kc-cli

The one-stop-shop for @infosupport employees to create and serve slick Reveal.js presentations.

Install

Both local and global installations are possible. Global is easiest and therefore the recommended approach.

Global

This has the advantage that you only have to install it and you're ready to go.

npm install --global @infosupport/kc-cli # Windows
npm install --global @infosupport/kc-cli --unsafe-perm=true # Linux

Local

With this, you are free to choose when you want to upgrade to newer versions of the CLI with, for example, a new corporate design.

You will have to make it an npm project.

npm init --yes
npm install @infosupport/kc-cli # Windows
npm install @infosupport/kc-cli --unsafe-perm=true # Linux

Then, in the package.json, add a start script:

{
	"scripts": {
		"start": "kc serve"
	}
}

Usage

To get a setup quick and easy, run kc init. After choosing the "demo" example, it generates a folder structure similar to this:

├── css
│   └── custom.css
├── description.md
├── description.nl.md
├── kc.json
├── labSolutions
├── labs
│   ├── lab01.md
│   ├── lab02.md
│   └── starter
│       └── readme.md
├── learning-goals.md
├── slides
│   ├── 00-intro
│   │   ├── 01-title.md
│   │   ├── 02-agenda.md
│   │   └── 03-about.md
│   ├── 01-markdown-basics
│   │   ├── 01-title.md
│   │   ├── 02-text.md
│   └── 99-wrap-up
│       ├── 01-title.md
│       ├── 02-best-practices.md
│       ├── 97-questions.md
│       ├── 98-end.md
│       └── 99-logo.md
└── web-components
    └── my-component
        ├── my-component.js
        ├── my-component.styles.js
        └── my-component.template.js

From there, use your favorite text editor (e.g., Visual Studio Code) to change the content of the slides, modify the custom CSS, etc.

A couple of notes on the project folders:

• /slides contains subdirectories for each chapter/module and holds markdown files (the slides) inside those subfolders. /slides is the only required folder for a minimal setup
• /css is for customizing the style of your presentation using CSS
• /assets is for holding assets like images and videos. You can also name this folder something else like /img
• /web-components is for your own custom, interactive presentation widgets. It's advanced stuff. Scroll down for more information.
• /labs is where you put the labs.

To view your presentation:

kc serve     # for global installations

npm start    # for local installations

Serve

| option | description | | --------------------- | -------------------------------------------------------------------------------- | | kc serve | serve presentation from current directory on default port | | kc serve -o | open presentation in default browser | | kc serve -o -f java | open presentation in default browser for flavor 'java' (see flavors) | | kc serve -p | use random port | | kc serve -p <port> | use specified <port> | | kc serve --nolive | disable live reload |

Both the presentation as the labs are served. When you run kc serve you will see message like this:

Presentation url: http://localhost:15000, labs url: http://localhost:15000/labs, learning goals url: http://localhost:15000/learning-goals

You can open one of these URLs in chrome.

Note: Firefox is supported, but Chrome presentations look crispier because revealjs uses proprietary chrome features.

Print

This will export your slides to PDF using Decktape and pdf-lib. First, Decktape reads all the presentation slides and uses pdf-lib to generate a PDF where every page is a slide. With a bit of custom code, this PDF is transformed into a PDF that fits our corporate design.

kc print will serve the presentation itself.

| option | description | | ----------------------------------- | ---------------------------------------------------------------------------- | | kc print | print presentation to PDF | | kc print --output [filename] | use specified filename | | kc print --module [module number] | generate a PDF for a specific module | | kc print --per-module | generate a PDF for each module. The module titles will be used for filenames | | kc print --flavor java | generate a PDF for a specific flavor (see flavors) | | kc print --no-labs | skip generating a PDF for the labs. |

Linting

| option | description | | --------- | -------------------------------------------------------------------- | | kc lint | diagnose issues for when the presentation isn't running as it should |

Other commands

This is a list of other commands that are available:

| command | description | | ------------ | ----------------------------------------------------------------------------- | | kc build | Build standalone applications. Currently, only learning goals are supported. | | kc extract | Extract content for the course description on the website. | | kc pack | Print, build, extract and package a presentation with labs and lab solutions. |

Corporate identity

By default, the corporate identity is applied to every slide. Certain slides can receive specific theming.

