mirror of
https://github.com/python-pillow/Pillow.git
synced 2024-12-26 01:46:18 +03:00
587 lines
20 KiB
Python
587 lines
20 KiB
Python
import pytest
|
|
|
|
from PIL import Image, ImageSequence, PngImagePlugin
|
|
|
|
|
|
# APNG browser support tests and fixtures via:
|
|
# https://philip.html5.org/tests/apng/tests.html
|
|
# (referenced from https://wiki.mozilla.org/APNG_Specification)
|
|
def test_apng_basic():
|
|
with Image.open("Tests/images/apng/single_frame.png") as im:
|
|
assert not im.is_animated
|
|
assert im.n_frames == 1
|
|
assert im.get_format_mimetype() == "image/apng"
|
|
assert im.info.get("default_image") is None
|
|
assert im.getpixel((0, 0)) == (0, 255, 0, 255)
|
|
assert im.getpixel((64, 32)) == (0, 255, 0, 255)
|
|
|
|
with Image.open("Tests/images/apng/single_frame_default.png") as im:
|
|
assert im.is_animated
|
|
assert im.n_frames == 2
|
|
assert im.get_format_mimetype() == "image/apng"
|
|
assert im.info.get("default_image")
|
|
assert im.getpixel((0, 0)) == (255, 0, 0, 255)
|
|
assert im.getpixel((64, 32)) == (255, 0, 0, 255)
|
|
im.seek(1)
|
|
assert im.getpixel((0, 0)) == (0, 255, 0, 255)
|
|
assert im.getpixel((64, 32)) == (0, 255, 0, 255)
|
|
|
|
# test out of bounds seek
|
|
with pytest.raises(EOFError):
|
|
im.seek(2)
|
|
|
|
# test rewind support
|
|
im.seek(0)
|
|
assert im.getpixel((0, 0)) == (255, 0, 0, 255)
|
|
assert im.getpixel((64, 32)) == (255, 0, 0, 255)
|
|
im.seek(1)
|
|
assert im.getpixel((0, 0)) == (0, 255, 0, 255)
|
|
assert im.getpixel((64, 32)) == (0, 255, 0, 255)
|
|
|
|
|
|
def test_apng_fdat():
|
|
with Image.open("Tests/images/apng/split_fdat.png") as im:
|
|
im.seek(im.n_frames - 1)
|
|
assert im.getpixel((0, 0)) == (0, 255, 0, 255)
|
|
assert im.getpixel((64, 32)) == (0, 255, 0, 255)
|
|
|
|
with Image.open("Tests/images/apng/split_fdat_zero_chunk.png") as im:
|
|
im.seek(im.n_frames - 1)
|
|
assert im.getpixel((0, 0)) == (0, 255, 0, 255)
|
|
assert im.getpixel((64, 32)) == (0, 255, 0, 255)
|
|
|
|
|
|
def test_apng_dispose():
|
|
with Image.open("Tests/images/apng/dispose_op_none.png") as im:
|
|
im.seek(im.n_frames - 1)
|
|
assert im.getpixel((0, 0)) == (0, 255, 0, 255)
|
|
assert im.getpixel((64, 32)) == (0, 255, 0, 255)
|
|
|
|
with Image.open("Tests/images/apng/dispose_op_background.png") as im:
|
|
im.seek(im.n_frames - 1)
|
|
assert im.getpixel((0, 0)) == (0, 0, 0, 0)
|
|
assert im.getpixel((64, 32)) == (0, 0, 0, 0)
|
|
|
|
with Image.open("Tests/images/apng/dispose_op_background_final.png") as im:
|
|
im.seek(im.n_frames - 1)
|
|
assert im.getpixel((0, 0)) == (0, 255, 0, 255)
|
|
assert im.getpixel((64, 32)) == (0, 255, 0, 255)
|
|
|
|
with Image.open("Tests/images/apng/dispose_op_previous.png") as im:
|
|
