Module: SpriteFactory::Layout::Horizontal

Defined in:
lib/sprite_factory/layout/horizontal.rb

Class Method Summary collapse

Class Method Details

.layout(images, options = {}) ⇒ Object 



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# File 'lib/sprite_factory/layout/horizontal.rb', line 5

def self.layout(images, options = {})
  width      = options[:width]
  height     = options[:height]
  hpadding   = options[:hpadding] || 0
  vpadding   = options[:vpadding] || 0
  hmargin    = options[:hmargin]  || 0
  vmargin    = options[:vmargin]  || 0
  max_height = height || (2 *(vpadding + vmargin) + images.map{|i| i[:height]}.max)
  x = 0
  images.each do |i|

    if width
      i[:cssw] = width
      i[:cssx] = x
      i[:x]    = x + (width - i[:width]) / 2
    else
      i[:cssw] = i[:width]  + (2 * hpadding)   # image width plus padding
      i[:cssx] = x + hmargin                   # anchored at x
      i[:x]    = i[:cssx] + hpadding           # image drawn offset to account for padding
    end

    if height
      i[:cssh] = height
      i[:cssy] = 0
      i[:y]    = 0 + (height - i[:height]) / 2
    else
      i[:cssh] = i[:height] + (2 * vpadding)   # image height plus padding
      i[:cssy] = (max_height - i[:cssh]) / 2   # centered vertically
      i[:y]    = i[:cssy] + vpadding           # image drawn offset to account for padding
    end

    x += i[:cssw] + 2 * hmargin

  end 
  { :width  => x, :height => max_height }
end