1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001
|
import copy
import os
import re
import shutil
import sys
from io import BytesIO
import pytest
from packaging.version import parse as parse_version
from PIL import Image, ImageDraw, ImageFont, features
from .helper import (
assert_image_equal,
assert_image_equal_tofile,
assert_image_similar,
assert_image_similar_tofile,
is_win32,
skip_unless_feature,
skip_unless_feature_version,
)
FONT_PATH = "Tests/fonts/FreeMono.ttf"
FONT_SIZE = 20
TEST_TEXT = "hey you\nyou are awesome\nthis looks awkward"
pytestmark = skip_unless_feature("freetype2")
class TestImageFont:
LAYOUT_ENGINE = ImageFont.LAYOUT_BASIC
def get_font(self):
return ImageFont.truetype(
FONT_PATH, FONT_SIZE, layout_engine=self.LAYOUT_ENGINE
)
def test_sanity(self):
assert re.search(r"\d+\.\d+\.\d+$", features.version_module("freetype2"))
def test_font_properties(self):
ttf = self.get_font()
assert ttf.path == FONT_PATH
assert ttf.size == FONT_SIZE
ttf_copy = ttf.font_variant()
assert ttf_copy.path == FONT_PATH
assert ttf_copy.size == FONT_SIZE
ttf_copy = ttf.font_variant(size=FONT_SIZE + 1)
assert ttf_copy.size == FONT_SIZE + 1
second_font_path = "Tests/fonts/DejaVuSans.ttf"
ttf_copy = ttf.font_variant(font=second_font_path)
assert ttf_copy.path == second_font_path
def test_font_with_name(self):
self.get_font()
self._render(FONT_PATH)
def _font_as_bytes(self):
with open(FONT_PATH, "rb") as f:
font_bytes = BytesIO(f.read())
return font_bytes
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())
# Usage note: making two fonts from the same buffer fails.
# shared_bytes = self._font_as_bytes()
# self._render(shared_bytes)
# with pytest.raises(Exception):
# _render(shared_bytes)
def test_font_with_open_file(self):
with open(FONT_PATH, "rb") as f:
self._render(f)
def test_non_ascii_path(self, tmp_path):
tempfile = str(tmp_path / ("temp_" + chr(128) + ".ttf"))
try:
shutil.copy(FONT_PATH, tempfile)
except UnicodeEncodeError:
pytest.skip("Non-ASCII path could not be created")
ImageFont.truetype(tempfile, FONT_SIZE)
def test_unavailable_layout_engine(self):
have_raqm = ImageFont.core.HAVE_RAQM
ImageFont.core.HAVE_RAQM = False
try:
ttf = ImageFont.truetype(
FONT_PATH, FONT_SIZE, layout_engine=ImageFont.LAYOUT_RAQM
)
finally:
ImageFont.core.HAVE_RAQM = have_raqm
assert ttf.layout_engine == ImageFont.LAYOUT_BASIC
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_render_equal(self):
img_path = self._render(FONT_PATH)
with open(FONT_PATH, "rb") as f:
font_filelike = BytesIO(f.read())
img_filelike = self._render(font_filelike)
assert_image_equal(img_path, img_filelike)
def test_transparent_background(self):
im = Image.new(mode="RGBA", size=(300, 100))
draw = ImageDraw.Draw(im)
ttf = self.get_font()
txt = "Hello World!"
draw.text((10, 10), txt, font=ttf)
target = "Tests/images/transparent_background_text.png"
with Image.open(target) as target_img:
assert_image_similar(im, target_img, 4.09)
def test_textsize_equal(self):
im = Image.new(mode="RGB", size=(300, 100))
draw = ImageDraw.Draw(im)
ttf = self.get_font()
txt = "Hello World!"