im.seek(im.n_frames - 1)
|
|
assert im.getpixel((0, 0)) == (0, 255, 0, 255)
|
|
assert im.getpixel((64, 32)) == (0, 255, 0, 255)
|
|
|
|
with Image.open("Tests/images/apng/dispose_op_previous_final.png") as im:
|
|
im.seek(im.n_frames - 1)
|
|
assert im.getpixel((0, 0)) == (0, 255, 0, 255)
|
|
assert im.getpixel((64, 32)) == (0, 255, 0, 255)
|
|
|
|
with Image.open("Tests/images/apng/dispose_op_previous_first.png") as im:
|
|
im.seek(im.n_frames - 1)
|
|
assert im.getpixel((0, 0)) == (0, 0, 0, 0)
|
|
assert im.getpixel((64, 32)) == (0, 0, 0, 0)
|
|
|
|
|
|
def test_apng_dispose_region():
|
|
with Image.open("Tests/images/apng/dispose_op_none_region.png") as im:
|
|
im.seek(im.n_frames - 1)
|
|
assert im.getpixel((0, 0)) == (0, 255, 0, 255)
|
|
assert im.getpixel((64, 32)) == (0, 255, 0, 255)
|
|
|
|
with Image.open("Tests/images/apng/dispose_op_background_before_region.png") as im:
|
|
im.seek(im.n_frames - 1)
|
|
assert im.getpixel((0, 0)) == (0, 0, 0, 0)
|
|
assert im.getpixel((64, 32)) == (0, 0, 0, 0)
|
|
|
|
with Image.open("Tests/images/apng/dispose_op_background_region.png") as im:
|
|
im.seek(im.n_frames - 1)
|
|
assert im.getpixel((0, 0)) == (0, 0, 255, 255)
|
|
assert im.getpixel((64, 32)) == (0, 0, 0, 0)
|
|
|
|
with Image.open("Tests/images/apng/dispose_op_previous_region.png") as im:
|
|
im.seek(im.n_frames - 1)
|
|
assert im.getpixel((0, 0)) == (0, 255, 0, 255)
|
|
assert im.getpixel((64, 32)) == (0, 255, 0, 255)
|
|
|
|
|
|
def test_apng_dispose_op_background_p_mode():
|
|
with Image.open("Tests/images/apng/dispose_op_background_p_mode.png") as im:
|
|
im.seek(1)
|
|
im.load()
|
|
assert im.size == (128, 64)
|
|
|
|
|
|
def test_apng_blend():
|
|
with Image.open("Tests/images/apng/blend_op_source_solid.png") as im:
|
|
im.seek(im.n_frames - 1)
|
|
assert im.getpixel((0, 0)) == (0, 255, 0, 255)
|
|
assert im.getpixel((64, 32)) == (0, 255, 0, 255)
|
|
|
|
with Image.open("Tests/images/apng/blend_op_source_transparent.png") as im:
|
|
im.seek(im.n_frames - 1)
|
|
assert im.getpixel((0, 0)) == (0, 0, 0, 0)
|
|
assert im.getpixel((64, 32)) == (0, 0, 0, 0)
|
|
|
|
with Image.open("Tests/images/apng/blend_op_source_near_transparent.png") as im:
|
|
im.seek(im.n_frames - 1)
|
|
assert im.getpixel((0, 0)) == (0, 255, 0, 2)
|
|
assert im.getpixel((64, 32)) == (0, 255, 0, 2)
|
|
|
|
with Image.open("Tests/images/apng/blend_op_over.png") as im:
|
|
im.seek(im.n_frames - 1)
|
|
assert im.getpixel((0, 0)) == (0, 255, 0, 255)
|
|
assert im.getpixel((64, 32)) == (0, 255, 0, 255)
|
|
|
|
with Image.open("Tests/images/apng/blend_op_over_near_transparent.png") as im:
|
|
im.seek(im.n_frames - 1)
|
|
assert im.getpixel((0, 0)) == (0, 255, 0, 97)
|
|
assert im.getpixel((64, 32)) == (0, 255, 0, 255)
