class Color::CMYK

# File lib/color/cmyk.rb, line 69
def self.from_percentage(*args, **kwargs)
  c, m, y, k =
    case [args, kwargs]
    in [[_, _, _, _], {}]
      args
    in [[], {c:, m:, y:, k:}]
      [c, m, y, k]
    else
      new(*args, **kwargs)
    end

  new(c: c / 100.0, m: m / 100.0, y: y / 100.0, k: k / 100.0)
end

# File lib/color/cmyk.rb, line 98
def initialize(c:, m:, y:, k:)
  super(c: normalize(c), m: normalize(m), y: normalize(y), k: normalize(k))
end

# File lib/color/cmyk.rb, line 168
def coerce(other) = other.to_cmyk

##
def to_cmyk(...) = self

##
# Converts CMYK to Color::Grayscale.
#
# There are multiple methods for grayscale conversion, but this implements a variant of
# the Adobe PDF conversion method with higher precision:
#
# ```
# g = 1.0 - min(1.0, 0.299 * c + 0.587 * m + 0.114 * y + k)
# ```
#
# The default Adobe conversion uses lower precision conversion constants (0.3, 0.59, and
# 0.11) instead of the more precise NTSC/YIQ values.
def to_grayscale(...)
  gc = 0.299 * c
  gm = 0.587 * m
  gy = 0.114 * y
  g = 1.0 - [1.0, gc + gm + gy + k].min
  Color::Grayscale.from_fraction(g)
end

##
# Converts CMYK to Color::YIQ via Color::RGB.
def to_yiq(...) = to_rgb(...).to_yiq(...)

##
# Converts CMYK to Color::RGB.
#
# Most color experts strongly suggest that this is not a good idea (some suggesting that
# it's a very bad idea). CMYK represents additive percentages of inks on white paper,
# whereas RGB represents mixed color intensities on an unlit (black) screen.
#
# The color conversion can be done and there are two different methods (standard and
# Adobe PDF) that provide slightly different results. Using CMYK [33% 66% 83% 25%], the
# standard method provides an approximate RGB color of (128, 65, 33) or #804121. The
# Adobe PDF method provides an approximate RGB color of (107, 23, 0) or #6b1700.
#
# Which is correct? The colors may seem to be drastically different in the RGB color
# space, they differ mostly in intensity. The Adobe PDF conversion is a darker, slightly
# redder brown; the standard conversion is a lighter brown. Because of this subtlety,
# both methods are offered for conversion. The Adobe PDF method is not used by default;
# to use it, pass `rgb_method: :adobe` to #to_rgb.
#
#   # Adobe PDF CMYK -> RGB Conversion
#   r = 1.0 - min(1.0, c + k)
#   g = 1.0 - min(1.0, m + k)
#   b = 1.0 - min(1.0, y + k)
#
#   # Standard CMYK -> RGB Conversion
#   r = 1.0 - (c * (1.0 - k) + k)
#   g = 1.0 - (m * (1.0 - k) + k)
#   b = 1.0 - (y * (1.0 - k) + k)
#
# :call-seq:
#   to_rgb(rgb_method: :standard)
def to_rgb(*args, **kwargs)
  values =
    if kwargs[:rgb_method] == :adobe || args.first == :adobe
      adobe_cmyk_rgb
    else
      standard_cmyk_rgb
    end

  Color::RGB.from_fraction(*values)
end

##
# Converts CMYK to Color::HSL via Color::RGB.
def to_hsl(...) = to_rgb(...).to_hsl(...)

##
# Converts CMYK to Color::CIELAB via Color::RGB.
def to_lab(...) = to_rgb(...).to_lab(...)

##
# Converts CMYK to Color::XYZ via Color::RGB.
def to_xyz(...) = to_rgb(...).to_xyz(...)

##
def inspect = "CMYK [%.2f%% %.2f%% %.2f%% %.2f%%]" % [cyan, magenta, yellow, key] # :nodoc:

##
def pretty_print(q) # :nodoc:
  q.text "CMYK"
  q.breakable
  q.group 2, "[", "]" do
    q.text ".2f%%" % cyan
    q.fill_breakable
    q.text ".2f%%" % magenta
    q.fill_breakable
    q.text ".2f%%" % yellow
    q.fill_breakable
    q.text ".2f%%" % key
    q.fill_breakable
  end
end

