Hugo Clarity

A technology-minded theme for Hugo based on VMware's open-source Clarity Design System featuring rich code support, dark/light mode, mobile support, and much more. See a live demo at neonmirrors.net.

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Preview on Mobile

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Features
Prerequisites
Getting up and running
Configuration

Features

Blog with tagging and category options
Deeplinks
Native Image Lazy Loading
Customizable (see config)
Dark Mode (with UI controls for user preference setting)
Toggleable table of contents
Flexible image configuration
Logo alignment
Mobile support with configurable menu alignment
Syntax Highlighting
Rich code block functions including:
1. Copy to clipboard
2. Toggle line wrap (dynamic)
3. Toggle line numbers
4. Language label
5. Toggle block expansion/contraction (dynamic)
To put it all in context, here is a preview showing all functionality.

Prerequisites

Firstly, ensure you have installed the extended version of Hugo. See installation steps from Hugo's official docs.

Getting up and running

Read the prerequisites above and verify you're using the extended version of Hugo. There are at least two ways of quickly getting started with Hugo and the VMware Clarity theme:

Option 1 (recommended)

Generate a new Hugo site and add this theme as a Git submodule inside your themes folder:

hugo new site yourSiteName
cd yourSiteName
git init
git submodule add https://github.com/chipzoller/hugo-clarity themes/hugo-clarity
cp -a themes/hugo-clarity/exampleSite/ .

Then run

hugo server

Hurray!

Option 2 (Great for testing quickly)

You can run your site directly from the exampleSite. To do so, use the following commands:

git clone https://github.com/chipzoller/hugo-clarity
cd hugo-clarity/exampleSite/
hugo server --themesDir ../..

Although, option 2 is great for quick testing, it is somewhat problematic when you want to update your theme. You would need to be careful not to overwrite your changes.

Once set, jump over to the config.toml file and start configuring your site.

Configuration

This section will mainly cover settings that are unique to this theme. If something is not covered here (or elsewhere in this file), there's a good chance it is covered in this Hugo docs page.

Global Parameters

These options set global values that some pages or all pages in the site use by default.

Parameter	Value Type	Overidable on Page
author	string	no
twitter	string	no
largeTwitterCard	boolean	no
ga_analytics	string	no
introDescription	string	no
numberOfTagsShown	integer	no
fallBackOgImage	file path (string)	no
codeMaxLines	integer	yes
codeLineNumbers	boolean	yes
mainSections	array/string	no
centerLogo	boolean	no
logo	file path (string)	no
mobileNavigation	string	no
figurePositionShow	boolean	yes
figurePositionLabel	string	no
customCSS	array of file path (string)	no
customJS	array of file path (string)	no

Page Parameters

These options can be set from a page frontmatter or via archetypes.

Parameter	Value Type	Overrides Global
title	string	N/A
date	date	N/A
description	string	N/A
draft	boolean	N/A
featured	boolean	N/A
tags	array/string	N/A
categories	array/string	N/A
toc	boolean	N/A
thumbnail	file path (string)	N/A
featureImage	file path (string)	N/A
shareImage	file path (string)	N/A
codeMaxLines	integer	yes
codeLineNumbers	boolean	yes
figurePositionShow	boolean	yes
figurePositionLabel	string	no

Modify links menu

To add, remove, or reorganize top menu items, edit this YAML file. These menu items also display any categories (taxonomies) that might be configured for articles.

Social media

To edit your social media profile links, edit this YAML file.

If you wish to globally use a large Twitter summary card when sharing posts, set the global parameter largeTwitterCard to true.

Search engine

If using Google Analytics, configure the ga_analytics global parameter in your site with your ID.

Blog directory

Edit the config.toml file and change the mainSections key. Values will be directories where the blogs reside.

[params]
...
mainSections = ["posts", "docs", "blogs"]
...

For more info, see the Hugo docs.

Mobile menu positioning

The navigation menu when mobile browsing can be configured in config.toml to open right or left depending on preference. The "hamburger" menu icon will always display in the upper right hand corner regardless.

[params]
...
mobileNavigation = "left" # Mobile nav menu will open to the left of the screen.
...

Tags and Taxonomies

Show number of tags

The number of tags and taxonomies (including categories) that should be shown can be configured so that any more than this value will only be accessible when clicking the All Tags button. This is to ensure a large number of tags or categories can be easily managed without consuming excess screen real estate. Edit the numberOfTagsShown parameter and set accordingly.

[params]
...
numberOfTagsShownPerArticle = 4 # Applies for categories & custom taxonomies. e.g brands
...

Number of tags example

Images

Image figure captions

You have the option of adding captions to images in blog posts and automatically prepending a desired string such as "Figure N" to the alt text. This is controlled via two global settings.

figurePositionLabel is a string which will be prepended to any alt text of an article image. By default, this is set to "Figure." And figurePositionShow controls, globally, whether to show this label. It does not affect whether to show the image alt text, only the prefix figure caption. For more granular control, figurePositionShow can be overridden at the article level if desired.

