module Goo::PropsInit - goocanvas-1.2.6 Documentation

# module Goo::PropsInit

### Public Class Methods

append_features(klass) click to toggle source
Calls superclass method

    # File lib/goocanvas.rb, line 34
    def self.append_features(klass)
      super
      arity = klass.instance_method(:initialize).arity
      raise 'the initialize method of a class including PropsInit must have a fixed arity' if arity < 0
      args_list = (1..arity).collect { |i| "param#{i}" }.join(", ")
      klass.module_eval <<-END
        alias :_initialize :initialize
        def initialize(#{args_list}, *args)
          _initialize(#{args_list})
          init_props(*args)
        end

        alias :_set_property :set_property
        def set_property(prop_name, value)
          pspec = self.class.property(prop_name)
          value = value.to_goo if pspec.value_type.name =~ /^GooCairo/ and value.respond_to?(:to_goo)
          _set_property(prop_name, value)
        end
      END
    end

### Public Instance Methods

init_props(*args) click to toggle source

    # File lib/goocanvas.rb, line 29
    def init_props(*args)
      hash = Goo.args_to_hash(args)
      hash.each_pair { |key, value| set_property(key.to_s.gsub(/-/, '_').to_sym, value) }
    end