Glimmer DSL for CSS 1.2.0

Glimmer DSL for CSS provides Ruby syntax for building CSS (Cascading Style Sheets).

Within the context of Glimmer app development, Glimmer DSL for CSS is useful in providing CSS for the SWT Browser widget.

Additionally, it is useful with Glimmer DSL for Opal

Other Glimmer DSL gems:

glimmer-dsl-swt: Glimmer DSL for SWT (JRuby Desktop Development GUI Library)
glimmer-dsl-tk: Glimmer DSL for Tk (Ruby Desktop Development GUI Library)
glimmer-dsl-opal: Glimmer DSL for Opal (Web GUI Adapter for Desktop Apps)
glimmer-dsl-xml: Glimmer DSL for XML (& HTML)

Setup

Please follow these instructions to make the glimmer command available on your system.

Option 1: Direct Install

Run this command to install directly:

gem install glimmer-dsl-css -v 1.2.0

Note: In case you are using JRuby, jgem is JRuby's version of the gem command. RVM allows running gem as an alias in JRuby. Otherwise, you may also run jruby -S gem install ...

Add require 'glimmer-dsl-css' to your code.

When using with Glimmer DSL for SWT or Glimmer DSL for Opal, make sure it is added after require glimmer-dsl-swt and require glimmer-dsl-opal to give it a lower precedence than them when processed by the Glimmer DSL engine.

That's it! Requiring the gem activates the Glimmer CSS DSL automatically.

Option 2: Bundler

Add the following to Gemfile (after glimmer-dsl-swt and/or glimmer-dsl-opal if included too):

gem 'glimmer-dsl-css', '~> 1.2.0'

And, then run:

bundle install

Note: When using JRuby, prefix with jruby -S

Require in your code via Bundler (e.g. require 'bundler'; Bundler.require) or add require 'glimmer-dsl-css' to your code.

When using with Glimmer DSL for SWT or Glimmer DSL for Opal, make sure it is loaded after glimmer-dsl-swt and glimmer-dsl-opal to give it a lower precedence than them when processed by the Glimmer DSL engine.

That's it! Requiring the gem activates the Glimmer CSS DSL automatically.

CSS DSL

The key reason for using the CSS DSL instead of actual CSS is Ruby programmability without getting lost in string concatenations. The CSS DSL helps in including conditional CSS as well as looping from lists while building CSS.

Simply start with css keyword and add stylesheet rule sets inside its block using Glimmer DSL syntax. Once done, you may call to_s or to_css to get the formatted CSS output.

css is the only top-level keyword in the Glimmer CSS DSL

Selectors may be specified by s keyword or HTML element keyword directly (e.g. body) Rule property values may be specified by pv keyword or underscored property name directly (e.g. font_size)

Example (you can try in IRB):

require 'glimmer-dsl-css'
include Glimmer
@css = css {
  body {
    font_size '1.1em'
    pv 'background', 'white'
  }
  s('body > h1') {
    background_color :red
    pv 'font-size', 24
  }
}
puts @css

Output (minified CSS):

body{font-size:1.1em;background:white}body > h1{background-color:red;font-size:24px}

Numeric Values

As you saw above, numeric values (e.g. 24 in pv 'font-size', 24) automatically get suffixed with px by convention (e.g. 24px).

Multi-DSL Support

Learn more about how to use this DSL alongside other Glimmer DSLs:

Glimmer Multi-DSL Support

Help

Issues

You may submit issues on GitHub.

Click here to submit an issue.

Chat

If you need live help, try to

Feature Suggestions

These features have been suggested. You might see them in a future version of Glimmer. You are welcome to contribute more feature suggestions.

TODO.md

Change Log

CHANGELOG.md

Contributing

CONTRIBUTING.md

Contributors

Andy Maleh (Founder)

Click here to view contributor commits.

License

MIT

Built for Glimmer (Ruby Desktop Development GUI Library).