size = draw.textsize(txt, ttf)
draw.text((10, 10), txt, font=ttf)
draw.rectangle((10, 10, 10 + size[0], 10 + size[1]))
target = "Tests/images/rectangle_surrounding_text.png"
with Image.open(target) as target_img:
# Epsilon ~.5 fails with FreeType 2.7
assert_image_similar(im, target_img, 2.5)
@pytest.mark.parametrize(
"text, mode, font, size, length_basic, length_raqm",
(
# basic test
("text", "L", "FreeMono.ttf", 15, 36, 36),
("text", "1", "FreeMono.ttf", 15, 36, 36),
# issue 4177
("rrr", "L", "DejaVuSans.ttf", 18, 21, 22.21875),
("rrr", "1", "DejaVuSans.ttf", 18, 24, 22.21875),
# test 'l' not including extra margin
# using exact value 2047 / 64 for raqm, checked with debugger
("ill", "L", "OpenSansCondensed-LightItalic.ttf", 63, 33, 31.984375),
("ill", "1", "OpenSansCondensed-LightItalic.ttf", 63, 33, 31.984375),
),
)
def test_getlength(self, text, mode, font, size, length_basic, length_raqm):
f = ImageFont.truetype(
"Tests/fonts/" + font, size, layout_engine=self.LAYOUT_ENGINE
)
im = Image.new(mode, (1, 1), 0)
d = ImageDraw.Draw(im)
if self.LAYOUT_ENGINE == ImageFont.LAYOUT_BASIC:
length = d.textlength(text, f)
assert length == length_basic
else:
# disable kerning, kerning metrics changed
length = d.textlength(text, f, features=["-kern"])
assert length == length_raqm
def test_render_multiline(self):
im = Image.new(mode="RGB", size=(300, 100))
draw = ImageDraw.Draw(im)
ttf = self.get_font()
line_spacing = draw.textsize("A", font=ttf)[1] + 4
lines = TEST_TEXT.split("\n")
y = 0
for line in lines:
draw.text((0, y), line, font=ttf)
y += line_spacing
target = "Tests/images/multiline_text.png"
with Image.open(target) as target_img:
# some versions of freetype have different horizontal spacing.
# setting a tight epsilon, I'm showing the original test failure
# at epsilon = ~38.
assert_image_similar(im, target_img, 6.2)
def test_render_multiline_text(self):
ttf = self.get_font()
# Test that text() correctly connects to multiline_text()
# and that align defaults to left
im = Image.new(mode="RGB", size=(300, 100))
draw = ImageDraw.Draw(im)
draw.text((0, 0), TEST_TEXT, font=ttf)
target = "Tests/images/multiline_text.png"
with Image.open(target) as target_img:
# Epsilon ~.5 fails with FreeType 2.7
assert_image_similar(im, target_img, 6.2)
# Test that text() can pass on additional arguments
# to multiline_text()
draw.text(
(0, 0), TEST_TEXT, fill=None, font=ttf, anchor=None, spacing=4, align="left"
)
draw.text((0, 0), TEST_TEXT, None, ttf, None, 4, "left")
# Test align center and right
for align, ext in {"center": "_center", "right": "_right"}.items():
im = Image.new(mode="RGB", size=(300, 100))
draw = ImageDraw.Draw(im)
draw.multiline_text((0, 0), TEST_TEXT, font=ttf, align=align)
target = "Tests/images/multiline_text" + ext + ".png"
with Image.open(target) as target_img:
# Epsilon ~.5 fails with FreeType 2.7
assert_image_similar(im, target_img, 6.2)
def test_unknown_align(self):
im = Image.new(mode="RGB", size=(300, 100))
draw = ImageDraw.Draw(im)
ttf = self.get_font()
# Act/Assert
with pytest.raises(ValueError):
draw.multiline_text((0, 0), TEST_TEXT, font=ttf, align="unknown")
def test_draw_align(self):
im = Image.new("RGB", (300, 100), "white")
draw = ImageDraw.Draw(im)
