Created
April 23, 2014 16:18
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How do i automate creating these posts images
as a software engineer i get lots of projects to finish and posting new scripts everyday should get less time, so i had to automate more and more parts of this process.
i notice that creating post image with illustrative comments is taking about 5/10 minutes to finish, so i had to automate this part.…
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#!/usr/bin/env ruby | |
# Author : Emad Elsaid (https://github.com/blazeeboy) | |
require 'cairo' # gem install cairo | |
IMAGE_PATH = '/path/to/image/file.png' | |
# open image as Cairo surface | |
image = Cairo::ImageSurface.from_png(IMAGE_PATH) | |
# this is out target surface we will paint on it | |
# and save it at the end, we created it a perfect Square | |
target = Cairo::ImageSurface.new(Cairo::FORMAT_ARGB32, image.width, image_width) | |
# context is what enable us to paint | |
# a wrapper of any surface and used to | |
# define what we'll paint and where (the source and mask) | |
cr = Cairo::Context.new(target) | |
# to crop `image` we'll | |
# put it as source, then | |
# draw a mask on the target | |
# then fill the space with this image | |
cr.set_source image | |
cr.rectangle 0, 0, image.width, image_width | |
cr.fill | |
# draw a white semi-transparent | |
# rectangle on it that we will | |
# write the post title on it. | |
cr.set_source_rgba 1, 1, 1, 0.8 # white with 80% alpha | |
cr.rectangle 0, image_width - 80, image.width, 80 | |
cr.fill | |
# write title using Futura font in 30 pixels | |
cr.set_source_rgb 207.0/255, 35.0/255, 64.0/255 | |
cr.select_font_face "Futura", | |
Cairo::FONT_SLANT_NORMAL, | |
Cairo::FONT_WEIGHT_BOLD | |
cr.move_to 25, image_width - 40 | |
cr.set_font_size 30 | |
cr.show_text title | |
cr.fill | |
# write a small text under the title to tell | |
# user that we cropped the original image | |
cr.set_source_rgb 131.0/255, 17.0/255, 45.0/255 | |
cr.select_font_face "Verdana", | |
Cairo::FONT_SLANT_NORMAL, | |
Cairo::FONT_SLANT_NORMAL | |
cr.move_to 25, image_width - 15 | |
cr.set_font_size 14 | |
cr.show_text "As this script is too long, check the rest of it from the link in description" | |
cr.fill | |
# then save the target surface to disk :) | |
cr.target.write_to_png IMAGE_PATH |
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