Module: CSSSprites

Defined in:
lib/css_sprites.rb,
lib/css_sprites/version.rb

Defined Under Namespace

Classes: CLI, ImageGrid, Sprite, SpriteStylesheet

Constant Summary collapse

VERSION = 
'0.1.1'

Class Method Summary collapse

Class Method Details

.generate_sprite(path, options = {}) ⇒ Object

Generates a sprite from all PNG files in the directory specified by path. Saves a PNG file and a CSS file in the specified directory’s parent directory. Returns the path to the directory to which those files were saved to.



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# File 'lib/css_sprites.rb', line 11

def self.generate_sprite(path, options = {})
  output_path = options[:output] || File.dirname(path)

  fail ArgumentError, "Directory #{ output_path } does not exist" unless Dir.exists?(output_path)
  fail ArgumentError, "You have no writing permissions for directory #{ output_path }" unless File.writable?(output_path)

  sprite = Sprite.new(path, options)

  output_file = "#{ output_path }/#{ sprite.name }"
  sprite.image.write("#{ output_file }.png")
  File.write("#{ output_file }.css", sprite.stylesheet)

  File.realpath(output_path)
end