Leptons

Unopinionated and Pragmatic Atomic CSS Generator.

WARNING: This package is in an early alpha phase. Don't use it yet!

Roadmap

Current version is 0.1.0-beta.1. The first goal is to release version 0.1.0 in order to make this tool public. However, new versions could break compatibility with old versions until version 1.0 is reached.

Version 0.1.0

• Basic CSS generator
• Basic modules
• !important
• Pseudo classes
• Pseudo elements
• Command line interface
• Watcher
• Add the type of value keyword, supporting initial, revert, inherit and unset
• Add missing modules
• Classes web search portal
• Improve values (length, number, etc)
• Leptons Collections like shadows
• Support standard HTML colors
• Collections
• Classes
• Components
• Negative lengths
• Display errors
• Documentation
• Website

Version 0.1.1

• Support for array params like {length...}
• grid-template-rows and grid-template-columns with {length...}

Version 0.1.2

• Display missing classes and duplicated classes

Version 0.2.0

• Add support to themes, such as Dark theme

Version 1.0

• Deprecation and backward compatibility plan

Version 2.0

• Classes and components with functions
• Custom types
• External module system

Default configuration

source:
  html:
    - '*.htm'
    - '*.html'
output: ./leptons.css
lengthType: rem
medias:
  M: 'screen and (min-width: 48rem)'
  L: 'screen and (min-width: 64rem)'

Configuration file parts

source: ...
output: ...
lengthType: ...
medias: ...
colors: ...
fonts: ...
shadows: ...
include: ...
aliases: ...
components: ...
classes: ...
collections: ...
css_before: ...
css_after: ...

Class name syntax

The folowing code shows the specification for the syntax of the class names in Leptons.

[!]module[-attribute]-value[:pseudoClass][::pseudoElement][-media]

• [] brackets means optional. So, any class requires as minimun the module name and the value. Example: In p-1px, the character p represents the Padding module and 1px is the value. So this is builded as .p-1px { padding: 1px; }
• module the module name. Example: In f-s-9px, the character f represents the Font module, so this is builded as .f-s-12px { font-size: 9px; }
• attribute the attribute of the module to set. Example: in m-t-8px, s is the Top attribute of the Margin module, so this is builded as .m-t-8px { margin-top: 8px; }
• value the value assigned to the attribute. Example: in t-a-c, c is the value assigned to the Align attribute of the Text module, so this is builded as .t-a-c { text-align: center; }
• pseudoClass one or multiple CSS pseudo classes assigned to the class. Example: in t-dl-u:h, :h represents the :hover css pseudo class, so this is builded as .t-dl-u\:h:hover { text-decoration-line: underline; }
• ! the symbol to represent the !important modifier in CSS. Example: !p-1px is builded as .\!p-1px { padding: 1px !important; }

Type of values

• Character(s): a lowercase letter or combination of them.

  Examples:

  • c in t-a-c is the center value for the align attribute of the Text module
  • lt in t-dl-u is the underline value for the decoration-line attribute of the Text module

  Characters, generally, have an equivalent long version name. Example:

  • t-a-c can be written as t-a-center
  • t-dl-lt can be written as t-dl-lineThrough

  As you see in the example above, camelCase convention is used when the long name is composed for two or more words.

• Length: a number followed by the type of length. Examples:

  • 12px in p-l-12px is the 12 value expressed in pixels for the Left attribute of the Padding module.
  • 1p in m-t-1p is the value 1 expressed in Percentage for the Top attribute of the Margin module.

• Color: some attributes of some modules uses a color name as values. The name of the color must be defined in the leptons.yaml configuration file. Examples:

  • black in t-c-black is the value for the black entry defined in the colors collection of the config file leptons.yaml

• Font: some attributes of some modules uses a color name as values. The name of the color must be defined in the leptons.yaml configuration file. Examples:

  • black in t-c-black is the value for the black entry defined in the colors collection of the config file leptons.yaml

• Font: some attributes of some modules uses a color name as values. The name of the color must be defined in the leptons.yaml configuration file. Examples:

  • black in t-c-black is the value for the black entry defined in the colors collection of the config file leptons.yaml

License

Copyright © 2019-2021 Carlos Forero

Atomic Styles is released under the MIT License.