The number will be automatically calculated and assigned after the figurePositionLabel text starting from the top of the article and counting down. Featured images will be excluded from this figuration.

Image figure captions example

In this example, figurePositionLabel is set to "Figure" in config.toml and this is the first image in a given article.

![Antrea Kubernetes nodes prepared](./images/image-figure.png)

Inline images

To make a blog image inline, append :inline to its alt text. Typically, inline images will have no alt text associated with them.

Inline images example

<!-- some image without alt text -->
![:inline](someImageUrl)

<!-- some image with alt text -->

![some alt text:inline](someOtherImageUrl)

Float images to the left

To align a blog image to the left, append :left to its alt text. Article text will then flow to the right of the image.

Float images left example

<!-- some image without alt text -->
![:left](someImageUrl)

<!-- some image with alt text -->

![some alt text:left](someOtherImageUrl)

Add classes to images

To add a class image to the left, append ::<classname> to its alt text. You can also add multiple classes to an image separated by space. ::<classname1> <classname2>.

Image class example

<!-- some image without alt text -->
![::img-medium](someImageUrl)

<!-- some image with alt text -->

![some alt text::img-large img-shadow](someOtherImageUrl)

Article thumbnail image

Blog articles can specify a thumbnail image which will be displayed to the left of the card on the home page. Thumbnails should be square (height:width ratio of 1:1) and a suggested dimension of 150 x 150 pixels. They will be specified using a frontmatter variable as follows:

...
thumbnail: "images/2020-04/capv-overview/thumbnail.jpg"
...

The thumbnail image will take precedence on opengraph share tags if the shareImage parameter is not specified.

Article featured image

Each article can specify an image that appears at the top of the content. When sharing the blog article on social media, if a thumnail is not specified, the featured image will be used as a fallback on opengraph share tags.

...
featureImage: "images/2020-04/capv-overview/featured.jpg"
...

Share Image

Sometimes, you want to explicitly set the image that will be used in the preview when you share an article on social media. You can do so in the front matter.

...
shareImage = "images/theImageToBeUsedOnShare.png"
...

Note that if a share image is not specified, the order of precedence that will be used to determine which image applies is thumbnail => featureImage => fallbackOgImage. When sharing a link to the home page address of the site (as opposed to a specific article), the fallbackOgImage will be used.

Align logo

You can left align or center your site's logo.

...
centerLogo = true # Change to false to align left
...

If no logo is specified, the title of the site will appear in its place.

Code

Display line numbers

Choose whether to display line numbers within a code block globally with the parameter codeLineNumbers setting to true or false.

[params]
...
codeLineNumbers = true # Shows line numbers for all code blocks globally.
...

Limit code block height

You can globally control the number of lines which are displayed by default for your code blocks. Code which has the number of lines exceed this value will dynamically cause two code block expansion buttons to appear, allowing the user to expand to full length and contract. This is useful when sharing code or scripts with tens or hundreds of lines where you wish to control how many are displayed. Under params in config.toml file, add a value as follows:

[params]
...
codeMaxLines = 10 # Maximum number of lines to be shown by default across all articles.
...

If the value already exists, change it to the desired number. This will apply globally.

If you need more granular control, this parameter can be overridden at the blog article level. Add the same value to your article frontmatter as follows:

...
codeMaxLines = 15 # Maximum number of lines to be shown in code blocks in this blog post.
...

If codeMaxLines is specified both in config.toml and in the article frontmatter, the value specified in the article frontmatter will apply to the given article. In the above example, the global default is 10 and yet the article value is 15 so code blocks in this article will auto-collapse after 15 lines.

If codeMaxLines is not specified anywhere, an internal default value of 100 will be assumed.

Each article can optionally have a table of contents (TOC) generated for it based on top-level links. By configuring the toc parameter in the article frontmatter and setting it to true, a TOC will be generated only for that article. The TOC will then render under the featured image.

Table of contents (TOC) example

Custom CSS and JS

To minimize HTTP requests per page, we would recommend loading CSS styles and JavaScript helpers in single bundles. That is to say, one CSS file and one JavaScript file. Using Hugo minify functions, these files will be minified to optimize the size.

Going by the above 👆🏻 reason, we recommend adding custom CSS and JS via this custom SASS file and custom JavaScript file.

However, sometimes you may need to load additional style or script files. In such cases, you can add custom .css and .js files by listing them in the config.toml file (see the snippet below). Similar to images, these paths should be relative to the static directory.

[params]
...
customCSS = ["css/custom.css"] # Include custom CSS files
customJS = ["js/custom.js"] # Include custom JS files
...

Pro Tip: You can change the theme colors via the this variable's SASS file