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 ⇒ Object

Generate the list of method names that we’d like to proxy for inner classes. Nothing camelCased, nothing __internal__, just the Processing API.



258
259
260
261
262
263
264
 
# File 'lib/ruby-processing/app.rb', line 258

def self.desired_method_names
  bad_method = /__/    # Internal JRuby methods.
  unwanted = PApplet.superclass.instance_methods + Object.instance_methods
  unwanted -= ['width', 'height', 'cursor', 'create_image', 'background', 'size', 'resize']
  methods = Processing::App.public_instance_methods
  methods.reject {|m| unwanted.include?(m) || bad_method.match(m) }
end

.included(inner_class) ⇒ Object

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



293
294
295
296
297
298
 
# File 'lib/ruby-processing/app.rb', line 293

def self.included(inner_class)
  return if @already_defined
  proxy_methods
  proxy_constants
  @already_defined = true
end

.proxy_constants ⇒ Object

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



285
286
287
288
289
 
# File 'lib/ruby-processing/app.rb', line 285

def self.proxy_constants
  Processing::App.constants.each do |name|
    Processing::Proxy.const_set(name, Processing::App.const_get(name))
  end
end

.proxy_methods ⇒ Object

Proxy methods through to the sketch.



268
269
270
271
272
273
274
275
276
277
278
279
280
281
 
# File 'lib/ruby-processing/app.rb', line 268

def self.proxy_methods
  code = desired_method_names.inject('') do |code, method|
    code << "      def \#{method}(*args, &block)                # def rect(*args, &block)\n        if block_given?                           #   if block_given?\n          $app.send :'\#{method}', *args, &block   #     $app.send(:rect, *args, &block)\n        else                                      #   else\n          $app.\#{method} *args                    #     $app.rect *args\n        end                                       #   end\n      end                                         # end\n    EOS\n  end\n  module_eval(code, \"Processing::Proxy\", 1)\nend\n"