nx-watermark
Watermark use mini_magick.
installation
# from gem
gem 'nx-watermark'
# from git
gem 'nx-watermark', git: 'git@github.com:afeiship/nx-watermark.git'usage
Nx::Watermark.patch(
source: "https://img9.doubanio.com/view/ark_article_cover/retina/public/12051836.jpg?v=0",
watermark: "__tests__/watermark_20.png",
dest: "__tests__/dist.png",
)build/publish
# build
gem build nx-watermark.gemspec
# publish
gem push nx-watermark-0.1.0.gem