Pillow/Tests/test_imagefont_bitmap.py

46 lines
1.5 KiB
Python

import unittest
from PIL import Image, ImageDraw, ImageFont
from .helper import PillowTestCase, assert_image_similar
image_font_installed = True
try:
ImageFont.core.getfont
except ImportError:
image_font_installed = False
@unittest.skipUnless(image_font_installed, "image font not installed")
class TestImageFontBitmap(PillowTestCase):
def test_similar(self):
text = "EmbeddedBitmap"
font_outline = ImageFont.truetype(font="Tests/fonts/DejaVuSans.ttf", size=24)
font_bitmap = ImageFont.truetype(
font="Tests/fonts/DejaVuSans-bitmap.ttf", size=24
)
size_outline = font_outline.getsize(text)
size_bitmap = font_bitmap.getsize(text)
size_final = (
max(size_outline[0], size_bitmap[0]),
max(size_outline[1], size_bitmap[1]),
)
im_bitmap = Image.new("RGB", size_final, (255, 255, 255))
im_outline = im_bitmap.copy()
draw_bitmap = ImageDraw.Draw(im_bitmap)
draw_outline = ImageDraw.Draw(im_outline)
# Metrics are different on the bitmap and ttf fonts,
# more so on some platforms and versions of freetype than others.
# Mac has a 1px difference, linux doesn't.
draw_bitmap.text(
(0, size_final[1] - size_bitmap[1]), text, fill=(0, 0, 0), font=font_bitmap
)
draw_outline.text(
(0, size_final[1] - size_outline[1]),
text,
fill=(0, 0, 0),
font=font_outline,
)
assert_image_similar(im_bitmap, im_outline, 20)