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# frozen_string_literal: true
module Axlsx
# A GradientFill defines the color and positioning for gradiant cell fill.
# @see Open Office XML Part 1 §18.8.24
class GradientFill
include Axlsx::OptionsParser
include Axlsx::SerializedAttributes
# Creates a new GradientFill object
# @option options [Symbol] type
# @option options [Float] degree
# @option options [Float] left
# @option options [Float] right
# @option options [Float] top
# @option options [Float] bottom
def initialize(options = {})
options[:type] ||= :linear
parse_options options
@stop = SimpleTypedList.new GradientStop
end
serializable_attributes :type, :degree, :left, :right, :top, :bottom
# The type of gradient.
# @note
# valid options are
# :linear
# :path
# @return [Symbol]
attr_reader :type
# Angle of the linear gradient
# @return [Float]
attr_reader :degree
# Percentage format left
# @return [Float]
attr_reader :left
# Percentage format right
# @return [Float]
attr_reader :right
# Percentage format top
# @return [Float]
attr_reader :top
# Percentage format bottom
# @return [Float]
attr_reader :bottom
# Collection of stop objects
# @return [SimpleTypedList]
attr_reader :stop
# @see type
def type=(v) Axlsx::validate_gradient_type v; @type = v end
# @see degree
def degree=(v) Axlsx::validate_float v; @degree = v end
# @see left
def left=(v)
validate_format_percentage "GradientFill.left", v
@left = v
end
# @see right
def right=(v)
validate_format_percentage "GradientFill.right", v
@right = v
end
# @see top
def top=(v)
validate_format_percentage "GradientFill.top", v
@top = v
end
# @see bottom
def bottom=(v)
validate_format_percentage "GradientFill.bottom", v
@bottom = v
end
# validates that the value provided is between 0.0 and 1.0
def validate_format_percentage(name, value)
DataTypeValidator.validate name, Float, value, lambda { |arg| arg >= 0.0 && arg <= 1.0 }
end
# Serializes the object
# @param [String] str
# @return [String]
def to_xml_string(str = +'')
str << '<gradientFill '
serialized_attributes str
str << '>'
@stop.each { |s| s.to_xml_string(str) }
str << '</gradientFill>'
end
end
end
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