Class: QREncoder::PNG

Inherits:

Object

• Object
• QREncoder::PNG

show all

Defined in:

lib/qrencoder/png.rb

Instance Attribute Summary (collapse)

• - (Object) background readonly

  Returns the value of attribute background.

• - (Object) canvas readonly

  Returns the value of attribute canvas.

• - (Object) margin readonly

  Returns the value of attribute margin.

• - (Object) pixels_per_module readonly

  Returns the value of attribute pixels_per_module.

• - (Object) points readonly

  Returns the value of attribute points.

• - (Object) width readonly

  Returns the value of attribute width.

Instance Method Summary (collapse)

• - (PNG) initialize(qrcode, options = {}) constructor

  Takes an optional hash of options.

• - (Object) method_missing(method, *args, &block)
• - (Boolean) respond_to?(method)

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# File 'lib/qrencoder/png.rb', line 14

def initialize(qrcode, options={})
  @points = qrcode.points
  @margin = options[:margin] || 4
  @pixels_per_module= options[:pixels_per_module] || 1
  @background = options[:transparent] ? ChunkyPNG::Color::TRANSPARENT : ChunkyPNG::Color::WHITE
  @width = (qrcode.width + (2 * margin)) * pixels_per_module

  @canvas = ChunkyPNG::Image.new(width, width, background)
  plot_points
end

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# File 'lib/qrencoder/png.rb', line 25

def method_missing(method, *args, &block)
  if canvas.respond_to?(method)
    canvas.send(method, *args, &block)
  else
    super
  end
end

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# File 'lib/qrencoder/png.rb', line 5

def background
  @background
end

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# File 'lib/qrencoder/png.rb', line 5

def canvas
  @canvas
end

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# File 'lib/qrencoder/png.rb', line 5

def margin
  @margin
end

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# File 'lib/qrencoder/png.rb', line 5

def pixels_per_module
  @pixels_per_module
end

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# File 'lib/qrencoder/png.rb', line 5

def points
  @points
end

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# File 'lib/qrencoder/png.rb', line 5

def width
  @width
end

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# File 'lib/qrencoder/png.rb', line 33

def respond_to?(method)
  super || canvas.respond_to?(method)
end