hugo-theme-relearn/exampleSite/content/shortcodes/mermaid.en.md

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---
title : "Mermaid"
description : "Generation of diagram and flowchart from text in a similar manner as markdown"
---
[Mermaid](https://mermaidjs.github.io/) is a library helping you to generate diagram and flowcharts from text, in a similar manner as Markdown.
## Usage
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Just insert your mermaid code in the `mermaid` shortcode like this:
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````go
{{</* mermaid [ align=(left|right|center|justify) ] */>}}
classDiagram
Person *-- Dog
{{</* /mermaid */>}}
````
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You can set an optional `align` attribute which defaults to `center`.
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If you don't need alignment you can use the alternative syntax using code fences:
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````plaintext
```mermaid
classDiagram
Person *-- Dog
```
````
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The generated graphs can be be panned by dragging them and zoomed by using the mousewheel. On mobile devices you can use finger gestures.
## Examples
### Flowchart
{{< mermaid align="left" >}}
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graph LR;
A[Hard edge] -->|Link text| B(Round edge)
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B --> C{<strong>Decision</strong>}
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C -->|One| D[Result one]
C -->|Two| E[Result two]
{{< /mermaid >}}
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{{% expand "Show markup" "true" %}}
````go
{{</* mermaid align="left" */>}}
graph LR;
A[Hard edge] -->|Link text| B(Round edge)
B --> C{<strong>Decision</strong>}
C -->|One| D[Result one]
C -->|Two| E[Result two]
{{</* /mermaid */>}}
````
{{% /expand %}}
### Sequence
{{< mermaid >}}
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sequenceDiagram
participant Alice
participant Bob
Alice->>John: Hello John, how are you?
loop Healthcheck
John->John: Fight against hypochondria
end
Note right of John: Rational thoughts <br/>prevail...
John-->Alice: Great!
John->Bob: How about you?
Bob-->John: Jolly good!
{{< /mermaid >}}
{{% expand "Show markup" "true" %}}
````go
{{</* mermaid */>}}
sequenceDiagram
participant Alice
participant Bob
Alice->>John: Hello John, how are you?
loop Healthcheck
John->John: Fight against hypochondria
end
Note right of John: Rational thoughts <br/>prevail...
John-->Alice: Great!
John->Bob: How about you?
Bob-->John: Jolly good!
{{</* /mermaid */>}}
````
{{% /expand %}}
### GANTT
{{< mermaid >}}
gantt
dateFormat YYYY-MM-DD
title Adding GANTT diagram functionality to mermaid
section A section
Completed task :done, des1, 2014-01-06,2014-01-08
Active task :active, des2, 2014-01-09, 3d
Future task : des3, after des2, 5d
Future task2 : des4, after des3, 5d
section Critical tasks
Completed task in the critical line :crit, done, 2014-01-06,24h
Implement parser and jison :crit, done, after des1, 2d
Create tests for parser :crit, active, 3d
Future task in critical line :crit, 5d
Create tests for renderer :2d
Add to mermaid :1d
{{< /mermaid >}}
{{% expand "Show markup" "true" %}}
````go
{{</* mermaid */>}}
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gantt
dateFormat YYYY-MM-DD
title Adding GANTT diagram functionality to mermaid
section A section
Completed task :done, des1, 2014-01-06,2014-01-08
Active task :active, des2, 2014-01-09, 3d
Future task : des3, after des2, 5d
Future task2 : des4, after des3, 5d
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section Critical tasks
Completed task in the critical line :crit, done, 2014-01-06,24h
Implement parser and jison :crit, done, after des1, 2d
Create tests for parser :crit, active, 3d
Future task in critical line :crit, 5d
Create tests for renderer :2d
Add to mermaid :1d
{{</* /mermaid */>}}
````
{{% /expand %}}
### Class
{{< mermaid >}}
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classDiagram
Class01 <|-- AveryLongClass : Cool
Class03 *-- Class04
Class05 o-- Class06
Class07 .. Class08
Class09 --> C2 : Where am i?
Class09 --* C3
Class09 --|> Class07
Class07 : equals()
Class07 : Object[] elementData
Class01 : size()
Class01 : int chimp
Class01 : int gorilla
Class08 <--> C2: Cool label
{{< /mermaid >}}
{{% expand "Show markup" "true" %}}
````go
{{</* mermaid */>}}
classDiagram
Class01 <|-- AveryLongClass : Cool
Class03 *-- Class04
Class05 o-- Class06
Class07 .. Class08
Class09 --> C2 : Where am i?
Class09 --* C3
Class09 --|> Class07
Class07 : equals()
Class07 : Object[] elementData
Class01 : size()
Class01 : int chimp
Class01 : int gorilla
Class08 <--> C2: Cool label
{{</* /mermaid */>}}
````
{{% /expand %}}
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### State
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{{< mermaid >}}
stateDiagram-v2
open: Open Door
closed: Closed Door
locked: Locked Door
open --> closed: Close
closed --> locked: Lock
locked --> closed: Unlock
closed --> open: Open
{{< /mermaid >}}
{{% expand "Show markup" "true" %}}
````go
{{</* mermaid */>}}
stateDiagram-v2
open: Open Door
closed: Closed Door
locked: Locked Door
open --> closed: Close
closed --> locked: Lock
locked --> closed: Unlock
closed --> open: Open
{{</* /mermaid */>}}
````
{{% /expand %}}
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## Configuration
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Mermaid is configured with default settings. You can customize mermaids default settings for all of your files thru a JSON object in your `config.toml` or override these settings sidewise thru your pages frontmatter.
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This JSON object is forwarded into mermaids `mermaid.initialize()` function.
See [mermaid documentation](http://mermaid-js.github.io/mermaid/getting-started/Setup.html#mermaidapi-configuration-defaults) for all allowed settings.
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### Example
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````toml
[params]
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mermaidInitialize = "{ \"theme\": \"dark\" }"
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````
or pages frontmatter
````toml
+++
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mermaidInitialize = "{ \"theme\": \"dark\" }"
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+++
````