pillow で テキストを画像に変換

Arch Linux で必要なライブラリーをインストール

sudo pacman -S python-reportlab
yay otf-takao

プログラム

text_to_png.py

#! /usr/bin/python
#
#	text_to_png.py
#
#					Mar/24/2023
#
# ------------------------------------------------------------------
import sys
from PIL import Image, ImageDraw, ImageFont
from reportlab.pdfbase.cidfonts import UnicodeCIDFont
# ------------------------------------------------------------------
def text_to_png_proc(lines_in,png_out):
	height = 16
#	width = 1200
	width = 100
#
	lines_out = limit_length_proc(lines_in)
	llx = len(lines_out)
	sys.stderr.write("llx = %d\n" % llx)
	yy_height = height * llx + 50
	sys.stderr.write("yy_height = %d\n" % yy_height)
	text_canvas = Image.new('RGB', (width, yy_height), (255, 255, 255))
	draw = ImageDraw.Draw(text_canvas)
#
	font_ttf = "/usr/share/fonts/OTF/TakaoPMincho.ttf"
	draw.font = ImageFont.truetype(font_ttf, height)
#	
	font_ttf = "/usr/share/fonts/OTF/TakaoPMincho.ttf"
	draw.font = ImageFont.truetype(font_ttf, height)
#
	xx = 20
	yy = 20
	color = (0,0,0)
	for line in lines_out:
		pos = (xx,yy)
		draw.text(pos, line, color)
		yy += height
#
#	text_canvas.show()
	text_canvas.save(png_out)
# ------------------------------------------------------------------
def limit_length_proc(lines_in):
	lines_out = []
	for line in lines_in:
		if len(line) <= 80:
			lines_out.append(line)
		elif len(line) <= 160:
			lines_out.append(line[:80])
			lines_out.append(line[80:])
		else:
			lines_out.append(line[:80])
			lines_out.append(line[80:160])
			lines_out.append(line[160:])
#
	return lines_out
# ------------------------------------------------------------------

使用方法

./text_to_png.py in01.txt out01.png

in01.txt

AAA

out01.png

確認したバージョン

$ python --version
Python 3.10.10