##
def cyan = c * 100.0 # :nodoc:

##
def magenta = m * 100.0 # :nodoc:

##
def yellow = y * 100.0 # :nodoc:

##
alias_method :b, :k # :nodoc:

##
def key = k * 100.0 # :nodoc:

##
alias_method :black, :key # :nodoc:

##
def to_a = [cyan, magenta, yellow, key] # :nodoc:

##
alias_method :deconstruct, :to_a # :nodoc:

##
def deconstruct_keys(_keys) = {c:, m:, y:, k:, cyan:, magenta:, yellow:, key:} # :nodoc:

##
def to_internal = [c, m, y, k] # :nodoc:

##
def components = 4 # :nodoc:

private

##
# Implements the Adobe PDF conversion of CMYK to RGB.
def adobe_cmyk_rgb = [c, m, y].map { 1.0 - [1.0, _1 + k].min } # :nodoc:

##
# Implements the standard conversion of CMYK to RGB.
def standard_cmyk_rgb = [c, m, y].map { 1.0 - (_1 * (1.0 - k) + k) } # :nodoc:

##
def device_cmyk(alpha, fallback, fallback_alpha) # :nodoc:
  params = [
    css_value(cyan, :percent),
    css_value(magenta, :percent),
    css_value(yellow, :percent),
    css_value(key, :percent)
  ].join(" ")
  params = "#{params} / #{css_value(alpha)}" if alpha
  fallback =

# File lib/color/cmyk.rb, line 154
def css(alpha: nil, fallback: true)
  if fallback.is_a?(Color)
    device_cmyk(alpha, fallback, alpha)
  elsif fallback.is_a?(Hash)
    device_cmyk(alpha, fallback.fetch(:color) { to_rgb }, fallback[:alpha])
  elsif fallback == true
    device_cmyk(alpha, to_rgb, alpha)
  else
    device_cmyk(alpha, nil, nil)
  end
end

# File lib/color/cmyk.rb, line 171
def to_cmyk(...) = self

##
# Converts CMYK to Color::Grayscale.
#
# There are multiple methods for grayscale conversion, but this implements a variant of
# the Adobe PDF conversion method with higher precision:
#
# ```
# g = 1.0 - min(1.0, 0.299 * c + 0.587 * m + 0.114 * y + k)
# ```
#
# The default Adobe conversion uses lower precision conversion constants (0.3, 0.59, and
# 0.11) instead of the more precise NTSC/YIQ values.
def to_grayscale(...)
  gc = 0.299 * c
  gm = 0.587 * m
  gy = 0.114 * y
  g = 1.0 - [1.0, gc + gm + gy + k].min
  Color::Grayscale.from_fraction(g)
end

##
# Converts CMYK to Color::YIQ via Color::RGB.
def to_yiq(...) = to_rgb(...).to_yiq(...)

##
# Converts CMYK to Color::RGB.
#
# Most color experts strongly suggest that this is not a good idea (some suggesting that
# it's a very bad idea). CMYK represents additive percentages of inks on white paper,
# whereas RGB represents mixed color intensities on an unlit (black) screen.
#
# The color conversion can be done and there are two different methods (standard and
# Adobe PDF) that provide slightly different results. Using CMYK [33% 66% 83% 25%], the
# standard method provides an approximate RGB color of (128, 65, 33) or #804121. The
# Adobe PDF method provides an approximate RGB color of (107, 23, 0) or #6b1700.
#
# Which is correct? The colors may seem to be drastically different in the RGB color
# space, they differ mostly in intensity. The Adobe PDF conversion is a darker, slightly
# redder brown; the standard conversion is a lighter brown. Because of this subtlety,
# both methods are offered for conversion. The Adobe PDF method is not used by default;
# to use it, pass `rgb_method: :adobe` to #to_rgb.
#
#   # Adobe PDF CMYK -> RGB Conversion
#   r = 1.0 - min(1.0, c + k)
#   g = 1.0 - min(1.0, m + k)
#   b = 1.0 - min(1.0, y + k)
#
#   # Standard CMYK -> RGB Conversion
#   r = 1.0 - (c * (1.0 - k) + k)
#   g = 1.0 - (m * (1.0 - k) + k)
#   b = 1.0 - (y * (1.0 - k) + k)
#
# :call-seq:
#   to_rgb(rgb_method: :standard)
def to_rgb(*args, **kwargs)
  values =
    if kwargs[:rgb_method] == :adobe || args.first == :adobe
      adobe_cmyk_rgb
    else
      standard_cmyk_rgb
    end

