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)
def test_text_direction_rtl(self):
ttf = ImageFont.truetype(FONT_PATH, FONT_SIZE)
im = Image.new(mode='RGB', size=(300, 100))
draw = ImageDraw.Draw(im)
draw.text((0, 0), 'English عربي', font=ttf, fill=500, direction='rtl')
target = 'Tests/images/test_direction_rtl.png'
target_img = Image.open(target)
self.assert_image_similar(im, target_img, .5)
def test_complex_unicode_text(self):
ttf = ImageFont.truetype(FONT_PATH, FONT_SIZE)
im = Image.new(mode='RGB', size=(300, 100))
draw = ImageDraw.Draw(im)
draw.text((0, 0), 'السلام عليكم', font=ttf, fill=500)
target = 'Tests/images/test_complex_unicode_text.png'
target_img = Image.open(target)
self.assert_image_similar(im, target_img, .5)
def test_kerning_features(self):
ttf = ImageFont.truetype(FONT_PATH, FONT_SIZE)
im = Image.new(mode='RGB', size=(300, 100))
draw = ImageDraw.Draw(im)
draw.text((0, 0), 'TeToAV', font=ttf, fill=500, features=['-kern'])
target = 'Tests/images/test_kerning_features.png'
target_img = Image.open(target)
self.assert_image_similar(im, target_img, .5)
def test_y_offset(self):
ttf = ImageFont.truetype("Tests/fonts/NotoNastaliqUrdu-Regular.ttf",
FONT_SIZE)
im = Image.new(mode='RGB', size=(300, 100))
draw = ImageDraw.Draw(im)
draw.text((0, 0), 'العالم العربي', font=ttf, fill=500)
target = 'Tests/images/test_y_offset.png'
target_img = Image.open(target)
self.assert_image_similar(im, target_img, 1.7)
def _render(self, font):
txt = "Hello World!"
ttf = ImageFont.truetype(font,
FONT_SIZE,
layout_engine=self.LAYOUT_ENGINE)
ttf.getsize(txt)
img = Image.new("RGB", (256, 64), "white")
d = ImageDraw.Draw(img)
d.text((10, 10), txt, font=ttf, fill='black')
return img
def test_ligature_features(self):
ttf = ImageFont.truetype(FONT_PATH, FONT_SIZE)
im = Image.new(mode='RGB', size=(300, 100))
draw = ImageDraw.Draw(im)
draw.text((0, 0), 'filling', font=ttf, fill=500, features=['-liga'])
target = 'Tests/images/test_ligature_features.png'
target_img = Image.open(target)
self.assert_image_similar(im, target_img, .5)
liga_size = ttf.getsize('fi', features=['-liga'])
self.assertEqual(liga_size, (13, 19))
def test_arabictext_features(self):
ttf = ImageFont.truetype(FONT_PATH, FONT_SIZE)
im = Image.new(mode='RGB', size=(300, 100))
draw = ImageDraw.Draw(im)
draw.text((0, 0),
'اللغة العربية',
font=ttf,
fill=500,
features=['-fina', '-init', '-medi'])
target = 'Tests/images/test_arabictext_features.png'
target_img = Image.open(target)
self.assert_image_similar(im, target_img, .5)
def _test_fake_loading_font(self, path_to_fake, fontname):
# Make a copy of FreeTypeFont so we can patch the original
free_type_font = copy.deepcopy(ImageFont.FreeTypeFont)
with SimplePatcher(ImageFont, '_FreeTypeFont', free_type_font):
def loadable_font(filepath, size, index, encoding, *args,
**kwargs):
if filepath == path_to_fake:
return ImageFont._FreeTypeFont(FONT_PATH, size, index,
encoding, *args, **kwargs)
return ImageFont._FreeTypeFont(filepath, size, index, encoding,
*args, **kwargs)
with SimplePatcher(ImageFont, 'FreeTypeFont', loadable_font):
font = ImageFont.truetype(fontname)
# Make sure it's loaded
name = font.getname()
self.assertEqual(('FreeMono', 'Regular'), name)
def test_english(self):
# smoke test, this should not fail
ttf = ImageFont.truetype(FONT_PATH, FONT_SIZE)
im = Image.new(mode='RGB', size=(300, 100))
draw = ImageDraw.Draw(im)
draw.text((0, 0), 'TEST', font=ttf, fill=500, direction='ltr')
def test_leak(self):
ttype = ImageFont.truetype('Tests/fonts/FreeMono.ttf', 20)
self._test_font(ttype)
def get_font(self):
return ImageFont.truetype(FONT_PATH,
FONT_SIZE,
layout_engine=self.LAYOUT_ENGINE)
def test_font_with_filelike(self):
ImageFont.truetype(self._font_as_bytes(),
FONT_SIZE,
layout_engine=self.LAYOUT_ENGINE)
self._render(self._font_as_bytes())