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module Vedeu
module Geometry
# The grid system splits the terminal height and width into 12
# equal parts, by dividing the available height and width by 12.
# If the terminal height or width is not a multiple of 12, then
# Grid chooses the maximum value which will fit.
#
class Grid
# @see #initialize
# @see #columns
def self.columns(value)
new(value).columns
end
# @see #initialize
# @see #rows
def self.rows(value)
new(value).rows
end
# Returns a new instance of Vedeu::Geometry::Grid.
#
# @param value [Fixnum]
# @return [Vedeu::Geometry::Grid]
def initialize(value)
@value = value
end
# @see Vedeu::Geometry::DSL#columns
def columns
fail Vedeu::Error::OutOfRange if out_of_range?
column * value
end
# @see Vedeu::Geometry::DSL#rows
def rows
fail Vedeu::Error::OutOfRange if out_of_range?
row * value
end
protected
# @!attribute [r] value
# @return [Fixnum]
attr_reader :value
private
# Returns the height of a single row in characters.
#
# @return [Fixnum]
def row
Vedeu.height / 12
end
# Returns a boolean indicating whether the value is out of
# range.
#
# @return [Boolean]
def out_of_range?
value < 1 || value > 12
end
# Returns the width of a single column in characters.
#
# @return [Fixnum]
def column
Vedeu.width / 12
end
end # Grid
end # Geometry
end # Vedeu
Version data entries
38 entries across 38 versions & 1 rubygems