Adding a Watermark

Overlay faint diagonal text across the grid.

Use add_watermark() after adding a title.

from datetime import date

from lifegraph import Lifegraph
from lifegraph.configuration import Papersize

birthday = date(1990, 11, 1)
g = Lifegraph(birthday, dpi=300, size=Papersize.A4)
g.add_title("Time is Not Equal to Money")
g.add_watermark("Your Life")
g.save("grid_with_watermark.png")