mirror of
https://github.com/python-pillow/Pillow.git
synced 2024-12-26 18:06:18 +03:00
d50445ff30
Similar to the recent adoption of Black. isort is a Python utility to sort imports alphabetically and automatically separate into sections. By using isort, contributors can quickly and automatically conform to the projects style without thinking. Just let the tool do it. Uses the configuration recommended by the Black to avoid conflicts of style. Rewrite TestImageQt.test_deprecated to no rely on import order.
365 lines
10 KiB
Python
365 lines
10 KiB
Python
from PIL import Image, ImageChops
|
|
|
|
from .helper import PillowTestCase, hopper
|
|
|
|
BLACK = (0, 0, 0)
|
|
BROWN = (127, 64, 0)
|
|
CYAN = (0, 255, 255)
|
|
DARK_GREEN = (0, 128, 0)
|
|
GREEN = (0, 255, 0)
|
|
ORANGE = (255, 128, 0)
|
|
WHITE = (255, 255, 255)
|
|
|
|
GREY = 128
|
|
|
|
|
|
class TestImageChops(PillowTestCase):
|
|
def test_sanity(self):
|
|
|
|
im = hopper("L")
|
|
|
|
ImageChops.constant(im, 128)
|
|
ImageChops.duplicate(im)
|
|
ImageChops.invert(im)
|
|
ImageChops.lighter(im, im)
|
|
ImageChops.darker(im, im)
|
|
ImageChops.difference(im, im)
|
|
ImageChops.multiply(im, im)
|
|
ImageChops.screen(im, im)
|
|
|
|
ImageChops.add(im, im)
|
|
ImageChops.add(im, im, 2.0)
|
|
ImageChops.add(im, im, 2.0, 128)
|
|
ImageChops.subtract(im, im)
|
|
ImageChops.subtract(im, im, 2.0)
|
|
ImageChops.subtract(im, im, 2.0, 128)
|
|
|
|
ImageChops.add_modulo(im, im)
|
|
ImageChops.subtract_modulo(im, im)
|
|
|
|
ImageChops.blend(im, im, 0.5)
|
|
ImageChops.composite(im, im, im)
|
|
|
|
ImageChops.offset(im, 10)
|
|
ImageChops.offset(im, 10, 20)
|
|
|
|
def test_add(self):
|
|
# Arrange
|
|
im1 = Image.open("Tests/images/imagedraw_ellipse_RGB.png")
|
|
im2 = Image.open("Tests/images/imagedraw_floodfill_RGB.png")
|
|
|
|
# Act
|
|
new = ImageChops.add(im1, im2)
|
|
|
|
# Assert
|
|
self.assertEqual(new.getbbox(), (25, 25, 76, 76))
|
|
self.assertEqual(new.getpixel((50, 50)), ORANGE)
|
|
|
|
def test_add_scale_offset(self):
|
|
# Arrange
|
|
im1 = Image.open("Tests/images/imagedraw_ellipse_RGB.png")
|
|
im2 = Image.open("Tests/images/imagedraw_floodfill_RGB.png")
|
|
|
|
# Act
|
|
new = ImageChops.add(im1, im2, scale=2.5, offset=100)
|
|
|
|
# Assert
|
|
self.assertEqual(new.getbbox(), (0, 0, 100, 100))
|
|
self.assertEqual(new.getpixel((50, 50)), (202, 151, 100))
|
|
|
|
def test_add_clip(self):
|
|
# Arrange
|
|
im = hopper()
|
|
|
|
# Act
|
|
new = ImageChops.add(im, im)
|
|
|
|
# Assert
|
|
self.assertEqual(new.getpixel((50, 50)), (255, 255, 254))
|
|
|
|
def test_add_modulo(self):
|
|
# Arrange
|
|
im1 = Image.open("Tests/images/imagedraw_ellipse_RGB.png")
|
|
im2 = Image.open("Tests/images/imagedraw_floodfill_RGB.png")
|
|
|
|
# Act
|
|
new = ImageChops.add_modulo(im1, im2)
|
|
|
|
# Assert
|
|
self.assertEqual(new.getbbox(), (25, 25, 76, 76))
|
|
self.assertEqual(new.getpixel((50, 50)), ORANGE)
|
|
|
|
def test_add_modulo_no_clip(self):
|
|
# Arrange
|
|
im = hopper()
|
|
|
|
# Act
|
|
new = ImageChops.add_modulo(im, im)
|
|
|
|
# Assert
|
|
self.assertEqual(new.getpixel((50, 50)), (224, 76, 254))
|
|
|
|
def test_blend(self):
|
|
# Arrange
|
|
im1 = Image.open("Tests/images/imagedraw_ellipse_RGB.png")
|
|
im2 = Image.open("Tests/images/imagedraw_floodfill_RGB.png")
|
|
|
|
# Act
|
|
new = ImageChops.blend(im1, im2, 0.5)
|
|
|
|
# Assert
|
|
self.assertEqual(new.getbbox(), (25, 25, 76, 76))