|
|
|
|
|
|
def test_apng_chunk_order():
|
|
with Image.open("Tests/images/apng/fctl_actl.png") as im:
|
|
im.seek(im.n_frames - 1)
|
|
assert im.getpixel((0, 0)) == (0, 255, 0, 255)
|
|
assert im.getpixel((64, 32)) == (0, 255, 0, 255)
|
|
|
|
|
|
def test_apng_delay():
|
|
with Image.open("Tests/images/apng/delay.png") as im:
|
|
im.seek(1)
|
|
assert im.info.get("duration") == 500.0
|
|
im.seek(2)
|
|
assert im.info.get("duration") == 1000.0
|
|
im.seek(3)
|
|
assert im.info.get("duration") == 500.0
|
|
im.seek(4)
|
|
assert im.info.get("duration") == 1000.0
|
|
|
|
with Image.open("Tests/images/apng/delay_round.png") as im:
|
|
im.seek(1)
|
|
assert im.info.get("duration") == 500.0
|
|
im.seek(2)
|
|
assert im.info.get("duration") == 1000.0
|
|
|
|
with Image.open("Tests/images/apng/delay_short_max.png") as im:
|
|
im.seek(1)
|
|
assert im.info.get("duration") == 500.0
|
|
im.seek(2)
|
|
assert im.info.get("duration") == 1000.0
|
|
|
|
with Image.open("Tests/images/apng/delay_zero_denom.png") as im:
|
|
im.seek(1)
|
|
assert im.info.get("duration") == 500.0
|
|
im.seek(2)
|
|
assert im.info.get("duration") == 1000.0
|
|
|
|
with Image.open("Tests/images/apng/delay_zero_numer.png") as im:
|
|
im.seek(1)
|
|
assert im.info.get("duration") == 0.0
|
|
im.seek(2)
|
|
assert im.info.get("duration") == 0.0
|
|
im.seek(3)
|
|
assert im.info.get("duration") == 500.0
|
|
im.seek(4)
|
|
assert im.info.get("duration") == 1000.0
|
|
|
|
|
|
def test_apng_num_plays():
|
|
with Image.open("Tests/images/apng/num_plays.png") as im:
|
|
assert im.info.get("loop") == 0
|
|
|
|
with Image.open("Tests/images/apng/num_plays_1.png") as im:
|
|
assert im.info.get("loop") == 1
|
|
|
|
|
|
def test_apng_mode():
|
|
with Image.open("Tests/images/apng/mode_16bit.png") as im:
|
|
assert im.mode == "RGBA"
|
|
im.seek(im.n_frames - 1)
|
|
assert im.getpixel((0, 0)) == (0, 0, 128, 191)
|
|
assert im.getpixel((64, 32)) == (0, 0, 128, 191)
|
|
|
|
with Image.open("Tests/images/apng/mode_greyscale.png") as im:
|
|
assert im.mode == "L"
|
|
im.seek(im.n_frames - 1)
|
|
assert im.getpixel((0, 0)) == 128
|
|
assert im.getpixel((64, 32)) == 255
|
|
|
|
with Image.open("Tests/images/apng/mode_greyscale_alpha.png") as im:
|
|
assert im.mode == "LA"
|
|
im.seek(im.n_frames - 1)
|
|
assert im.getpixel((0, 0)) == (128, 191)
|
|
assert im.getpixel((64, 32)) == (128, 191)
|
|
|
|
with Image.open("Tests/images/apng/mode_palette.png") as im:
|
|
assert im.mode == "P"
|
|
im.seek(im.n_frames - 1)
|
|
im = im.convert("RGB")
|
|
assert im.getpixel((0, 0)) == (0, 255, 0)
|
|
assert im.getpixel((64, 32)) == (0, 255, 0)
|
|
|
|
with Image.open("Tests/images/apng/mode_palette_alpha.png") as im:
|
|
