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Contents
module Vedeu
# Provides the mechanisms to clear an interface or group of interfaces.
#
module Clear
# Clear the named interface.
#
class NamedInterface
class << self
# @return [Array<Array<Vedeu::Views::Char>>]
# @see #initialize
def render(name)
new(name).render
end
alias_method :clear_by_name, :render
alias_method :by_name, :render
end # Eigenclass
# Return a new instance of Vedeu::Clear::NamedInterface.
#
# @param name [String] The name of the interface to clear.
# @return [Vedeu::Clear::NamedInterface]
def initialize(name)
@name = name
end
# @return [Array<Array<Vedeu::Views::Char>>]
def render
output
end
protected
# @!attribute [r] name
# @return [String]
attr_reader :name
private
# @see Vedeu::Geometries#by_name
def geometry
@geometry ||= Vedeu.geometries.by_name(name)
end
# @see Vedeu::Interfaces#by_name
def interface
@interface ||= Vedeu.interfaces.by_name(name)
end
# For each visible line of the interface, set the foreground and
# background colours to those specified when the interface was defined,
# then starting write space characters over the area which the interface
# occupies.
#
# @return [Array<Array<Vedeu::Views::Char>>]
def output
Vedeu.timer("Clearing: '#{name}'") do
@y = geometry.y
@x = geometry.x
@width = geometry.width
@height = geometry.height
@colour = interface.colour
@clear ||= Array.new(@height) do |iy|
Array.new(@width) do |ix|
Vedeu::Views::Char.new(value: ' ',
colour: @colour,
position: [@y + iy, @x + ix])
end
end
end
end
end # NamedInterface
end # Clear
end # Vedeu
Version data entries
6 entries across 6 versions & 1 rubygems