• For the welcoming slide, often the very first slide, add <!-- .slide: class="is-welcome" -->.
• For a new chapter, add <!-- .slide: class="is-module" -->.
• For the closing slide, the very last slide, add <!-- .slide: class="is-closing" -->.
• For additional emphasis, for example a new topic inside a chapter, add <!-- .slide: class="is-fancy1" --> through <!-- .slide: class="is-fancy3" -->.
• To add a lab slide, add <!-- .slide: class="is-lab" -->.
• To disable theming, add <!-- .slide: class="is-empty" -->.

Layout and styling

The CLI offers a few options out of the box:

• kc-flex to turn an element into a flex container
• kc-columns to turn an element into a flex container where all its children have an equal width
• kc-grid to apply a grid to an element
• kc-gap1 through kc-gap5 to create a gap between flex/grid items
• kc-table to apply alternating row colors to a table
• kc-smaller to decrease font size
• kc-smallest to decrease font size further
• kc-left and kc-right for floating left/right
  • or alignment with margin for tables

Apply these classes with a bit of HTML

<div class="kc-flex">

-   item 1
-   item 2
-   item 3

</div>

or with special comments

![Example image](img/example.png)

<!-- .element: class="kc-right" -->

See the example/ folder for exact implementations.

Web Components

With Reveal.js, we can leverage Web Components to make slides more awesome. Right now, you can use these components out-of-the-box.

Note that web components are not natively supported in IE and this CLI is quite comfortable with not making any effort whatsoever to make it work in those browsers.

| web component | description | | ------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------- | | <kc-timeline events='[{ "year": 2019, "caption": "cool stuff", "description": "detailed explanation of cool stuff" }]'> | A graphical visualization of a timeline. | | <npm-weekly-downloads package="@stryker-mutator/core"></npm-weekly-downloads> | Retrieves the number of weekly downloads for an npm package. Also caches the number in the session storage as to unburden npm's servers |

If you have (created or not) a web component that should be in this list, please let us know.

Customization and fun stuff

• The free version of font awesome v5 is included by default.
• Add your own custom CSS by creating a folder css and placing .css files in there.
• Add your own web components by creating a folder web-components with subfolders for every components. The main .js file should be the same name as the folder it's in.

Example folder structure:

|-- css
    |-- ...
|-- slides
    |-- ...
|-- web-components
    |-- cool-graph
        |-- cool-graph.js
        |-- cool-graph.html.js
        |-- cool-graph.css.js

Flavors

It is possible to host multiple presentations from one master presentation. This is also called a 'monorepo' or 'polyglot' repository.

To get a setup quick and easy, run kc init and choose the flavors example.

It will generate the following structure:

├── kc.json
├── lab-solutions
│   ├── lab01-csharp
│   │   └── readme.md
│   └── lab01-java
│       └── readme.md
├── labs
│   ├── lab01-csharp.md
│   ├── lab01-java.md
│   ├── lab01-python.md
│   └── lab02-shared.md
└── slides
    ├── 00-intro
    │   └── 01-title.md
    ├── 01-chapter-csharp
    │   └── 01-title.md
    ├── 01-chapter-java
    │   └── 01-title.md
    ├── 01-chapter-python
    │   └── 01-title.md
    ├── 02-shared-chapter
    │   ├── 01-title.md
    │   ├── 02-specific-slide-csharp.md
    │   ├── 02-specific-slide-java.md
    │   ├── 02-specific-slide-python.md
    │   ├── 03-shared-slide.md
    │   ├── 04-only-python.md
    │   ├── 04-shared-!python.md
    │   └── 05-lab.md
    └── 03-outro
        └── 99-recap.md

This is an example of using 3 flavors: csharp, java and python. Flavors names can be anything, they don't have to be programming languages.