assert im.mode == "P"
|
|
im.seek(im.n_frames - 1)
|
|
im = im.convert("RGBA")
|
|
assert im.getpixel((0, 0)) == (0, 255, 0, 255)
|
|
assert im.getpixel((64, 32)) == (0, 255, 0, 255)
|
|
|
|
with Image.open("Tests/images/apng/mode_palette_1bit_alpha.png") as im:
|
|
assert im.mode == "P"
|
|
im.seek(im.n_frames - 1)
|
|
im = im.convert("RGBA")
|
|
assert im.getpixel((0, 0)) == (0, 0, 255, 128)
|
|
assert im.getpixel((64, 32)) == (0, 0, 255, 128)
|
|
|
|
|
|
def test_apng_chunk_errors():
|
|
with Image.open("Tests/images/apng/chunk_no_actl.png") as im:
|
|
assert not im.is_animated
|
|
|
|
def open():
|
|
with Image.open("Tests/images/apng/chunk_multi_actl.png") as im:
|
|
im.load()
|
|
assert not im.is_animated
|
|
|
|
pytest.warns(UserWarning, open)
|
|
|
|
with Image.open("Tests/images/apng/chunk_actl_after_idat.png") as im:
|
|
assert not im.is_animated
|
|
|
|
with Image.open("Tests/images/apng/chunk_no_fctl.png") as im:
|
|
with pytest.raises(SyntaxError):
|
|
im.seek(im.n_frames - 1)
|
|
|
|
with Image.open("Tests/images/apng/chunk_repeat_fctl.png") as im:
|
|
with pytest.raises(SyntaxError):
|
|
im.seek(im.n_frames - 1)
|
|
|
|
with Image.open("Tests/images/apng/chunk_no_fdat.png") as im:
|
|
with pytest.raises(SyntaxError):
|
|
im.seek(im.n_frames - 1)
|
|
|
|
|
|
def test_apng_syntax_errors():
|
|
def open_frames_zero():
|
|
with Image.open("Tests/images/apng/syntax_num_frames_zero.png") as im:
|
|
assert not im.is_animated
|
|
with pytest.raises(OSError):
|
|
im.load()
|
|
|
|
pytest.warns(UserWarning, open_frames_zero)
|
|
|
|
def open_frames_zero_default():
|
|
with Image.open("Tests/images/apng/syntax_num_frames_zero_default.png") as im:
|
|
assert not im.is_animated
|
|
im.load()
|
|
|
|
pytest.warns(UserWarning, open_frames_zero_default)
|
|
|
|
# we can handle this case gracefully
|
|
exception = None
|
|
with Image.open("Tests/images/apng/syntax_num_frames_low.png") as im:
|
|
try:
|
|
im.seek(im.n_frames - 1)
|
|
except Exception as e:
|
|
exception = e
|
|
assert exception is None
|
|
|
|
with pytest.raises(SyntaxError):
|
|
with Image.open("Tests/images/apng/syntax_num_frames_high.png") as im:
|
|
im.seek(im.n_frames - 1)
|
|
im.load()
|
|
|
|
def open():
|
|
with Image.open("Tests/images/apng/syntax_num_frames_invalid.png") as im:
|
|
assert not im.is_animated
|
|
im.load()
|
|
|
|
pytest.warns(UserWarning, open)
|
|
|
|
|
|
def test_apng_sequence_errors():
|
|
test_files = [
|
|
"sequence_start.png",
|
|
"sequence_gap.png",
|
|
"sequence_repeat.png",
|
|
"sequence_repeat_chunk.png",
|
|
"sequence_reorder.png",
|
|
"sequence_reorder_chunk.png",
|
|
"sequence_fdat_fctl.png",
|
|
]
|
|
for f in test_files:
|
|
with pytest.raises(SyntaxError):
|
|
