new functionality for LibraryProxy

Author: monkstone

processing_app/library/library_proxy/key_event.rb

@@ -0,0 +1,29 @@
+# A simple demonstration of vanilla processing 'reflection' methods using
+# JRubyArt :library_proxy. 
+# See library/my_library/my_library.rb code for the guts.
+load_libraries :library_proxy, :my_library
+
+attr_reader :visible
+
+def settings
+  size 300, 200
+  @visible = false
+end
+
+def setup
+  sketch_title 'KeyEvent Demo'
+  MyLibrary.new self
+end
+
+def hide(val)
+  @visible = !val
+end
+
+def draw
+  if visible
+    fill(0, 0, 200)
+    ellipse(170, 115, 70, 100)
+  else
+    background 0
+  end
+end

processing_app/library/library_proxy/library/my_library/my_library.rb

@@ -0,0 +1,32 @@
+# This class demonstrates how by inheriting from the abstract class CustomProxy
+# we can access 'keyEvent' and 'draw'  (Note we need a draw method even
+# though can be empty)
+class MyLibrary < LibraryProxy
+  java_import 'processing.event.KeyEvent'
+
+  attr_reader :app
+
+  def initialize(parent)
+    @app = parent
+  end
+
+  def draw # optional
+    fill app.color(200, 0, 0, 100)
+    app.rect 100, 100, 60, 90
+  end
+
+  # favor guard clause no_op unless key pressed
+  # and no_op unless ascii key
+  def keyEvent(e) # NB: need camel case for reflection to work
+    return unless e.get_action == KeyEvent::PRESS
+    return if e.get_key > 122 # else we can't use :chr
+    case e.get_key.chr.upcase
+    when 'S'
+      app.send :hide, false
+    when 'H'
+      app.send :hide, true
+    else
+      puts e.get_key.chr
+    end
+  end
+end

processing_app/library/library_proxy/proxy_library.rb

@@ -1,16 +1,16 @@
 # proxy_library.rb
 # LibraryProxy is an AbstractJava class to give us access to the java
-# reflection methods 'pre', 'post' and 'draw' (which we should implement)
+# reflection methods 'pre', 'post' and 'draw' (latter we should implement)
+# also mouseEvent(e) and keyEvent(e) NB: need camel-case for reflection
 # width, height, fill, stroke, background are available, otherwise use app.
 class TestProxy < LibraryProxy # subclass LibraryProxy
-  def mousePressed(event); end # empty method is OK
-  def keyPressed(event); end # empty method is OK
-  def pre; end # empty method is OK
-
+  # draw is abstract, empty method would be OK
   def draw
     fill 200
     app.ellipse(width / 2, height / 2, 20, 20)
   end
 
-  def post; end # empty method is OK
+  # def mouseEvent(e)
+  #   use e in block to access MouseEvent
+  # end  
 end