Method: RBPDF#SetDrawColor

Defined in:

lib/rbpdf.rb

#SetDrawColor(col1 = 0, col2 = -1,, col3 = -1,, col4 = -1)) ⇒ Object Also known as: set_draw_color

Defines the color used for all drawing operations (lines, rectangles and cell borders). It can be expressed in RGB components or gray scale. The method can be called before the first page is created and the value is retained from page to page.

@param int :col1

Gray level for single color, or Red color for RGB, or Cyan color for CMYK. Value between 0 and 255

@param int :col2

Green color for RGB, or Magenta color for CMYK. Value between 0 and 255

@param int :col3

Blue color for RGB, or Yellow color for CMYK. Value between 0 and 255

@param int :col4

Key (Black) color for CMYK. Value between 0 and 255

@access public

@since 1.3

@see

SetFillColor(), SetTextColor(), Line(), Rect(), Cell(), MultiCell()

# File 'lib/rbpdf.rb', line 2283

def SetDrawColor(col1=0, col2=-1, col3=-1, col4=-1)
  # set default values
  unless col1.is_a?(Numeric)
    col1 = 0
  end
  unless col2.is_a?(Numeric)
    col2 = 0
  end
  unless col3.is_a?(Numeric)
    col3 = 0
  end
  unless col4.is_a?(Numeric)
    col4 = 0
  end
  #Set color for all stroking operations
  if (col2 == -1) and (col3 == -1) and (col4 == -1)
    # Grey scale
    @draw_color = sprintf('%.3f G', col1 / 255.0)
    @strokecolor = [col1]
  elsif col4 == -1
    # RGB
    @draw_color = sprintf('%.3f %.3f %.3f RG', col1 / 255.0, col2 / 255.0, col3 / 255.0)
    @strokecolor = [col1, col2, col3]
  else
    # CMYK
    @draw_color = sprintf('%.3f %.3f %.3f %.3f K', col1 / 100.0, col2 / 100.0, col3 / 100.0, col4 / 100.0)
    @strokecolor = [col1, col2, col3, col4]
  end
  if (@page>0)
    out(@draw_color + ' ')
  end
end