItem('data-height')
+          if (height && height.value !== 'undefined') {
+            el.style.height = height.value + 'vh'
+            canvas.height = height.value + 'vh'
+          }
+
+          const chart = new Chart(canvas, chartConfig)
         } catch (e) {
-          console.error(e)
           el.className = 'chart-error'
           el.innerHTML = 'chartjs diagram parse error: ' + e.message
         }

browser/components/markdown.styl

@@ -209,41 +209,39 @@ code
   text-decoration none
   margin-right 2px
 pre
-  padding 0.5em !important
+  padding 0.5rem !important
   border solid 1px #D1D1D1
   border-radius 5px
   overflow-x auto
-  margin 0 0 1em
+  margin 0 0 1rem
   display flex
   line-height 1.4em
-  &.flowchart, &.sequence, &.chart
-    display flex
-    justify-content center
-    background-color white
-  &.CodeMirror
-    height initial
-    flex-wrap wrap
-    &>code
-      flex 1
-      overflow-x auto
   code
     background-color inherit
     margin 0
     padding 0
     border none
     border-radius 0
+  &.CodeMirror
+    height initial
+    flex-wrap wrap
+    &>code
+      flex 1
+      overflow-x auto
+  &.mermaid svg
+    max-width 100% !important
   &>span.filename
-    width 100%
-    border-radius: 5px 0px 0px 0px
-    margin -8px 100% 8px -8px
-    padding 0px 6px
+    margin -0.5rem 100% 0.5rem -0.5rem
+    padding 0.125rem 0.375rem
     background-color #777;
     color white
+    &:empty
+      display none
   &>span.lineNumber
     display none
     font-size 1em
-    padding 0.5em 0
-    margin -0.5em 0.5em -0.5em -0.5em
+    padding 0.5rem 0
+    margin -0.5rem 0.5rem -0.5rem -0.5rem
     border-right 1px solid
     text-align right
     border-top-left-radius 4px
@@ -375,6 +373,19 @@ for name, val in admonition_types
         color: val[color]
         content: val[icon]
 
+pre.fence
+  flex-wrap wrap
+
+  .chart, .flowchart, .mermaid, .sequence
+    display flex
+    justify-content center
+    background-color white
+    max-width 100%
+    flex-grow 1
+
+    canvas, svg
+      max-width 100% !important
+
 themeDarkBackground = darken(#21252B, 10%)
 themeDarkText = #f9f9f9
 themeDarkBorder = lighten(themeDarkBackground, 20%)

browser/components/render/MermaidRender.js

@@ -11,9 +11,9 @@ function getRandomInt (min, max) {
 }
 
 function getId () {
-  var pool = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'
-  var id = 'm-'
-  for (var i = 0; i < 7; i++) {
+  const pool = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'
+  let id = 'm-'
+  for (let i = 0; i < 7; i++) {
     id += pool[getRandomInt(0, 16)]
   }
   return id
@@ -21,16 +21,20 @@ function getId () {
 
 function render (element, content, theme) {
   try {
+    const height = element.attributes.getNamedItem('data-height')
+    if (height && height.value !== 'undefined') {
+      element.style.height = height.value + 'vh'
+    }
     let isDarkTheme = theme === 'dark' || theme === 'solarized-dark' || theme === 'monokai' || theme === 'dracula'
     mermaidAPI.initialize({
       theme: isDarkTheme ? 'dark' : 'default',
-      themeCSS: isDarkTheme ? darkThemeStyling : ''
+      themeCSS: isDarkTheme ? darkThemeStyling : '',
+      useMaxWidth: false
     })
     mermaidAPI.render(getId(), content, (svgGraph) => {
       element.innerHTML = svgGraph
     })
   } catch (e) {
-    console.error(e)
     element.className = 'mermaid-error'
     element.innerHTML = 'mermaid diagram parse error: ' + e.message
   }