Class: Sprite::Builder

Inherits:
Object
  • Object
show all
Defined in:
lib/sprite/builder.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(config = nil, images = nil) ⇒ Builder

Returns a new instance of Builder.



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# File 'lib/sprite/builder.rb', line 12

def initialize(config = nil, images = nil)
  @config = config || {}
  set_config_defaults

  @images = images || []
  if @images.empty?
    @images = default_images
  end
  expand_image_paths

  # initialize datestamp
  @datestamp_query = "?#{Time.now.to_i}" if @config["add_datestamps"]

  # initialize sprite files
  @sprite_files = {}
end

Instance Attribute Details

#config ⇒ Object (readonly)

Returns the value of attribute config.



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# File 'lib/sprite/builder.rb', line 4

def config
  @config
end

#images ⇒ Object (readonly)

Returns the value of attribute images.



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# File 'lib/sprite/builder.rb', line 5

def images
  @images
end

Class Method Details

.from_config(path = nil) ⇒ Object 



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# File 'lib/sprite/builder.rb', line 7

def self.from_config(path = nil)
  results = Config.read_config(path)
  new(results["config"], results["images"])
end

Instance Method Details

#build ⇒ Object 



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# File 'lib/sprite/builder.rb', line 29

def build
  @sprite_files = {}

  if images.size > 0
    # create images
    images.each do |image|
      write_image(image)
    end

    if @sprite_files.values.length > 0
      # write css
      write_styles
    end
  end
end

#image_path(group) ⇒ Object 



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# File 'lib/sprite/builder.rb', line 56

def image_path(group)
  image_info = images.detect{|image| image['name'] == group}
  image_config = ImageConfig.new(image_info, config)

  cache_buster = "-#{config['cache_buster']}" if config['cache_buster']
  sprite_file = "#{image_config.name}#{cache_buster}.#{image_config.format}"
  "#{config['css_image_path']}#{sprite_file}"
end

#style_output_path(relative = false) ⇒ Object

get the disk path for the style output file



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# File 'lib/sprite/builder.rb', line 46

def style_output_path(relative = false)
  style = Styles.get(config["style"]).new(self)

  path = config['style_output_path']
  unless path.include?(".#{style.extension}")
    path = "#{path}.#{style.extension}"
  end
  Config.new(config).public_path(path, relative)
end