with Image.open("Tests/images/apng/{0}".format(f)) as im:
|
|
im.seek(im.n_frames - 1)
|
|
im.load()
|
|
|
|
|
|
def test_apng_save(tmp_path):
|
|
with Image.open("Tests/images/apng/single_frame.png") as im:
|
|
test_file = str(tmp_path / "temp.png")
|
|
im.save(test_file, save_all=True)
|
|
|
|
with Image.open(test_file) as im:
|
|
im.load()
|
|
assert not im.is_animated
|
|
assert im.n_frames == 1
|
|
assert im.get_format_mimetype() == "image/apng"
|
|
assert im.info.get("default_image") is None
|
|
assert im.getpixel((0, 0)) == (0, 255, 0, 255)
|
|
assert im.getpixel((64, 32)) == (0, 255, 0, 255)
|
|
|
|
with Image.open("Tests/images/apng/single_frame_default.png") as im:
|
|
frames = []
|
|
for frame_im in ImageSequence.Iterator(im):
|
|
frames.append(frame_im.copy())
|
|
frames[0].save(
|
|
test_file, save_all=True, default_image=True, append_images=frames[1:]
|
|
)
|
|
|
|
with Image.open(test_file) as im:
|
|
im.load()
|
|
assert im.is_animated
|
|
assert im.n_frames == 2
|
|
assert im.get_format_mimetype() == "image/apng"
|
|
assert im.info.get("default_image")
|
|
im.seek(1)
|
|
assert im.getpixel((0, 0)) == (0, 255, 0, 255)
|
|
assert im.getpixel((64, 32)) == (0, 255, 0, 255)
|
|
|
|
|
|
def test_apng_save_split_fdat(tmp_path):
|
|
# test to make sure we do not generate sequence errors when writing
|
|
# frames with image data spanning multiple fdAT chunks (in this case
|
|
# both the default image and first animation frame will span multiple
|
|
# data chunks)
|
|
test_file = str(tmp_path / "temp.png")
|
|
with Image.open("Tests/images/old-style-jpeg-compression.png") as im:
|
|
frames = [im.copy(), Image.new("RGBA", im.size, (255, 0, 0, 255))]
|
|
im.save(
|
|
test_file,
|
|
save_all=True,
|
|
default_image=True,
|
|
append_images=frames,
|
|
)
|
|
with Image.open(test_file) as im:
|
|
exception = None
|
|
try:
|
|
im.seek(im.n_frames - 1)
|
|
im.load()
|
|
except Exception as e:
|
|
exception = e
|
|
assert exception is None
|
|
|
|
|
|
def test_apng_save_duration_loop(tmp_path):
|
|
test_file = str(tmp_path / "temp.png")
|
|
with Image.open("Tests/images/apng/delay.png") as im:
|
|
frames = []
|
|
durations = []
|
|
loop = im.info.get("loop")
|
|
default_image = im.info.get("default_image")
|
|
for i, frame_im in enumerate(ImageSequence.Iterator(im)):
|
|
frames.append(frame_im.copy())
|
|
if i != 0 or not default_image:
|
|
durations.append(frame_im.info.get("duration", 0))
|
|
frames[0].save(
|
|
test_file,
|
|
save_all=True,
|
|
default_image=default_image,
|
|
append_images=frames[1:],
|
|
duration=durations,
|
|
loop=loop,
|
|
)
|
|
|
|
with Image.open(test_file) as im:
|
|
im.load()
|
|
assert im.info.get("loop") == loop
|
|
im.seek(1)
|
|
assert im.info.get("duration") == 500.0
