Module: SpriteFactory::Layout::Vertical

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

Class Method Summary collapse

Class Method Details

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



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# File 'lib/sprite_factory/layout/vertical.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_width = width || (2 * (hpadding + hmargin) + images.map{|i| i[:width]}.max)
  y = 0
  images.each do |i|

    if width
      i[:cssw] = width
      i[:cssx] = 0
      i[:x]    = 0 + (width - i[:width]) / 2
    else
      i[:cssw] = i[:width]  + (2 * hpadding)  # image width plus padding
      i[:cssx] = (max_width - i[:cssw]) / 2   # centered horizontally
      i[:x]    = i[:cssx] + hpadding          # image drawn offset to account for padding
    end

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

    y += i[:cssh] + 2 * vmargin

  end
  { :width => max_width, :height => y }
end