class Doge

# File lib/doge.rb, line 8
def initialize(image_path = nil, &block)
  image_path ||= File.expand_path('doge/images/doge.jpg', File.dirname(__FILE__))
  @image = Magick::ImageList.new(image_path)
  @occupied = []
  instance_eval &block if block
end

# File lib/doge.rb, line 15
def wuff(term)
  text = image_text
  metrics = text.get_type_metrics(@image, term)
  horizontal_padding = @image.columns * 0.1
  horizontal_top = @image.columns - horizontal_padding - metrics.width
  height = metrics.height.round + 5 #padding
  @image.annotate(text, 0,0, Random.rand(horizontal_padding..horizontal_top), y_for_height(height), term)
  self
end

# File lib/doge.rb, line 34
def image_text
  text = Magick::Draw.new
  text.gravity = Magick::NorthWestGravity
  text.pointsize = 50
  text.font_family = "Comic Sans MS"
  text.font_weight = Magick::BoldWeight
  text.fill = random_rgb
  text
end

# File lib/doge.rb, line 30
def random_rgb
  "rgb(#{Random.rand(0..255)}, #{Random.rand(0..255)}, #{Random.rand(0..255)})"
end

# File lib/doge.rb, line 55
def row_occupied?(row, height)
  @occupied.each do |range|
    return true if range.include?(row)
    return true if range.include?(row + height)
  end
  false
end

# File lib/doge.rb, line 44
def y_for_height(height)
  vertical_padding = @image.rows * 0.1
  vertical_top = @image.rows - vertical_padding
  row = 0
  begin
    row = Random.rand(vertical_padding..vertical_top).round
  end while row_occupied?(row, height)
  @occupied << (row..(row + height))
  row
end