ttf = self.get_font()
line = "some text"
draw.text((100, 40), line, (0, 0, 0), font=ttf, align="left")
def test_multiline_size(self):
ttf = self.get_font()
im = Image.new(mode="RGB", size=(300, 100))
draw = ImageDraw.Draw(im)
# Test that textsize() correctly connects to multiline_textsize()
assert draw.textsize(TEST_TEXT, font=ttf) == draw.multiline_textsize(
TEST_TEXT, font=ttf
)
# Test that multiline_textsize corresponds to ImageFont.textsize()
# for single line text
assert ttf.getsize("A") == draw.multiline_textsize("A", font=ttf)
# Test that textsize() can pass on additional arguments
# to multiline_textsize()
draw.textsize(TEST_TEXT, font=ttf, spacing=4)
draw.textsize(TEST_TEXT, ttf, 4)
def test_multiline_width(self):
ttf = self.get_font()
im = Image.new(mode="RGB", size=(300, 100))
draw = ImageDraw.Draw(im)
assert (
draw.textsize("longest line", font=ttf)[0]
== draw.multiline_textsize("longest line\nline", font=ttf)[0]
)
def test_multiline_spacing(self):
ttf = self.get_font()
im = Image.new(mode="RGB", size=(300, 100))
draw = ImageDraw.Draw(im)
draw.multiline_text((0, 0), TEST_TEXT, font=ttf, spacing=10)
target = "Tests/images/multiline_text_spacing.png"
with Image.open(target) as target_img:
# Epsilon ~.5 fails with FreeType 2.7
assert_image_similar(im, target_img, 6.2)
def test_rotated_transposed_font(self):
img_grey = Image.new("L", (100, 100))
draw = ImageDraw.Draw(img_grey)
word = "testing"
font = self.get_font()
orientation = Image.ROTATE_90
transposed_font = ImageFont.TransposedFont(font, orientation=orientation)
# Original font
draw.font = font
box_size_a = draw.textsize(word)
# Rotated font
draw.font = transposed_font
box_size_b = draw.textsize(word)
# Check (w,h) of box a is (h,w) of box b
assert box_size_a[0] == box_size_b[1]
assert box_size_a[1] == box_size_b[0]
def test_unrotated_transposed_font(self):
img_grey = Image.new("L", (100, 100))
draw = ImageDraw.Draw(img_grey)
word = "testing"
font = self.get_font()
orientation = None
transposed_font = ImageFont.TransposedFont(font, orientation=orientation)
# Original font
draw.font = font
box_size_a = draw.textsize(word)
# Rotated font
draw.font = transposed_font
box_size_b = draw.textsize(word)
# Check boxes a and b are same size
assert box_size_a == box_size_b
def test_rotated_transposed_font_get_mask(self):
# Arrange
text = "mask this"
font = self.get_font()
orientation = Image.ROTATE_90
transposed_font = ImageFont.TransposedFont(font, orientation=orientation)
# Act
mask = transposed_font.getmask(text)
# Assert
assert mask.size == (13, 108)
def test_unrotated_transposed_font_get_mask(self):
# Arrange
text = "mask this"
font = self.get_font()
orientation = None
transposed_font = ImageFont.TransposedFont(font, orientation=orientation)
# Act
mask = transposed_font.getmask(text)
# Assert
assert mask.size == (108, 13)
def test_free_type_font_get_name(self):
# Arrange
font = self.get_font()
# Act
name = font.getname()
# Assert
assert ("FreeMono", "Regular") == name
def test_free_type_font_get_metrics(self):
# Arrange
font = self.get_font()
# Act
ascent, descent = font.getmetrics()
# Assert
assert isinstance(ascent, int)
assert isinstance(descent, int)
assert (ascent, descent) == (16, 4) # too exact check?