|
|
self.assertEqual(new.getpixel((50, 50)), BROWN)
|
|
|
|
def test_constant(self):
|
|
# Arrange
|
|
im = Image.new("RGB", (20, 10))
|
|
|
|
# Act
|
|
new = ImageChops.constant(im, GREY)
|
|
|
|
# Assert
|
|
self.assertEqual(new.size, im.size)
|
|
self.assertEqual(new.getpixel((0, 0)), GREY)
|
|
self.assertEqual(new.getpixel((19, 9)), GREY)
|
|
|
|
def test_darker_image(self):
|
|
# Arrange
|
|
im1 = Image.open("Tests/images/imagedraw_chord_RGB.png")
|
|
im2 = Image.open("Tests/images/imagedraw_outline_chord_RGB.png")
|
|
|
|
# Act
|
|
new = ImageChops.darker(im1, im2)
|
|
|
|
# Assert
|
|
self.assert_image_equal(new, im2)
|
|
|
|
def test_darker_pixel(self):
|
|
# Arrange
|
|
im1 = hopper()
|
|
im2 = Image.open("Tests/images/imagedraw_chord_RGB.png")
|
|
|
|
# Act
|
|
new = ImageChops.darker(im1, im2)
|
|
|
|
# Assert
|
|
self.assertEqual(new.getpixel((50, 50)), (240, 166, 0))
|
|
|
|
def test_difference(self):
|
|
# Arrange
|
|
im1 = Image.open("Tests/images/imagedraw_arc_end_le_start.png")
|
|
im2 = Image.open("Tests/images/imagedraw_arc_no_loops.png")
|
|
|
|
# Act
|
|
new = ImageChops.difference(im1, im2)
|
|
|
|
# Assert
|
|
self.assertEqual(new.getbbox(), (25, 25, 76, 76))
|
|
|
|
def test_difference_pixel(self):
|
|
# Arrange
|
|
im1 = hopper()
|
|
im2 = Image.open("Tests/images/imagedraw_polygon_kite_RGB.png")
|
|
|
|
# Act
|
|
new = ImageChops.difference(im1, im2)
|
|
|
|
# Assert
|
|
self.assertEqual(new.getpixel((50, 50)), (240, 166, 128))
|
|
|
|
def test_duplicate(self):
|
|
# Arrange
|
|
im = hopper()
|
|
|
|
# Act
|
|
new = ImageChops.duplicate(im)
|
|
|
|
# Assert
|
|
self.assert_image_equal(new, im)
|
|
|
|
def test_invert(self):
|
|
# Arrange
|
|
im = Image.open("Tests/images/imagedraw_floodfill_RGB.png")
|
|
|
|
# Act
|
|
new = ImageChops.invert(im)
|
|
|
|
# Assert
|
|
self.assertEqual(new.getbbox(), (0, 0, 100, 100))
|
|
self.assertEqual(new.getpixel((0, 0)), WHITE)
|
|
self.assertEqual(new.getpixel((50, 50)), CYAN)
|
|
|
|
def test_lighter_image(self):
|
|
# Arrange
|
|
im1 = Image.open("Tests/images/imagedraw_chord_RGB.png")
|
|
im2 = Image.open("Tests/images/imagedraw_outline_chord_RGB.png")
|
|
|
|
# Act
|
|
new = ImageChops.lighter(im1, im2)
|
|
|
|
# Assert
|
|
self.assert_image_equal(new, im1)
|
|
|
|
def test_lighter_pixel(self):
|
|
# Arrange
|
|
im1 = hopper()
|
|
im2 = Image.open("Tests/images/imagedraw_chord_RGB.png")
|
|
|
|
# Act
|
|
new = ImageChops.lighter(im1, im2)
|
|
|
|
# Assert
|
|
self.assertEqual(new.getpixel((50, 50)), (255, 255, 127))
|
|
|
|
def test_multiply_black(self):
|
|
"""If you multiply an image with a solid black image,
|
|
the result is black."""
|
|
# Arrange
|
|
im1 = hopper()
|
|
black = Image.new("RGB", im1.size, "black")
|
|
|
|
# Act
|
|
new = ImageChops.multiply(im1, black)
|
|
|
|
# Assert
|
|
self.assert_image_equal(new, black)
|
|
|
|
def test_multiply_green(self):
|
|
# Arrange
|
|
im = Image.open("Tests/images/imagedraw_floodfill_RGB.png")
|
|
green = Image.new("RGB", im.size, "green")
|
|
|
|
# Act
|
|
new = ImageChops.multiply(im, green)
|
|
|
|
# Assert
|
|
self.assertEqual(new.getbbox(), (25, 25, 76, 76))
|
|
self.assertEqual(new.getpixel((25, 25)), DARK_GREEN)
|
|
self.assertEqual(new.getpixel((50, 50)), BLACK)
|
|
|
|
def test_multiply_white(self):
|
|
"""If you multiply with a solid white image,
|
|
the image is unaffected."""