|
|
im.seek(2)
|
|
assert im.info.get("duration") == 1000.0
|
|
im.seek(3)
|
|
assert im.info.get("duration") == 500.0
|
|
im.seek(4)
|
|
assert im.info.get("duration") == 1000.0
|
|
|
|
# test removal of duplicated frames
|
|
frame = Image.new("RGBA", (128, 64), (255, 0, 0, 255))
|
|
frame.save(test_file, save_all=True, append_images=[frame], duration=[500, 250])
|
|
with Image.open(test_file) as im:
|
|
im.load()
|
|
assert im.n_frames == 1
|
|
assert im.info.get("duration") == 750
|
|
|
|
|
|
def test_apng_save_disposal(tmp_path):
|
|
test_file = str(tmp_path / "temp.png")
|
|
size = (128, 64)
|
|
red = Image.new("RGBA", size, (255, 0, 0, 255))
|
|
green = Image.new("RGBA", size, (0, 255, 0, 255))
|
|
transparent = Image.new("RGBA", size, (0, 0, 0, 0))
|
|
|
|
# test APNG_DISPOSE_OP_NONE
|
|
red.save(
|
|
test_file,
|
|
save_all=True,
|
|
append_images=[green, transparent],
|
|
disposal=PngImagePlugin.APNG_DISPOSE_OP_NONE,
|
|
blend=PngImagePlugin.APNG_BLEND_OP_OVER,
|
|
)
|
|
with Image.open(test_file) as im:
|
|
im.seek(2)
|
|
assert im.getpixel((0, 0)) == (0, 255, 0, 255)
|
|
assert im.getpixel((64, 32)) == (0, 255, 0, 255)
|
|
|
|
# test APNG_DISPOSE_OP_BACKGROUND
|
|
disposal = [
|
|
PngImagePlugin.APNG_DISPOSE_OP_NONE,
|
|
PngImagePlugin.APNG_DISPOSE_OP_BACKGROUND,
|
|
PngImagePlugin.APNG_DISPOSE_OP_NONE,
|
|
]
|
|
red.save(
|
|
test_file,
|
|
save_all=True,
|
|
append_images=[red, transparent],
|
|
disposal=disposal,
|
|
blend=PngImagePlugin.APNG_BLEND_OP_OVER,
|
|
)
|
|
with Image.open(test_file) as im:
|
|
im.seek(2)
|
|
assert im.getpixel((0, 0)) == (0, 0, 0, 0)
|
|
assert im.getpixel((64, 32)) == (0, 0, 0, 0)
|
|
|
|
disposal = [
|
|
PngImagePlugin.APNG_DISPOSE_OP_NONE,
|
|
PngImagePlugin.APNG_DISPOSE_OP_BACKGROUND,
|
|
]
|
|
red.save(
|
|
test_file,
|
|
save_all=True,
|
|
append_images=[green],
|
|
disposal=disposal,
|
|
blend=PngImagePlugin.APNG_BLEND_OP_OVER,
|
|
)
|
|
with Image.open(test_file) as im:
|
|
im.seek(1)
|
|
assert im.getpixel((0, 0)) == (0, 255, 0, 255)
|
|
assert im.getpixel((64, 32)) == (0, 255, 0, 255)
|
|
|
|
# test APNG_DISPOSE_OP_PREVIOUS
|
|
disposal = [
|
|
PngImagePlugin.APNG_DISPOSE_OP_NONE,
|
|
PngImagePlugin.APNG_DISPOSE_OP_PREVIOUS,
|
|
PngImagePlugin.APNG_DISPOSE_OP_NONE,
|
|
]
|
|
red.save(
|
|
test_file,
|
|
save_all=True,
|
|
append_images=[green, red, transparent],
|
|
default_image=True,
|
|
disposal=disposal,
|
|
blend=PngImagePlugin.APNG_BLEND_OP_OVER,
|
|
)
|
|
with Image.open(test_file) as im:
|
|
im.seek(3)
|
|
assert im.getpixel((0, 0)) == (0, 255, 0, 255)
|
|
assert im.getpixel((64, 32)) == (0, 255, 0, 255)
|
|
|
|
disposal = [
|
|
PngImagePlugin.APNG_DISPOSE_OP_NONE,
|
|
PngImagePlugin.APNG_DISPOSE_OP_PREVIOUS,