def test_free_type_font_get_offset(self):
# Arrange
font = self.get_font()
text = "offset this"
# Act
offset = font.getoffset(text)
# Assert
assert offset == (0, 3)
def test_free_type_font_get_mask(self):
# Arrange
font = self.get_font()
text = "mask this"
# Act
mask = font.getmask(text)
# Assert
assert mask.size == (108, 13)
def test_load_path_not_found(self):
# Arrange
filename = "somefilenamethatdoesntexist.ttf"
# Act/Assert
with pytest.raises(OSError):
ImageFont.load_path(filename)
with pytest.raises(OSError):
ImageFont.truetype(filename)
def test_load_non_font_bytes(self):
with open("Tests/images/hopper.jpg", "rb") as f:
with pytest.raises(OSError):
ImageFont.truetype(f)
def test_default_font(self):
# Arrange
txt = 'This is a "better than nothing" default font.'
im = Image.new(mode="RGB", size=(300, 100))
draw = ImageDraw.Draw(im)
target = "Tests/images/default_font.png"
with Image.open(target) as target_img:
# Act
default_font = ImageFont.load_default()
draw.text((10, 10), txt, font=default_font)
# Assert
assert_image_equal(im, target_img)
def test_getsize_empty(self):
# issue #2614
font = self.get_font()
# should not crash.
assert (0, 0) == font.getsize("")
def test_render_empty(self):
# issue 2666
font = self.get_font()
im = Image.new(mode="RGB", size=(300, 100))
target = im.copy()
draw = ImageDraw.Draw(im)
# should not crash here.
draw.text((10, 10), "", font=font)
assert_image_equal(im, target)
def test_unicode_pilfont(self):
# should not segfault, should return UnicodeDecodeError
# issue #2826
font = ImageFont.load_default()
with pytest.raises(UnicodeEncodeError):
font.getsize("’")
def test_unicode_extended(self):
# issue #3777
text = "A\u278A\U0001F12B"
target = "Tests/images/unicode_extended.png"
ttf = ImageFont.truetype(
"Tests/fonts/NotoSansSymbols-Regular.ttf",
FONT_SIZE,
layout_engine=self.LAYOUT_ENGINE,
)
img = Image.new("RGB", (100, 60))
d = ImageDraw.Draw(img)
d.text((10, 10), text, font=ttf)
# fails with 14.7
assert_image_similar_tofile(img, target, 6.2)
def _test_fake_loading_font(self, monkeypatch, path_to_fake, fontname):
# Make a copy of FreeTypeFont so we can patch the original
free_type_font = copy.deepcopy(ImageFont.FreeTypeFont)
with monkeypatch.context() as m:
m.setattr(ImageFont, "_FreeTypeFont", free_type_font, raising=False)
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
)
m.setattr(ImageFont, "FreeTypeFont", loadable_font)
font = ImageFont.truetype(fontname)
# Make sure it's loaded
name = font.getname()
assert ("FreeMono", "Regular") == name
@pytest.mark.skipif(is_win32(), reason="requires Unix or macOS")
def test_find_linux_font(self, monkeypatch):
# A lot of mocking here - this is more for hitting code and
# catching syntax like errors
font_directory = "/usr/local/share/fonts"
monkeypatch.setattr(sys, "platform", "linux")
monkeypatch.setenv("XDG_DATA_DIRS", "/usr/share/:/usr/local/share/")
def fake_walker(path):
if path == font_directory:
return [
(
path,
[],
["Arial.ttf", "Single.otf", "Duplicate.otf", "Duplicate.ttf"],
)
]
return [(path, [], ["some_random_font.ttf"])]
monkeypatch.setattr(os, "walk", fake_walker)
# Test that the font loads both with and without the
# extension
self._test_fake_loading_font(
monkeypatch, font_directory + "/Arial.ttf", "Arial.ttf"
)
self._test_fake_loading_font(
monkeypatch, font_directory + "/Arial.ttf", "Arial"
)
# Test that non-ttf fonts can be found without the
# extension
self._test_fake_loading_font(
monkeypatch, font_directory + "/Single.otf", "Single"
)
# Test that ttf fonts are preferred if the extension is
# not specified
self._test_fake_loading_font(
monkeypatch, font_directory + "/Duplicate.ttf", "Duplicate"
)
@pytest.mark.skipif(is_win32(), reason="requires Unix or macOS")
def test_find_macos_font(self, monkeypatch):