Configuring flavors inside kc.json

The kc.json file is where you configure the flavors. The example looks like this:

{
	"$schema": "https://unpkg.com/@infosupport/kc-cli/kc-schema.json",
	"flavors": {
		"csharp": { "trainingCode": "FLCS" },
		"java": { "trainingCode": "FLJV" },
		"python": { "trainingCode": "FLPY" }
	}
}

Here, each flavor has a name ("csharp", "java" and "python" in this example) and a trainingCode. The training code is used to base the pdf name on when using kc print or kc pack and they should reflect the KC training code for the training.

Activating a flavor

When you run kc serve with multiple flavors defined in the kc.json file, you can choose which flavor to active using the ?flavor=flavorName on the query string. It is also printed to the console:

Presentation has 3 flavor(s):
        csharp: http://localhost:35943?flavor=csharp
        java: http://localhost:35943?flavor=java
        python: http://localhost:35943?flavor=python

Using serve with --open (or -o) will open all the flavors in your default browser, or it will open a specific flavor of your choosing with --flavor java (or -f java).

Switch flavors

You can switch flavors mid-presentation using the c button. This can be especially helpful when you're creating for multiple flavors at once.

Display / hide specifics

When using multiple flavors, slides are shown as usual, but there are ways to choose what to display on specific flavors:

• You can use flavored file names and directory names.
  • Use a 01-chapter-flavorName directory to create a chapter specific to a flavor.
  • Use a 01-chapter/01-slide-flavorName.md markdown file for a specific flavor.
  • You can use multiple flavors: 01-chapter-flavor1-flavor2.
  • Instead of -flavorName you can use -!flavorName to exclude 1 flavor
• Inside a shared markdown file:
  • Code examples are automatically specific to the current flavor
  • Use the flavor-flavorName and flavor-!flavorName css classes to deviate inside text.

Examples:

Here are some useful examples:

The mocking framework we're going to use is <span class="flavor-java">mockito</span><span class="flavor-csharp">moq</span>

Installing this with:

```sh
dotnet add package moq
```

<!-- .element class="flavor-csharp" -->

```xml
<!-- <project><dependencies> -->
  <dependency>
    <groupId>org.mockito</groupId>
    <artifactId>mockito-core</artifactId>
    <version>4.11.0</version>
    <scope>test</scope>
  </dependency>
<!-- </dependencies></project> -->
```

<!-- .element class="flavor-java" -->

Printing multiple flavors

When printing a presentation with multiple flavors, they are all printed by default. You can choose a specific flavor to print using --flavor flavorName.

The kc-cli uses this naming scheme for pdfs:

[output]-<trainingCode>-[nr-chapterTitle].pdf

Where:

• output is the optional --output parameter value.
• trainingCode is the required training code associated with the flavor.
• nr-chapterTitle nr and chapter title are the nr and name of the chapter when using --per-module.

Logitech Spotlight

When you want to use your 'Logitech spotlight wireless presenter':

• press > or < to browse between slides
• remap "press and hold > or <" with the Logitech Software to the ➡ and ⬅ keys.
• press and hold > or < to browse between chapters

The spotlight mode is meant to support the browse buttons for the 'Logitech spotlight wireless presenter'.\ The spotlight > and < buttons are hard-wired to the ➡ and ⬅ keys. By default, in reveal.js, these keys are mapped to 'next chapter' and 'previous chapter'.
In spotlight mode, the ➡ and ⬅ keys will get mapped to 'next slide' and 'previous slide'.
Pressing and holding the > and < keys are not hard-wired and can be remapped with the Logitech Software.\

Known issues

None at the moment.