Class: Grandstand::Image

Inherits:
ActiveRecord::Base
  • Object
show all
Defined in:
app/models/grandstand/image.rb

Class Method Summary collapse

Class Method Details

.sizes ⇒ Object

Returns the image sizes available for embedding in the public-facing pages. Sorts by potential pixel dimensions, so icon sizes (75x75) return as smaller than page-width sizes (500x500 or whatever). Also adds a fun description for the WYSIWYG editor, so ‘1024x768#’ becomes ‘1024 x 768 (cropped)’ in the event that the user is unhappy with whatever goddamn sizes they’re intended to accept.



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# File 'app/models/grandstand/image.rb', line 29

def sizes
  return @sizes if defined? @sizes
  sorted_sizes = ActiveSupport::OrderedHash.new
  Grandstand::Image.attachment_definitions[:file][:styles].reject {|style, dimensions| style.to_s =~ /^grandstand_/ }.inject({}) do |sizes, style_definition|
    style, dimensions = style_definition
    width, height = dimensions.gsub(/[^0-9x]/, '').split('x').map(&:to_i)
    width ||= 0
    height ||= 0
    if width.zero?
      description = "#{height} pixel#{'s' unless height == 1} tall; width to scale"
    elsif height.zero?
      description = "#{width} pixel#{'s' unless width == 1} wide; height to scale"
    else
      description = "#{width} x #{height}"
    end
    additional = []
    clean_dimensions = dimensions.gsub(/[0-9x]/, '')
    if clean_dimensions =~ /\#$/
      additional.push('cropped')
    end
    description << " (#{additional.join(', ')})" unless additional.empty?
    sizes[style.to_sym] = {:description => description, :dimensions => dimensions, :size => (width.zero? ? height : width) * (height.zero? ? width : height)}
    sizes
  end.sort {|a, b| a[1][:size] <=> b[1][:size] }.each do |key, value|
    sorted_sizes[key] = value
  end
  sorted_sizes
end