work on plugin

README

@@ -3,6 +3,41 @@ easyCaptcha
 
 Captcha for Rails
 
+Configuration
+=============
+You can write this in "config/initializers/easy_captcha.rb", if you want to customize the default configurtion
+
+EasyCaptcha.setup do |config|
+  # Font
+  # config.font_size = 24
+  # config.font_fill_color = '#222266'
+  # config.font_stroke_color = '#000000'
+  # config.font_stroke = 0
+  # config.font_family = File.expand_path('../../resources/afont.ttf', __FILE__)
+
+  # Image
+  #config.image_height = 40
+  #config.image_width = 140
+  #config.image_background_color = "#AAAAAA"
+
+  # Wave
+  # config.wave = true
+  # config.wave_length = (60..100)
+  # config.wave_amplitude = (3..5)
+
+  # Sketch
+  # config.sketch = true
+  # config.sketch_radius = 3
+  # config.sketch_sigma = 4
+
+  # Implode
+  # config.implode = 0.1
+
+  # Gaussian Blur
+  # config.blur = true
+  # config.blur_radius = 1
+  # config.blur_sigma = 2
+end
 
 Example
 =======

Rakefile

@@ -4,14 +4,15 @@ require 'rake'
 begin  
   require 'jeweler'  
   Jeweler::Tasks.new do |gemspec|  
-    gemspec.name = "easycaptcha"  
+    gemspec.name = "easy_captcha"  
     gemspec.summary = "Captcha for Rails"  
     gemspec.description = "A Captcha Implementation for Rails by RMagick"  
     gemspec.email = "[email protected]"  
     gemspec.homepage = "http://github.com/traxanos/easycaptcha"  
     gemspec.authors = ["Marco Scholl"]
     gemspec.add_development_dependency "rspec", ">= 1.2.9"
     gemspec.add_runtime_dependency "rails", ">= 3.0.0"
+    gemspec.add_runtime_dependency "rmagick"
   end  
   Jeweler::GemcutterTasks.new
 rescue LoadError  

init.rb

@@ -1,2 +1 @@
-require 'rails'
-require 'easycaptcha'
+require 'easy_captcha'

lib/easy_captcha.rb

@@ -0,0 +1,54 @@
+module EasyCaptcha
+  # Font
+  mattr_accessor :font_size, :font_fill_color, :font_family, :font_stroke, :font_stroke_color
+  @@font_size = 24
+  @@font_fill_color = '#222266'
+  @@font_family = File.expand_path('../../../resources/captcha.ttf', __FILE__)
+  @@font_stroke = '#000000'
+  @@font_stroke_color = 0
+  # Image
+  mattr_accessor :image_width, :image_height, :image_background_color
+  @@image_width = 140
+  @@image_height = 40
+  @@image_background_color = '#AAAAAA'
+  # Sketch
+  mattr_accessor :sketch, :sketch_radius, :sketch_sigma
+  @@sketch = true
+  @@sketch_radius = 3
+  @@sketch_sigma = 4
+  # Wave
+  mattr_accessor :wave, :wave_length, :wave_amplitude
+  @@wave = true
+  @@wave_length = (60..100)
+  @@wave_amplitude = (3..5)
+  # Implode
+  mattr_accessor :implode
+  @@implode = 0.1
+  # Gaussian Blur
+  mattr_accessor :blur, :blur_radius, :blur_sigma
+  @@blur = true
+  @@blur_radius = 1
+  @@blur_sigma = 2
+
+  class << self
+    # setup
+    def setup
+      yield self
+    end
+
+    def sketch?
+      sketch
+    end
+
+    def wave?
+      wave
+    end
+
+    def blur?
+      blur
+    end
+  end
+end
+
+require 'easy_captcha/captcha'
+

lib/easy_captcha/captcha.rb

@@ -0,0 +1,54 @@
+module EasyCaptcha
+  class Captcha
+    attr_reader :code, :image
+    def initialize(code)
+      @code = code
+      generate_captcha
+    end
+
+    def inspect
+      "<EasyCaptcha::Captcha @code=#{code}>"
+    end
+
+    private
+
+    def generate_captcha
+      canvas = Magick::Image.new(EasyCaptcha.image_width, EasyCaptcha.image_height) do |variable|
+        self.background_color = EasyCaptcha.image_background_color unless EasyCaptcha.image_background_color.nil?
+      end
+
+      # Render the text in the image
+      canvas.annotate(Magick::Draw.new, 0,0,0,0, code) {
+        self.gravity = Magick::CenterGravity
+        self.font_family = EasyCaptcha.font_family
+        self.font_weight = Magick::LighterWeight
+        self.fill = EasyCaptcha.font_fill_color
+        if EasyCaptcha.font_stroke.to_i > 0
+          self.stroke = EasyCaptcha.font_stroke_color
+          self.stroke_width = EasyCaptcha.font_stroke
+        end
+        self.pointsize = EasyCaptcha.font_size
+      }
+
+      # Blur
+      canvas = canvas.blur_image(EasyCaptcha.blur_radius, EasyCaptcha.blur_sigma) if EasyCaptcha.blur?
+
+      # Wave
+      w = EasyCaptcha.wave_length
+      a = EasyCaptcha.wave_amplitude
+      canvas = canvas.wave(rand(a.last - a.first) + a.first, rand(w.last - w.first) + w.first) if EasyCaptcha.wave?
+
+      # Sketch
+      canvas = canvas.sketch(EasyCaptcha.sketch_radius, EasyCaptcha.sketch_sigma, rand(180)) if EasyCaptcha.sketch?
+
+      # Implode
+      canvas = canvas.implode(EasyCaptcha.implode.to_f) if EasyCaptcha.implode.is_a? Float
+
+      # Crop image because to big after waveing
+      canvas = canvas.crop(Magick::CenterGravity, EasyCaptcha.image_width, EasyCaptcha.image_height)
+
+      @image = canvas.to_blob { self.format = 'PNG' }
+      canvas.destroy!
+    end
+  end
+end

lib/easy_captcha/config.rb

@@ -0,0 +1,20 @@
+module EasyCaptcha
+  class Config
+    @@image
+
+    @@config = {
+      :image => {
+        :width => 150,
+        :height => 30
+        :color => '#EEEEEE',
+      },
+      :font => {
+        :color => '#E20074',
+        :size => 20,
+        :ttf => File.expand_path('../../../resources/captcha.ttf', __FILE__)        
+      }
+    }
+
+    cattr_accessor :image_  
+  end
+end

test/easycaptcha_test.rb → test/easy_captcha_test.rb

@@ -1,6 +1,6 @@
 require 'test_helper'
 
-class EasycaptchaTest < ActiveSupport::TestCase
+class EasyCaptchaTest < ActiveSupport::TestCase
   # Replace this with your real tests.
   test "the truth" do
     assert true