Module: Processing::Proxy

Includes:
Math
Defined in:
lib/ruby-processing/app.rb

Overview

This module will get automatically mixed in to any inner class of a Processing::App, in order to mimic Java’s inner classes, which have unfettered access to the methods defined in the surrounding class.

Class Method Summary collapse

Class Method Details

.desired_method_names(inner_class) ⇒ Object

Generate a list of method names to proxy for inner classes. Nothing camelCased, nothing __internal__, just the Processing API.



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# File 'lib/ruby-processing/app.rb', line 206

def self.desired_method_names(inner_class)
  bad_method = /__/    # Internal JRuby methods.
  unwanted = PApplet.superclass.instance_methods + Object.instance_methods
  unwanted -= %w(width height cursor create_image background size resize)
  methods = Processing::App.public_instance_methods
  methods.reject do |m|
    unwanted.include?(m) ||
    bad_method.match(m) ||
    inner_class.method_defined?(m)
  end
end

.included(inner_class) ⇒ Object

Don’t do all of the work unless we have an inner class that needs it.



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# File 'lib/ruby-processing/app.rb', line 243

def self.included(inner_class)
  proxy_methods(inner_class)
  proxy_constants(inner_class)
end

.proxy_constants(inner_class) ⇒ Object

Proxy the sketch’s constants on to the inner classes.



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# File 'lib/ruby-processing/app.rb', line 235

def self.proxy_constants(inner_class)
  Processing::App.constants.each do |name|
    next if inner_class.const_defined?(name)
    inner_class.const_set(name, Processing::App.const_get(name))
  end
end

.proxy_methods(inner_class) ⇒ Object

Proxy methods through to the sketch.



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# File 'lib/ruby-processing/app.rb', line 219

def self.proxy_methods(inner_class)
  code = desired_method_names(inner_class).reduce('') do |rcode, method|
    rcode << "    def \#{method}(*args, &block)           # def rect(*args, &block)\n    if block_given?                        #   if block_given?\n    $app.send :'\#{method}', *args, &block  #   ...\n    else                                   #   else\n    $app.\#{method} *args                   #     $app.rect *args\n    end                                    #   end\n    end                                    # end\n    EOS\n  end\n  inner_class.class_eval(code)\nend\n"