Class: Html2Odt::Image

Inherits:
Object
  • Object
show all
Defined in:
lib/html2odt/image.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(target_base) ⇒ Image

Returns a new instance of Image.



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# File 'lib/html2odt/image.rb', line 4

def initialize(target_base)
  @target_base = target_base
  @valid = nil
end

Instance Attribute Details

#source ⇒ Object

Returns the value of attribute source.



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# File 'lib/html2odt/image.rb', line 2

def source
  @source
end

Instance Method Details

#angle ⇒ Object 



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# File 'lib/html2odt/image.rb', line 85

def angle
  return unless valid?

  @angle
end

#extension ⇒ Object 



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# File 'lib/html2odt/image.rb', line 57

def extension
  return unless valid?

  if type == :jpeg
    "jpg"
  else
    type
  end
end

#height ⇒ Object 



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# File 'lib/html2odt/image.rb', line 79

def height
  return unless valid?

  @height
end

#mime_type ⇒ Object 



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# File 'lib/html2odt/image.rb', line 67

def mime_type
  return unless valid?

  "image/#{type}"
end

#target ⇒ Object 



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# File 'lib/html2odt/image.rb', line 91

def target
  return unless valid?

  "Pictures/#{@target_base}.#{extension}"
end

#type ⇒ Object 



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# File 'lib/html2odt/image.rb', line 53

def type
  valid? ? @type : nil
end

#valid? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/html2odt/image.rb', line 20

def valid?
  return false if source.nil? or !File.readable?(source)

  if @valid.nil?
    File.open(source, "rb") do |io|
      Dimensions(io)
      io.extend Html2Odt::DimensionsPatches

      # Interacting with Dimensions::Reader directly to
      #
      #   a) avoid reading the file multiple times
      #   b) get type info

      io.send :peek
      reader = io.instance_variable_get :@reader

      if reader.type && reader.width && reader.height
        @type = reader.type

        @width  = reader.width
        @height = reader.height
        @angle  = reader.angle

        @valid = true
      else
        @valid = false
      end
    end
  end

  @valid
end

#width ⇒ Object 



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# File 'lib/html2odt/image.rb', line 73

def width
  return unless valid?

  @width
end