|
|
]
|
|
red.save(
|
|
test_file,
|
|
save_all=True,
|
|
append_images=[green],
|
|
disposal=disposal,
|
|
blend=PngImagePlugin.APNG_BLEND_OP_OVER,
|
|
)
|
|
with Image.open(test_file) as im:
|
|
im.seek(1)
|
|
assert im.getpixel((0, 0)) == (0, 255, 0, 255)
|
|
assert im.getpixel((64, 32)) == (0, 255, 0, 255)
|
|
|
|
|
|
def test_apng_save_disposal_previous(tmp_path):
|
|
test_file = str(tmp_path / "temp.png")
|
|
size = (128, 64)
|
|
transparent = Image.new("RGBA", size, (0, 0, 0, 0))
|
|
red = Image.new("RGBA", size, (255, 0, 0, 255))
|
|
green = Image.new("RGBA", size, (0, 255, 0, 255))
|
|
|
|
# test APNG_DISPOSE_OP_NONE
|
|
transparent.save(
|
|
test_file,
|
|
save_all=True,
|
|
append_images=[red, green],
|
|
disposal=PngImagePlugin.APNG_DISPOSE_OP_PREVIOUS,
|
|
)
|
|
with Image.open(test_file) as im:
|
|
im.seek(2)
|
|
assert im.getpixel((0, 0)) == (0, 255, 0, 255)
|
|
assert im.getpixel((64, 32)) == (0, 255, 0, 255)
|
|
|
|
|
|
def test_apng_save_blend(tmp_path):
|
|
test_file = str(tmp_path / "temp.png")
|
|
size = (128, 64)
|
|
red = Image.new("RGBA", size, (255, 0, 0, 255))
|
|
green = Image.new("RGBA", size, (0, 255, 0, 255))
|
|
transparent = Image.new("RGBA", size, (0, 0, 0, 0))
|
|
|
|
# test APNG_BLEND_OP_SOURCE on solid color
|
|
blend = [
|
|
PngImagePlugin.APNG_BLEND_OP_OVER,
|
|
PngImagePlugin.APNG_BLEND_OP_SOURCE,
|
|
]
|
|
red.save(
|
|
test_file,
|
|
save_all=True,
|
|
append_images=[red, green],
|
|
default_image=True,
|
|
disposal=PngImagePlugin.APNG_DISPOSE_OP_NONE,
|
|
blend=blend,
|
|
)
|
|
with Image.open(test_file) as im:
|
|
im.seek(2)
|
|
assert im.getpixel((0, 0)) == (0, 255, 0, 255)
|
|
assert im.getpixel((64, 32)) == (0, 255, 0, 255)
|
|
|
|
# test APNG_BLEND_OP_SOURCE on transparent color
|
|
blend = [
|
|
PngImagePlugin.APNG_BLEND_OP_OVER,
|
|
PngImagePlugin.APNG_BLEND_OP_SOURCE,
|
|
]
|
|
red.save(
|
|
test_file,
|
|
save_all=True,
|
|
append_images=[red, transparent],
|
|
default_image=True,
|
|
disposal=PngImagePlugin.APNG_DISPOSE_OP_NONE,
|
|
blend=blend,
|
|
)
|
|
with Image.open(test_file) as im:
|
|
im.seek(2)
|
|
assert im.getpixel((0, 0)) == (0, 0, 0, 0)
|
|
assert im.getpixel((64, 32)) == (0, 0, 0, 0)
|
|
|
|
# test APNG_BLEND_OP_OVER
|
|
red.save(
|
|
test_file,
|
|
save_all=True,
|
|
append_images=[green, transparent],
|
|
default_image=True,
|
|
disposal=PngImagePlugin.APNG_DISPOSE_OP_NONE,
|
|
blend=PngImagePlugin.APNG_BLEND_OP_OVER,
|
|
)
|
|
with Image.open(test_file) as im:
|
|
im.seek(1)
|
|
assert im.getpixel((0, 0)) == (0, 255, 0, 255)
|
|
assert im.getpixel((64, 32)) == (0, 255, 0, 255)
|
|
im.seek(2)
|
|
assert im.getpixel((0, 0)) == (0, 255, 0, 255)
|
|
assert im.getpixel((64, 32)) == (0, 255, 0, 255)
|