feature suggestion: dynamic props

[JosephBARBIERDARNAL]

Hi Tomi ! I've come from the Python graph gallery that you probably know (: I'm in the process of adding some flexitext examples to the gallery. And while testing things out, I came up with the idea of making it simpler to create this type of annotation (see below). I quickly created a simple function to illustrate it.

Is this something you'd be interested in adding to your library? If so, I'm ready to do the PR and discuss how to implement it in practice so that it's robust and still compatible with other flexitext features.

import matplotlib.pyplot as plt
from flexitext import flexitext

def dynamic_text_prop(string, prop_name, initial_value, increment=2, prop_to_add=None):
    text = ""
    value = initial_value
    for letter in string:
        if letter != " ":
            if prop_to_add is not None:
                text += f"<{prop_name}:{value}, {prop_to_add}>{letter}</>"
            else:
                text += f"<{prop_name}:{value}>{letter}</>"
            value += increment
        else:
            text += " "
    return text

# Init a figure
fig, ax = plt.subplots(figsize=(8, 8), dpi=200)

text = "this text has a weird size!"
text = dynamic_text_prop(text, prop_name='size', initial_value=10)
flexitext(x=0.05, y=0.6, s=text)

text = "this text has a weird opacity!"
text = dynamic_text_prop(text, prop_name='alpha',
                         initial_value=0.1, increment=0.03, prop_to_add='size:20')
flexitext(x=0.05, y=0.3, s=text)

# Display the output
plt.show()

Note: this would also be interesting with colours, which would be highly compatible with pypalettes, a library I created to facilitate access to colour maps in python.

[tomicapretto]

This is fantastic! I would love to have it. Feel free to open a PR. I'll review it and if possible i'll try to contribute with ideas. Thanks!

[JosephBARBIERDARNAL]

cool! I'll try to open a draft soon