Method: RBPDF#setAlpha

Defined in:
lib/rbpdf.rb

#setAlpha(alpha, bm = 'Normal') ⇒ Object Also known as: set_alpha

Set alpha for stroking (CA) and non-stroking (ca) operations.

@param float :alpha

real value from 0 (transparent) to 1 (opaque)

@param string :bm

blend mode, one of the following: Normal, Multiply, Screen, Overlay, Darken, Lighten, ColorDodge, ColorBurn, HardLight, SoftLight, Difference, Exclusion, Hue, Saturation, Color, Luminosity

@access public
@since 3.0.000 (2008-03-27)


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# File 'lib/rbpdf.rb', line 11634

def setAlpha(alpha, bm='Normal')
  gs = addExtGState({'ca' => alpha, 'CA' => alpha, 'BM' => '/' + bm, 'AIS' => 'false'})
  setExtGState(gs)
end