How can our code take a screenshot of a webpage, and save it to an image file ?
It turns out it’s easy. First, we need to
gem install win32screenshot
Then, write code something like this:
require ‘win32screenshot’
width, height, bmp = Win32::Screenshot.foreground
img = Magick::Image.from_blog(bmp)[0]
img.write(RAILS_ROOT + “/public/images/screenshot.png”)
Voila, and you get the screenshot!