foto_uploader.rb

# encoding: utf-8

class FotoUploader < CarrierWave::Uploader::Base

  # Include RMagick or ImageScience support:
  include CarrierWave::RMagick
  # include CarrierWave::ImageScience

  # Choose what kind of storage to use for this uploader:
  storage :file
  # storage :s3
  
  process :watermarking => [680, 460]
  
  version :grande do
    process :watermarking => [296, 200]
  end

  version :completa do
    process :watermarking => [680, 460]
  end

  version :busca do
    process :resize_to_fill => [100, 100]
  end

  version :thumb do
    process :resize_to_fill => [50, 50]
  end

  def watermarking(width, height)
    manipulate! do |img|
      logo = Magick::Image.read(Rails.root + 'public/images/marca_dagua.png').first
      img = img.composite(logo, Magick::SouthEastGravity, Magick::OverCompositeOp)
      img = img.resize_to_fill(width, height)
    end
  end

  # Override the directory where uploaded files will be stored.
  # This is a sensible default for uploaders that are meant to be mounted:
  def store_dir
    "uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
  end

  # Provide a default URL as a default if the') hasn't been a file uploaded:
  # def default_url
  #   "/images/fallback/" + [version_name, "default.png"].compact.join('_')
  # end

  # Process files as they are uploaded:
  # process :scale => [200, 300]
  #
  # def scale(width, height)
  #   # do something
  # end

  # Create different versions of your uploaded files:
  # version :thumb do
  #   process :scale => [50, 50]
  # end

  # Add a white list of extensions which are allowed to be uploaded.
  # For images you might use something like this:
  # def extension_white_list
  #   %w(jpg jpeg gif png)
  # end

  # Override the filename of the uploaded files:
  # def filename
  #   "something.jpg" if original_filename
  # end

end