Pillow/Tests/test_imagefont_bitmap.py
2015-12-31 07:27:27 +11:00

39 lines
1.5 KiB
Python

from helper import unittest, PillowTestCase
from PIL import Image, ImageFont, ImageDraw
image_font_installed = True
try:
ImageFont.core.getfont
except ImportError:
image_font_installed = False
@unittest.skipIf(not 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)
self.assert_image_similar(im_bitmap, im_outline, 20)
if __name__ == '__main__':
unittest.main()