Sha256: f0c30e59a46e28c9210fea36900fac100aa434697bb067c29c3c2da1d53e0c60
Contents?: true
Size: 1.09 KB
Versions: 9
Compression:
Stored size: 1.09 KB
Contents
# coding: utf-8
require 'RMagick'
module RailsCaptcha
class Image
include Magick
attr_reader :code, :data
def initialize(o)
generate_code o
canvas = Magick::Image.new(o[:dimensions][:width], o[:dimensions][:height]) {
self.background_color = o[:colors][:background]
}
text = Magick::Draw.new
text.font = File.expand_path o[:ttf]
text.pointsize = o[:letters][:points]
cur = 0
@code.each { |c|
text.annotate(canvas, 0, 0, cur, o[:letters][:baseline], c) {
self.fill = o[:colors][:font]
}
cur += o[:letters][:width]
}
w = o[:wave][:wavelength]
canvas = canvas.wave(o[:wave][:amplitude], rand(w.last - w.first) + w.first)
canvas = canvas.implode(o[:implode])
@code = @code.to_s
@data = canvas.to_blob { self.format = "JPG" }
canvas.destroy!
end
private
def generate_code(o)
chars = ('a'..'z').to_a - o[:letters][:ignore]
@code = []
1.upto(o[:letters][:count]) do
@code << chars[rand(chars.length)]
end
end
end
end
Version data entries
9 entries across 9 versions & 1 rubygems