# Like the linux test, more cover hitting code rather than testing
# correctness.
font_directory = "/System/Library/Fonts"
monkeypatch.setattr(sys, "platform", "darwin")
def fake_walker(path):
if path == font_directory:
return [
(
path,
[],
["Arial.ttf", "Single.otf", "Duplicate.otf", "Duplicate.ttf"],
)
]
return [(path, [], ["some_random_font.ttf"])]
monkeypatch.setattr(os, "walk", fake_walker)
self._test_fake_loading_font(
monkeypatch, font_directory + "/Arial.ttf", "Arial.ttf"
)
self._test_fake_loading_font(
monkeypatch, font_directory + "/Arial.ttf", "Arial"
)
self._test_fake_loading_font(
monkeypatch, font_directory + "/Single.otf", "Single"
)
self._test_fake_loading_font(
monkeypatch, font_directory + "/Duplicate.ttf", "Duplicate"
)
def test_imagefont_getters(self):
# Arrange
t = self.get_font()
# Act / Assert
assert t.getmetrics() == (16, 4)
assert t.font.ascent == 16
assert t.font.descent == 4
assert t.font.height == 20
assert t.font.x_ppem == 20
assert t.font.y_ppem == 20
assert t.font.glyphs == 4177
assert t.getsize("A") == (12, 16)
assert t.getsize("AB") == (24, 16)
assert t.getsize("M") == (12, 16)
assert t.getsize("y") == (12, 20)
assert t.getsize("a") == (12, 16)
assert t.getsize_multiline("A") == (12, 16)
assert t.getsize_multiline("AB") == (24, 16)
assert t.getsize_multiline("a") == (12, 16)
assert t.getsize_multiline("ABC\n") == (36, 36)
assert t.getsize_multiline("ABC\nA") == (36, 36)
assert t.getsize_multiline("ABC\nAaaa") == (48, 36)
def test_getsize_stroke(self):
# Arrange
t = self.get_font()
# Act / Assert
for stroke_width in [0, 2]:
assert t.getsize("A", stroke_width=stroke_width) == (
12 + stroke_width * 2,
16 + stroke_width * 2,
)
assert t.getsize_multiline("ABC\nAaaa", stroke_width=stroke_width) == (
48 + stroke_width * 2,
36 + stroke_width * 4,
)
def test_complex_font_settings(self):
# Arrange
t = self.get_font()
# Act / Assert
if t.layout_engine == ImageFont.LAYOUT_BASIC:
with pytest.raises(KeyError):
t.getmask("абвг", direction="rtl")
with pytest.raises(KeyError):
t.getmask("абвг", features=["-kern"])
with pytest.raises(KeyError):
t.getmask("абвг", language="sr")
def test_variation_get(self):
font = self.get_font()
freetype = parse_version(features.version_module("freetype2"))
if freetype < parse_version("2.9.1"):
with pytest.raises(NotImplementedError):
font.get_variation_names()
with pytest.raises(NotImplementedError):
font.get_variation_axes()
return
with pytest.raises(OSError):
font.get_variation_names()
with pytest.raises(OSError):
font.get_variation_axes()
font = ImageFont.truetype("Tests/fonts/AdobeVFPrototype.ttf")
assert font.get_variation_names(), [
b"ExtraLight",
b"Light",
b"Regular",
b"Semibold",
b"Bold",
b"Black",
b"Black Medium Contrast",
b"Black High Contrast",
b"Default",
]
assert font.get_variation_axes() == [
{"name": b"Weight", "minimum": 200, "maximum": 900, "default": 389},
{"name": b"Contrast", "minimum": 0, "maximum": 100, "default": 0},
