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Composing Images and Text with Python
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This is Day 3 of the #100DaysOfPython challenge.
This post will use the Pillow image library to add text and icons layers to an image programmatically.
fonts/OpenSans-Bold.ttf.Let's create the
hello-img-layers directory and install Pillow.# Make the `hello-img-layers` directory
$ mkdir hello-img-layers
$ cd hello-img-layers
# Create a folder to place your icons
$ mkdir icons
# Init the virtual environment
$ pipenv --three
$ pipenv install pillow
$ pipenv install --dev jupyterlabAt this stage, add your 1000x600 image to the root directory (
hello-img-layers) as base_img.png (at least that is what I am using) and add your 100x100 icons to hello-img-layers/icons/.Now we can start up the notebook server.
# Startup the notebook server
$ pipenv run jupyter-lab
# ... Server is now running on http://localhost:8888/labThe server will now be up and running.
Once on http://localhost:8888/lab, select to create a new Python 3 notebook from the launcher.
Ensure that this notebook is saved in
hello-img-layers/docs/<your-file-name>.We will create four cells to handle four parts of this mini project:
This section simply loads the image in var
base_img (assuming you are following the directory structure where the notebook is in the docs folder).from PIL import Image
# Concatenating an image
base_img = Image.open('../base_img.png')We create the destination layer here based on the base images width and height and paste that base image back in.
Then we make use of the glob library to fetch all the paths to our icons and paste them on top of the base image.
# Add in icons using a glob
import glob
from os.path import join, dirname, abspath
dst_img = Image.new('RGBA', (base_img.width, base_img.height))
dst_img.paste(base_img, (0, 0))
icons_dir = join(dirname(abspath("__file__")), '../icons')
icons = glob.glob(f"{icons_dir}/*")
for i, icon_path in enumerate(icons):
icon = Image.open(icon_path)
# @see https://stackoverflow.com/questions/5324647/how-to-merge-a-transparent-png-image-with-another-image-using-pil
dst_img.paste(icon, (60 + (i * icon.width) + (i * 20), base_img.height - 100 - icon.height), icon)This layer will load our
Open Sans font and draw that onto the image.The
max_text_width=25 that I selected here was through trial and error. There may be a more reusable way to handle this for different sized images.import os
# Add your own font in
font = ImageFont.truetype(os.path.join('fonts/OpenSans-Bold.ttf'), 58)
import textwrap
text = "Sample Text that is too long but let us write a bunch anyway"
print(dst_img.width)
max_text_width = 25
wrapped_text = textwrap.wrap(text, width=max_text_width)
# setup up a variable to invoke our text method
draw = ImageDraw.Draw(dst_img)
for i, line in enumerate(wrapped_text):
# draw.text((0, height - (i * 20)), line, (0, 0, 0), font=font)
draw.text((60, 100 + (i * 80)),line,(255,255,255),font=font)Finally, we will save and display our base image.
dst_img.save('../dest_img.png')
# Display the image inline
display(Image.open('../dest_img.png'))
Today's post demonstrated how to use the
Pillow package to add text and icons layers to an image programmatically.This will be the technique I use for helping to build out my blog post main images (including this one!).
Originally posted on my blog. To see new posts without delay, read the posts there and subscribe to my newsletter.
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