Class: Morandi::Operation::Colourify

Inherits:
ImageOperation
  • Object
show all
Defined in:
lib/morandi/operation/colourify.rb

Overview

Colourify Operation Apply tint to image with variable strength Supports filter, alpha

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#filter ⇒ Object (readonly)

Returns the value of attribute filter.



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# File 'lib/morandi/operation/colourify.rb', line 11

def filter
  @filter
end

Instance Method Details

#alpha ⇒ Object 



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# File 'lib/morandi/operation/colourify.rb', line 13

def alpha
  @alpha || 255
end

#bluetone(pixbuf) ⇒ Object 



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# File 'lib/morandi/operation/colourify.rb', line 21

def bluetone(pixbuf)
  MorandiNative::PixbufUtils.tint(pixbuf, -10, 5, 25, alpha)
end

#call(pixbuf) ⇒ Object 



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# File 'lib/morandi/operation/colourify.rb', line 36

def call(pixbuf)
  if @filter && respond_to?(@filter)
    __send__(@filter, pixbuf)
  else
    pixbuf # Default is nothing
  end
end

#greyscale(pixbuf) ⇒ Object Also known as: bw 



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# File 'lib/morandi/operation/colourify.rb', line 31

def greyscale(pixbuf)
  MorandiNative::PixbufUtils.tint(pixbuf, 0, 0, 0, alpha)
end

#null(pixbuf) ⇒ Object Also known as: full, colour 



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# File 'lib/morandi/operation/colourify.rb', line 25

def null(pixbuf)
  pixbuf
end

#sepia(pixbuf) ⇒ Object 



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# File 'lib/morandi/operation/colourify.rb', line 17

def sepia(pixbuf)
  MorandiNative::PixbufUtils.tint(pixbuf, 25, 5, -25, alpha)
end