]
font = ImageFont.truetype("Tests/fonts/TINY5x3GX.ttf")
assert font.get_variation_names() == [
b"20",
b"40",
b"60",
b"80",
b"100",
b"120",
b"140",
b"160",
b"180",
b"200",
b"220",
b"240",
b"260",
b"280",
b"300",
b"Regular",
]
assert font.get_variation_axes() == [
{"name": b"Size", "minimum": 0, "maximum": 300, "default": 0}
]
def _check_text(self, font, path, epsilon):
im = Image.new("RGB", (100, 75), "white")
d = ImageDraw.Draw(im)
d.text((10, 10), "Text", font=font, fill="black")
try:
with Image.open(path) as expected:
assert_image_similar(im, expected, epsilon)
except AssertionError:
if "_adobe" in path:
path = path.replace("_adobe", "_adobe_older_harfbuzz")
with Image.open(path) as expected:
assert_image_similar(im, expected, epsilon)
else:
raise
def test_variation_set_by_name(self):
font = self.get_font()
freetype = parse_version(features.version_module("freetype2"))
if freetype < parse_version("2.9.1"):
with pytest.raises(NotImplementedError):
font.set_variation_by_name("Bold")
return
with pytest.raises(OSError):
font.set_variation_by_name("Bold")
font = ImageFont.truetype("Tests/fonts/AdobeVFPrototype.ttf", 36)
self._check_text(font, "Tests/images/variation_adobe.png", 11)
for name in ["Bold", b"Bold"]:
font.set_variation_by_name(name)
self._check_text(font, "Tests/images/variation_adobe_name.png", 11)
font = ImageFont.truetype("Tests/fonts/TINY5x3GX.ttf", 36)
self._check_text(font, "Tests/images/variation_tiny.png", 40)
for name in ["200", b"200"]:
font.set_variation_by_name(name)
self._check_text(font, "Tests/images/variation_tiny_name.png", 40)
def test_variation_set_by_axes(self):
font = self.get_font()
freetype = parse_version(features.version_module("freetype2"))
if freetype < parse_version("2.9.1"):
with pytest.raises(NotImplementedError):
font.set_variation_by_axes([100])
return
with pytest.raises(OSError):
font.set_variation_by_axes([500, 50])
font = ImageFont.truetype("Tests/fonts/AdobeVFPrototype.ttf", 36)
font.set_variation_by_axes([500, 50])
self._check_text(font, "Tests/images/variation_adobe_axes.png", 11.05)
font = ImageFont.truetype("Tests/fonts/TINY5x3GX.ttf", 36)
font.set_variation_by_axes([100])
self._check_text(font, "Tests/images/variation_tiny_axes.png", 32.5)
@pytest.mark.parametrize(
"anchor, left, left_old, top",
(
# test horizontal anchors
("ls", 0, 0, -36),
("ms", -64, -65, -36),
("rs", -128, -129, -36),
# test vertical anchors
("ma", -64, -65, 16),
("mt", -64, -65, 0),
("mm", -64, -65, -17),
("mb", -64, -65, -44),
("md", -64, -65, -51),
),
ids=("ls", "ms", "rs", "ma", "mt", "mm", "mb", "md"),
)
def test_anchor(self, anchor, left, left_old, top):
name, text = "quick", "Quick"
path = f"Tests/images/test_anchor_{name}_{anchor}.png"
freetype = parse_version(features.version_module("freetype2"))
if freetype < parse_version("2.4"):
width, height = (129, 44)
left = left_old
elif self.LAYOUT_ENGINE == ImageFont.LAYOUT_RAQM:
width, height = (129, 44)
else:
width, height = (128, 44)
bbox_expected = (left, top, left + width, top + height)
f = ImageFont.truetype(
"Tests/fonts/NotoSans-Regular.ttf", 48, layout_engine=self.LAYOUT_ENGINE
)
im = Image.new("RGB", (200, 200), "white")
d = ImageDraw.Draw(im)
d.line(((0, 100), (200, 100)), "gray")
d.line(((100, 0), (100, 200)), "gray")
d.text((100, 100), text, fill="black", anchor=anchor, font=f)
assert d.textbbox((0, 0), text, f, anchor=anchor) == bbox_expected
with Image.open(path) as expected:
assert_image_similar(im, expected, 7)
@pytest.mark.parametrize(
"anchor, align",
(
# test horizontal anchors
("lm", "left"),
("lm", "center"),
("lm", "right"),
("mm", "left"),
("mm", "center"),
("mm", "right"),
("rm", "left"),
("rm", "center"),
("rm", "right"),
# test vertical anchors
("ma", "center"),
# ("mm", "center"), # duplicate
("md", "center"),
),
)
def test_anchor_multiline(self, anchor, align):
target = f"Tests/images/test_anchor_multiline_{anchor}_{align}.png"
text = "a\nlong\ntext sample"
f = ImageFont.truetype(
"Tests/fonts/NotoSans-Regular.ttf", 48, layout_engine=self.LAYOUT_ENGINE
)
# test render
im = Image.new("RGB", (600, 400), "white")
d = ImageDraw.Draw(im)
d.line(((0, 200), (600, 200)), "gray")
d.line(((300, 0), (300, 400)), "gray")
d.multiline_text(
(300, 200), text, fill="black", anchor=anchor, font=f, align=align
)
with Image.open(target) as expected:
assert_image_similar(im, expected, 4)
def test_anchor_invalid(self):
font = self.get_font()
im = Image.new("RGB", (100, 100), "white")
d = ImageDraw.Draw(im)
d.font = font
for anchor in ["", "l", "a", "lax", "sa", "xa", "lx"]:
pytest.raises(ValueError, lambda: font.getmask2("hello", anchor=anchor))
pytest.raises(ValueError, lambda: font.getbbox("hello", anchor=anchor))
pytest.raises(ValueError, lambda: d.text((0, 0), "hello", anchor=anchor))
pytest.raises(
ValueError, lambda: d.textbbox((0, 0), "hello", anchor=anchor)
)
pytest.raises(
ValueError, lambda: d.multiline_text((0, 0), "foo\nbar", anchor=anchor)
)
pytest.raises(
ValueError,
lambda: d.multiline_textbbox((0, 0), "foo\nbar", anchor=anchor),
)
for anchor in ["lt", "lb"]:
pytest.raises(
ValueError, lambda: d.multiline_text((0, 0), "foo\nbar", anchor=anchor)
)
pytest.raises(
ValueError,
lambda: d.multiline_textbbox((0, 0), "foo\nbar", anchor=anchor),
)
@skip_unless_feature("freetype2")
@pytest.mark.parametrize("bpp", (1, 2, 4, 8))
def test_bitmap_font(self, bpp):
text = "Bitmap Font"
layout_name = ["basic", "raqm"][self.LAYOUT_ENGINE]
target = f"Tests/images/bitmap_font_{bpp}_{layout_name}.png"
font = ImageFont.truetype(
f"Tests/fonts/DejaVuSans-24-{bpp}-stripped.ttf",
24,
layout_engine=self.LAYOUT_ENGINE,
)
im = Image.new("RGB", (160, 35), "white")
draw = ImageDraw.Draw(im)
draw.text((2, 2), text, "black", font)
assert_image_equal_tofile(im, target)
def test_standard_embedded_color(self):
txt = "Hello World!"