  Color::RGB.from_fraction(*values)
end

##
# Converts CMYK to Color::HSL via Color::RGB.
def to_hsl(...) = to_rgb(...).to_hsl(...)

##
# Converts CMYK to Color::CIELAB via Color::RGB.
def to_lab(...) = to_rgb(...).to_lab(...)

##
# Converts CMYK to Color::XYZ via Color::RGB.
def to_xyz(...) = to_rgb(...).to_xyz(...)

##
def inspect = "CMYK [%.2f%% %.2f%% %.2f%% %.2f%%]" % [cyan, magenta, yellow, key] # :nodoc:

##
def pretty_print(q) # :nodoc:
  q.text "CMYK"
  q.breakable
  q.group 2, "[", "]" do
    q.text ".2f%%" % cyan
    q.fill_breakable
    q.text ".2f%%" % magenta
    q.fill_breakable
    q.text ".2f%%" % yellow
    q.fill_breakable
    q.text ".2f%%" % key
    q.fill_breakable
  end
end

##
def cyan = c * 100.0 # :nodoc:

##
def magenta = m * 100.0 # :nodoc:

##
def yellow = y * 100.0 # :nodoc:

##
alias_method :b, :k # :nodoc:

##
def key = k * 100.0 # :nodoc:

##
alias_method :black, :key # :nodoc:

##
def to_a = [cyan, magenta, yellow, key] # :nodoc:

##
alias_method :deconstruct, :to_a # :nodoc:

##
def deconstruct_keys(_keys) = {c:, m:, y:, k:, cyan:, magenta:, yellow:, key:} # :nodoc:

##
def to_internal = [c, m, y, k] # :nodoc:

##
def components = 4 # :nodoc:

private

##
# Implements the Adobe PDF conversion of CMYK to RGB.
def adobe_cmyk_rgb = [c, m, y].map { 1.0 - [1.0, _1 + k].min } # :nodoc:

##
# Implements the standard conversion of CMYK to RGB.
def standard_cmyk_rgb = [c, m, y].map { 1.0 - (_1 * (1.0 - k) + k) } # :nodoc:

##
def device_cmyk(alpha, fallback, fallback_alpha) # :nodoc:
  params = [
    css_value(cyan, :percent),
    css_value(magenta, :percent),
    css_value(yellow, :percent),
    css_value(key, :percent)
  ].join(" ")
  params = "#{params} / #{css_value(alpha)}" if alpha
  fallback = fallback

# File lib/color/cmyk.rb, line 185
def to_grayscale(...)
  gc = 0.299 * c
  gm = 0.587 * m
  gy = 0.114 * y
  g = 1.0 - [1.0, gc + gm + gy + k].min
  Color::Grayscale.from_fraction(g)
end

# File lib/color/cmyk.rb, line 240
def to_hsl(...) = to_rgb(...).to_hsl(...)

##
# Converts CMYK to Color::CIELAB via Color::RGB.
def to_lab(...) = to_rgb(...).to_lab(...)

##
# Converts CMYK to Color::XYZ via Color::RGB.
def to_xyz(...) = to_rgb(...).to_xyz(...)

##
def inspect = "CMYK [%.2f%% %.2f%% %.2f%% %.2f%%]" % [cyan, magenta, yellow, key] # :nodoc:

##
def pretty_print(q) # :nodoc:
  q.text "CMYK"
  q.breakable
  q.group 2, "[", "]" do
    q.text ".2f%%" % cyan
    q.fill_breakable
    q.text ".2f%%" % magenta
    q.fill_breakable
    q.text ".2f%%" % yellow
    q.fill_breakable
    q.text ".2f%%" % key
    q.fill_breakable
  end
end

##
def cyan = c * 100.0 # :nodoc:

##
def magenta = m * 100.0 # :nodoc:

##
def yellow = y * 100.0 # :nodoc:

##
alias_method :b, :k # :nodoc:

##
def key = k * 100.0 # :nodoc:

##
alias_method :black, :key # :nodoc:

##
def to_a = [cyan, magenta, yellow, key] # :nodoc:

##
alias_method :deconstruct, :to_a # :nodoc:

##
def deconstruct_keys(_keys) = {c:, m:, y:, k:, cyan:, magenta:, yellow:, key:} # :nodoc:

##
def to_internal = [c, m, y, k] # :nodoc:

##
def components = 4 # :nodoc:

private

##
# Implements the Adobe PDF conversion of CMYK to RGB.
def adobe_cmyk_rgb = [c, m, y].map { 1.0 - [1.0, _1 + k].min } # :nodoc:

##
# Implements the standard conversion of CMYK to RGB.
def standard_cmyk_rgb = [c, m, y].map { 1.0 - (_1 * (1.0 - k) + k) } # :nodoc:

##
def device_cmyk(alpha, fallback, fallback_alpha) # :nodoc:
  params = [
    css_value(cyan, :percent),
    css_value(magenta, :percent),
    css_value(yellow, :percent),
    css_value(key, :percent)
  ].join(" ")
  params = "#{params} / #{css_value(alpha)}" if alpha
  fallback = fallback&.css(alpha:

# File lib/color/cmyk.rb, line 244
def to_lab(...) = to_rgb(...).to_lab(...)

##
# Converts CMYK to Color::XYZ via Color::RGB.
def to_xyz(...) = to_rgb(...).to_xyz(...)

##
def inspect = "CMYK [%.2f%% %.2f%% %.2f%% %.2f%%]" % [cyan, magenta, yellow, key] # :nodoc:

##
def pretty_print(q) # :nodoc:
  q.text "CMYK"
  q.breakable
  q.group 2, "[", "]" do
    q.text ".2f%%" % cyan
    q.fill_breakable
    q.text ".2f%%" % magenta
    q.fill_breakable
    q.text ".2f%%" % yellow
    q.fill_breakable
    q.text ".2f%%" % key
    q.fill_breakable
  end
end

##
def cyan = c * 100.0 # :nodoc:

##
def magenta = m * 100.0 # :nodoc:

##
def yellow = y * 100.0 # :nodoc:

##
alias_method :b, :k # :nodoc:

##
def key = k * 100.0 # :nodoc:

##
alias_method :black, :key # :nodoc:

##
def to_a = [cyan, magenta, yellow, key] # :nodoc:

##
alias_method :deconstruct, :to_a # :nodoc:

##
def deconstruct_keys(_keys) = {c:, m:, y:, k:, cyan:, magenta:, yellow:, key:} # :nodoc:

##
def to_internal = [c, m, y, k] # :nodoc:

##
def components = 4 # :nodoc:

private

##
# Implements the Adobe PDF conversion of CMYK to RGB.
def adobe_cmyk_rgb = [c, m, y].map { 1.0 - [1.0, _1 + k].min } # :nodoc:

##
# Implements the standard conversion of CMYK to RGB.
def standard_cmyk_rgb = [c, m, y].map { 1.0 - (_1 * (1.0 - k) + k) } # :nodoc:

##
def device_cmyk(alpha, fallback, fallback_alpha) # :nodoc:
  params = [
    css_value(cyan, :percent),
    css_value(magenta, :percent),
    css_value(yellow, :percent),
    css_value(key, :percent)
  ].join(" ")
  params = "#{params} / #{css_value(alpha)}" if alpha
  fallback = fallback&.css(alpha: fallback_alpha

# File lib/color/cmyk.rb, line 227
def to_rgb(*args, **kwargs)
  values =
    if kwargs[:rgb_method] == :adobe || args.first == :adobe
      adobe_cmyk_rgb
    else
      standard_cmyk_rgb
    end

  Color::RGB.from_fraction(*values)
end

# File lib/color/cmyk.rb, line 248
def to_xyz(...) = to_rgb(...).to_xyz(...)

##
def inspect = "CMYK [%.2f%% %.2f%% %.2f%% %.2f%%]" % [cyan, magenta, yellow, key] # :nodoc:

##
def pretty_print(q) # :nodoc:
  q.text "CMYK"
  q.breakable
  q.group 2, "[", "]" do
    q.text ".2f%%" % cyan
    q.fill_breakable
    q.text ".2f%%" % magenta
    q.fill_breakable
    q.text ".2f%%" % yellow
    q.fill_breakable
    q.text ".2f%%" % key
    q.fill_breakable
  end
end

##
def cyan = c * 100.0 # :nodoc:

##
def magenta = m * 100.0 # :nodoc:

##
def yellow = y * 100.0 # :nodoc:

##
alias_method :b, :k # :nodoc:

##
def key = k * 100.0 # :nodoc:

##
alias_method :black, :key # :nodoc:

##
def to_a = [cyan, magenta, yellow, key] # :nodoc:

##
alias_method :deconstruct, :to_a # :nodoc:

##
def deconstruct_keys(_keys) = {c:, m:, y:, k:, cyan:, magenta:, yellow:, key:} # :nodoc:

##
def to_internal = [c, m, y, k] # :nodoc:

##
def components = 4 # :nodoc:

private

##
# Implements the Adobe PDF conversion of CMYK to RGB.
def adobe_cmyk_rgb = [c, m, y].map { 1.0 - [1.0, _1 + k].min } # :nodoc:

##
# Implements the standard conversion of CMYK to RGB.
def standard_cmyk_rgb = [c, m, y].map { 1.0 - (_1 * (1.0 - k) + k) } # :nodoc:

##
def device_cmyk(alpha, fallback, fallback_alpha) # :nodoc:
  params = [
    css_value(cyan, :percent),
    css_value(magenta, :percent),
    css_value(yellow, :percent),
    css_value(key, :percent)
  ].join(" ")
  params = "#{params} / #{css_value(alpha)}" if alpha
  fallback = fallback&.css(alpha: fallback_alpha)

# File lib/color/cmyk.rb, line 195
def to_yiq(...) = to_rgb(...).to_yiq(...)

##
# Converts CMYK to Color::RGB.
#
# Most color experts strongly suggest that this is not a good idea (some suggesting that
# it's a very bad idea). CMYK represents additive percentages of inks on white paper,
# whereas RGB represents mixed color intensities on an unlit (black) screen.
#
# The color conversion can be done and there are two different methods (standard and
# Adobe PDF) that provide slightly different results. Using CMYK [33% 66% 83% 25%], the
# standard method provides an approximate RGB color of (128, 65, 33) or #804121. The
# Adobe PDF method provides an approximate RGB color of (107, 23, 0) or #6b1700.
#
# Which is correct? The colors may seem to be drastically different in the RGB color
# space, they differ mostly in intensity. The Adobe PDF conversion is a darker, slightly
# redder brown; the standard conversion is a lighter brown. Because of this subtlety,
# both methods are offered for conversion. The Adobe PDF method is not used by default;
# to use it, pass `rgb_method: :adobe` to #to_rgb.
#
#   # Adobe PDF CMYK -> RGB Conversion
#   r = 1.0 - min(1.0, c + k)
#   g = 1.0 - min(1.0, m + k)
#   b = 1.0 - min(1.0, y + k)
#
#   # Standard CMYK -> RGB Conversion
#   r = 1.0 - (c * (1.0 - k) + k)
#   g = 1.0 - (m * (1.0 - k) + k)
#   b = 1.0 - (y * (1.0 - k) + k)
#
# :call-seq:
#   to_rgb(rgb_method: :standard)
def to_rgb(*args, **kwargs)
  values =
    if kwargs[:rgb_method] == :adobe || args.first == :adobe
      adobe_cmyk_rgb
    else
      standard_cmyk_rgb
    end

  Color::RGB.from_fraction(*values)
end

##
# Converts CMYK to Color::HSL via Color::RGB.
def to_hsl(...) = to_rgb(...).to_hsl(...)

##
# Converts CMYK to Color::CIELAB via Color::RGB.
def to_lab(...) = to_rgb(...).to_lab(...)

##
# Converts CMYK to Color::XYZ via Color::RGB.
def to_xyz(...) = to_rgb(...).to_xyz(...)

##
def inspect = "CMYK [%.2f%% %.2f%% %.2f%% %.2f%%]" % [cyan, magenta, yellow, key] # :nodoc:

##
def pretty_print(q) # :nodoc:
  q.text "CMYK"
  q.breakable
  q.group 2, "[", "]" do
    q.text ".2f%%" % cyan
    q.fill_breakable
    q.text ".2f%%" % magenta
    q.fill_breakable
    q.text ".2f%%" % yellow
    q.fill_breakable
    q.text ".2f%%" % key
    q.fill_breakable
  end
end

##
def cyan = c * 100.0 # :nodoc:

##
def magenta = m * 100.0 # :nodoc:

##
def yellow = y * 100.0 # :nodoc:

##
alias_method :b, :k # :nodoc:

##
def key = k * 100.0 # :nodoc:

##
alias_method :black, :key # :nodoc:

##
def to_a = [cyan, magenta, yellow, key] # :nodoc:

##
alias_method :deconstruct, :to_a # :nodoc:

##
def deconstruct_keys(_keys) = {c:, m:, y:, k:, cyan:, magenta:, yellow:, key:} # :nodoc:

##
def to_internal = [c, m, y, k] # :nodoc:

##
def components = 4 # :nodoc:

private

##
# Implements the Adobe PDF conversion of CMYK to RGB.
def adobe_cmyk_rgb = [c, m, y].map { 1.0 - [1.0, _1 + k].min } # :nodoc:

##
# Implements the standard conversion of CMYK to RGB.
def standard_cmyk_rgb = [c, m, y].map { 1.0 - (_1 * (1.0 - k) + k) } # :nodoc:

##
def device_cmyk(alpha, fallback, fallback_alpha) # :nodoc:
  params = [
    css_value(cyan, :percent),
    css_value(magenta, :percent),
    css_value(yellow, :percent),
    css_value(key, :percent)
  ].join(" ")
  params = "#{params} / #{css_value(alpha)}" if alpha
  fallback = fallback&.css