Class: Bio::Graphics::ImageMap

Inherits:
Object
  • Object
show all
Defined in:
lib/bio/graphics/image_map.rb

Overview

bio/graphics/image_map.rb - create the image map for clickable images

Copyright

Copyright © 2007 Jan Aerts <[email protected]> Charles Comstock <[email protected]>

License

Ruby’s

Defined Under Namespace

Classes: Element

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ ImageMap

Returns a new instance of ImageMap.



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# File 'lib/bio/graphics/image_map.rb', line 9

def initialize
  @elements = Array.new
end

Instance Attribute Details

#elements ⇒ Object

Returns the value of attribute elements.



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# File 'lib/bio/graphics/image_map.rb', line 12

def elements
  @elements
end

Instance Method Details

#add_element(left, top, right, bottom, url = nil) ⇒ Object 



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# File 'lib/bio/graphics/image_map.rb', line 14

def add_element(left,top,right,bottom,url = nil)
  @elements.push(Element.new(left,top,right,bottom,url))
end

#flip_orientation(width) ⇒ Object

Switch horizontal to vertical orientation



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# File 'lib/bio/graphics/image_map.rb', line 33

def flip_orientation(width)
  @elements.each do |element|
    left, top, right, bottom = element.left, element.top, element.right, element.bottom
    element.left = top
    element.top = width - right
    element.right = bottom
    element.bottom = width - left
  end
end

#to_s ⇒ Object 



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# File 'lib/bio/graphics/image_map.rb', line 18

def to_s
  output = Array.new
  output.push('<map name="image_map" border="1">')
  @elements.each do |e|
    area = e.to_s
    if area != ''
      output.push(e.to_s)
    end
  end
  output.push('</map>')
  return output.join("\n")
end