screenshots - python, capturejs, phantomjs

screenshots-python-capturejs-phantomjs.py

"""
Install nodejs:

  http:http://nodejs.org

On Ubuntu 12.x, you may need to do this:

  sudo apt-get update
  sudo apt-get install -y python-software-properties
  sudo add-apt-repository -y ppa:chris-lea/node.js
  sudo apt-get update
  sudo apt-get install -y nodejs
  
  For running phantomjs:
  
  sudo apt-get install -y libfontconfig   # for phantomjs

  For 'make', for capturejs:
  
  sudo apt-get install -y build-essential 

Install phantomjs:

  sudo np install -g phantomjs

Install capturejs:

  sudo npm install -g capturejs
"""
import os
import tempfile
import subprocess

page_url = 'the url of the page you want to screenshot'
width = 800
height = 600

# Write screenshot to temp file
temp_dir = tempfile.gettempdir() 
temp_name =  repr(time.time())+'.png'      
temp_path = os.path.join(temp_dir, temp_name)
print 'Writing', temp_path

os.chdir(temp_dir)
subprocess.check_call([
  'capturejs', 
  '-V', '%dx%d' % (width, height),
  '-u', page_url,
  '-o', temp_name,
  '-R', '1000' # delay to allow page to render
])

# Check for silent error
if not os.path.isfile(temp_path):
  raise Exception('Error creating screenshot')