ttf = ImageFont.truetype(FONT_PATH, 40, layout_engine=self.LAYOUT_ENGINE)
ttf.getsize(txt)
im = Image.new("RGB", (300, 64), "white")
d = ImageDraw.Draw(im)
d.text((10, 10), txt, font=ttf, fill="#fa6", embedded_color=True)
with Image.open("Tests/images/standard_embedded.png") as expected:
assert_image_similar(im, expected, 6.2)
@skip_unless_feature_version("freetype2", "2.5.0")
def test_cbdt(self):
try:
font = ImageFont.truetype(
"Tests/fonts/NotoColorEmoji.ttf",
size=109,
layout_engine=self.LAYOUT_ENGINE,
)
im = Image.new("RGB", (150, 150), "white")
d = ImageDraw.Draw(im)
d.text((10, 10), "\U0001f469", embedded_color=True, font=font)
with Image.open("Tests/images/cbdt_notocoloremoji.png") as expected:
assert_image_similar(im, expected, 6.2)
except IOError as e:
assert str(e) in ("unimplemented feature", "unknown file format")
pytest.skip("freetype compiled without libpng or unsupported")
@skip_unless_feature_version("freetype2", "2.5.0")
def test_cbdt_mask(self):
try:
font = ImageFont.truetype(
"Tests/fonts/NotoColorEmoji.ttf",
size=109,
layout_engine=self.LAYOUT_ENGINE,
)
im = Image.new("RGB", (150, 150), "white")
d = ImageDraw.Draw(im)
d.text((10, 10), "\U0001f469", "black", font=font)
with Image.open("Tests/images/cbdt_notocoloremoji_mask.png") as expected:
assert_image_similar(im, expected, 6.2)
except IOError as e:
assert str(e) in ("unimplemented feature", "unknown file format")
pytest.skip("freetype compiled without libpng or unsupported")
@skip_unless_feature_version("freetype2", "2.10.0")
def test_colr(self):
font = ImageFont.truetype(
"Tests/fonts/BungeeColor-Regular_colr_Windows.ttf",
size=64,
layout_engine=self.LAYOUT_ENGINE,
)
im = Image.new("RGB", (300, 75), "white")
d = ImageDraw.Draw(im)
d.text((15, 5), "Bungee", embedded_color=True, font=font)
with Image.open("Tests/images/colr_bungee.png") as expected:
assert_image_similar(im, expected, 21)
@skip_unless_feature_version("freetype2", "2.10.0")
def test_colr_mask(self):
font = ImageFont.truetype(
"Tests/fonts/BungeeColor-Regular_colr_Windows.ttf",
size=64,
layout_engine=self.LAYOUT_ENGINE,
)
im = Image.new("RGB", (300, 75), "white")
d = ImageDraw.Draw(im)
d.text((15, 5), "Bungee", "black", font=font)
with Image.open("Tests/images/colr_bungee_mask.png") as expected:
assert_image_similar(im, expected, 22)
def test_too_many_characters(self):
font = ImageFont.truetype(FONT_PATH, FONT_SIZE)
with pytest.raises(ValueError):
font.getlength("A" * 1000001)
with pytest.raises(ValueError):
font.getbbox("A" * 1000001)
with pytest.raises(ValueError):
font.getmask2("A" * 1000001)
transposed_font = ImageFont.TransposedFont(font)
with pytest.raises(ValueError):
transposed_font.getsize("A" * 1000001)
default_font = ImageFont.load_default()
with pytest.raises(ValueError):
default_font.getsize("A" * 1000001)
with pytest.raises(ValueError):
default_font.getmask("A" * 1000001)
@skip_unless_feature("raqm")
class TestImageFont_RaqmLayout(TestImageFont):
LAYOUT_ENGINE = ImageFont.LAYOUT_RAQM
@skip_unless_feature_version("freetype2", "2.4", "Different metrics")
def test_render_mono_size():
# issue 4177
im = Image.new("P", (100, 30), "white")
draw = ImageDraw.Draw(im)
ttf = ImageFont.truetype(
"Tests/fonts/DejaVuSans.ttf", 18, layout_engine=ImageFont.LAYOUT_BASIC
)
draw.text((10, 10), "r" * 10, "black", ttf)
assert_image_equal_tofile(im, "Tests/images/text_mono.gif")
def test_freetype_deprecation(monkeypatch):
# Arrange: mock features.version_module to return fake FreeType version
def fake_version_module(module):
return "2.7"
monkeypatch.setattr(features, "version_module", fake_version_module)
# Act / Assert
with pytest.warns(DeprecationWarning):
ImageFont.truetype(FONT_PATH, FONT_SIZE)
|