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A responsive, modern, Jekyll theme for bloggers with Bootstrap styling and KaTex support.
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 Project Readme

Cadre

Jekyll Themes Shield

Cadre is a responsive, modern, and customizable Jekyll theme for bloggers. This theme is designed to come with good defaults including an archive and categories page.

This is a fork of the excellent scaffold theme, completely redesigned with Bootstrap, and added KaTex support for improved mathematical typesetting.

Screenshots

Homepage

Homepage

Categories

Just add a ./categories.html file in the root of your directory with yml as specified below!

Categories

Post

Support for code and mathematical typesetting, table of contents with highlighted scroll, and more. Post

Features (Not a Complete List)

Table of Contents

  • Installation
  • Usage
    • Global Configuration
    • Post Configuration
    • Homepage
    • Archive
    • Categories
    • Navigation
    • Social Links
    • Archive
    • Custom Styling
    • Custom Head
  • Contributing
  • Development
  • License

Installation

Add this line to your Jekyll site's Gemfile:

# Gemfile

gem "jekyll-theme-cadre"

And add this line to your Jekyll site's _config.yml:

# _config.yml

theme: jekyll-theme-cadre

And then execute:

$ bundle

Or install it yourself as:

$ gem install jekyll-theme-cadre

Github Pages

If you want to use this theme on GitHub Pages, you can do that via jekyll-remote-theme.

  1. Import jekyll-remote-theme in your Gemfile:

    # Gemfile 
    
    gem "jekyll-remote-theme"
  2. Add these lines to your _config.yml:

    # _config.yml
    
    plugins:
      - jekyll-remote-theme
    
    remote_theme: slee981/jekyll-theme-cadre

Usage

The main usage of this theme is described in detail below. If you find the document difficult to understand or not specific enough, you can also use the gh-pages branch of this repository as an example to learn how to use this theme.

Global Configuration

Variable Type Default Specification
title String --- The title of the website
description String --- A description of you or the blog. Alias for "about"
about String --- About you or about the blog
about_img Filepath --- Image to display in the "About" section
navbar_img Filepath --- Image to display in the top navbar
favicon_img Filepath --- Image to display in browser tab
paginate Number --- How many posts to show on the home page
exclude_powered_by Boolean false Remove the "powered by..." credit in the footer
google_analytics String --- Google Analytics tracking ID
disqus String --- Disqus short name

Post Configuration

Variable Type Default Specification
description String --- A description of the current post
author String or Array --- The author name(s) of the post
mathjax Boolean false Enable MathJax on this page
katex Boolean false Enable KaTex on this page
comments Boolean true Enable the Disqus comment system
toc Boolean false Enable the TOC

Homepage

You can create a homepage for your blog by setting layout: home in your index.html. No other code is needed.

<!-- ./index.html -->
---
layout: home
---

Archive

Cadre supports built-in archive pages. If you want to archive posts by years, you can create a page named ./archive.html and put the following code in it:

---
title: Archive
layout: archive
type: years
permalink: archive.html
---

Categories

By default, Cadre supports category tracking and searching. It is highly recommended to add this page, as category tracking widgets are supported by default. To use:

  1. Create a _data/navigation.yml file with the contents shown above.
  2. Denote categories in your post with metadata in the header:
    ---
    <!-- ./_posts/2021-01-08-example-post.md -->
    
    layout: post 
    categories: [General, Tools]
    ...
    ---
  3. Create a page archive.html in the root directory. Similar to the archive setup, create the file:
    ---
    <!-- ./archive.html -->
    
    title: Categories 
    layout: archive 
    type: categories 
    permalink: categories.html
    ---

Similarly, if you want to archive posts by tags, you can set the type property as tags.

Navigation

You can configure the navigation of the website by creating a file _data/navigation.yml in your repository, and put some data such as below into it. By default, this theme comes with pages for catgories.html and archive.html.

# _data/navigation.yml
- name: Home 
  link: index.html
- name: Categories 
  link: categories.html 
- name: Archive
  link: archive.html 

Social Links

Scaffold allows you to show social links on the website, all you need to do is creating a file _data/social.yml, for example,

# _data/social.yml
- name: Email
  link: mailto:smlee.981@gmail.com
  icon: fas fa-envelope
- name: Twitter
  link: https://twitter.com/slee981
  icon: fab fa-twitter
- name: GitHub
  link: https://github.com/slee981
  icon: fab fa-github

The icon property means a Font Awesome class, and you can select any one you like.

Custom Styling

You can easily override the default settings. To override variables, create three new fies (and the corresponding folders, as needed)

$ mkdir _sass _sass/cadre assets assets/css
$
$ touch _sass/cadre/custom-variables.scss 
$ touch _sass/cadre/custom-styles.scss
$ touch assets/css/style.scss 

In your favorite text editor, you can change any of the following default values:

/* in "./_sass/cadre/custom-variables.scss" */

// base nav logo image size
$navbar-img-height: 45px; 
$navbar-img-width: 150px; 

// colors
$tan: rgb(255, 246, 231);
$beige: rgb(255, 248, 238);
$cream: rgb(248, 247, 245);

$site-primary: rgb(214, 12, 12);   // primary site color
$site-secondary: rgb(119, 0, 0);   // secondary site color
$site-tertiary: var(--oc-gray-6);  // from open-colors.scss

$body-bg: $cream;                  // main background color
$math-bg: $beige;                  // katex math background color
$nav-bg: var(--oc-white);          // navbar background color
$footer-bg: var(--oc-gray-1);      // footer background color
$card-bg: var(--oc-white);         // card background color
$code-bg: var(--oc-gray-1);        // code background color
$post-bg: var(--oc-white);         // actual post background color

...

And so on. See code for more complete options. Similarly you can override any class or id settings as follows:

/* in "./_sass/cadre/custom-styles.scss" */

.navbar {
  // your custom navbar style
  padding: 5% 15%; 
}

Finally, we reload all of the style as follows in your assets/css/style.scss file:

// in "./assets/css/style.scss"
---
---

@import "cadre/initialize";

The front matter dashes at the very beginning can remain empty. The directive to initialize will automatically load your custom overrides when available.

Your website should now reflect these changes.

Custom Head

You can insert custom code easily into the head by creating a file _includes/custom-head.html and adding your code.

<!-- ./_includes/custom-head.html -->

<script>
  console.log("This is my custom head");
</script>

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/slee981/jekyll-theme-cadre.

Development

To set up your environment to develop this theme, run bundle install.

Your theme is setup just like a normal Jekyll site! To test your theme, run bundle exec jekyll serve and open your browser at http://localhost:4000. This starts a Jekyll server using your theme. Add pages, documents, data, etc. like normal to test your theme's contents. As you make modifications to your theme and to your content, your site will regenerate and you should see the changes in the browser after a refresh, just like normal.

When your theme is released, only the files in _layouts, _includes, _sass and assets tracked with Git will be bundled. To add a custom directory to your theme-gem, please edit the regexp in jekyll-theme-cadre.gemspec accordingly.

Acknowledgment

As mentioned above, this project is a fork of https://github.com/sziv2p/jekyll-theme-scaffold. As such, credit and appreciation goes to anyone who contributed to that project. Much of the "scaffolding" of this project was left untouched.

License

The theme is available as open source under the terms of the MIT License.