|
|
# Arrange
|
|
im1 = hopper()
|
|
white = Image.new("RGB", im1.size, "white")
|
|
|
|
# Act
|
|
new = ImageChops.multiply(im1, white)
|
|
|
|
# Assert
|
|
self.assert_image_equal(new, im1)
|
|
|
|
def test_offset(self):
|
|
# Arrange
|
|
im = Image.open("Tests/images/imagedraw_ellipse_RGB.png")
|
|
xoffset = 45
|
|
yoffset = 20
|
|
|
|
# Act
|
|
new = ImageChops.offset(im, xoffset, yoffset)
|
|
|
|
# Assert
|
|
self.assertEqual(new.getbbox(), (0, 45, 100, 96))
|
|
self.assertEqual(new.getpixel((50, 50)), BLACK)
|
|
self.assertEqual(new.getpixel((50 + xoffset, 50 + yoffset)), DARK_GREEN)
|
|
|
|
# Test no yoffset
|
|
self.assertEqual(
|
|
ImageChops.offset(im, xoffset), ImageChops.offset(im, xoffset, xoffset)
|
|
)
|
|
|
|
def test_screen(self):
|
|
# Arrange
|
|
im1 = Image.open("Tests/images/imagedraw_ellipse_RGB.png")
|
|
im2 = Image.open("Tests/images/imagedraw_floodfill_RGB.png")
|
|
|
|
# Act
|
|
new = ImageChops.screen(im1, im2)
|
|
|
|
# Assert
|
|
self.assertEqual(new.getbbox(), (25, 25, 76, 76))
|
|
self.assertEqual(new.getpixel((50, 50)), ORANGE)
|
|
|
|
def test_subtract(self):
|
|
# Arrange
|
|
im1 = Image.open("Tests/images/imagedraw_chord_RGB.png")
|
|
im2 = Image.open("Tests/images/imagedraw_outline_chord_RGB.png")
|
|
|
|
# Act
|
|
new = ImageChops.subtract(im1, im2)
|
|
|
|
# Assert
|
|
self.assertEqual(new.getbbox(), (25, 50, 76, 76))
|
|
self.assertEqual(new.getpixel((50, 50)), GREEN)
|
|
self.assertEqual(new.getpixel((50, 51)), BLACK)
|
|
|
|
def test_subtract_scale_offset(self):
|
|
# Arrange
|
|
im1 = Image.open("Tests/images/imagedraw_chord_RGB.png")
|
|
im2 = Image.open("Tests/images/imagedraw_outline_chord_RGB.png")
|
|
|
|
# Act
|
|
new = ImageChops.subtract(im1, im2, scale=2.5, offset=100)
|
|
|
|
# Assert
|
|
self.assertEqual(new.getbbox(), (0, 0, 100, 100))
|
|
self.assertEqual(new.getpixel((50, 50)), (100, 202, 100))
|
|
|
|
def test_subtract_clip(self):
|
|
# Arrange
|
|
im1 = hopper()
|
|
im2 = Image.open("Tests/images/imagedraw_chord_RGB.png")
|
|
|
|
# Act
|
|
new = ImageChops.subtract(im1, im2)
|
|
|
|
# Assert
|
|
self.assertEqual(new.getpixel((50, 50)), (0, 0, 127))
|
|
|
|
def test_subtract_modulo(self):
|
|
# Arrange
|
|
im1 = Image.open("Tests/images/imagedraw_chord_RGB.png")
|
|
im2 = Image.open("Tests/images/imagedraw_outline_chord_RGB.png")
|
|
|
|
# Act
|
|
new = ImageChops.subtract_modulo(im1, im2)
|
|
|
|
# Assert
|
|
self.assertEqual(new.getbbox(), (25, 50, 76, 76))
|
|
self.assertEqual(new.getpixel((50, 50)), GREEN)
|
|
self.assertEqual(new.getpixel((50, 51)), BLACK)
|
|
|
|
def test_subtract_modulo_no_clip(self):
|
|
# Arrange
|
|
im1 = hopper()
|
|
im2 = Image.open("Tests/images/imagedraw_chord_RGB.png")
|
|
|
|
# Act
|
|
new = ImageChops.subtract_modulo(im1, im2)
|
|
|
|
# Assert
|
|
self.assertEqual(new.getpixel((50, 50)), (241, 167, 127))
|
|
|
|
def test_logical(self):
|
|
def table(op, a, b):
|
|
out = []
|
|
for x in (a, b):
|
|
imx = Image.new("1", (1, 1), x)
|
|
for y in (a, b):
|
|
imy = Image.new("1", (1, 1), y)
|
|
out.append(op(imx, imy).getpixel((0, 0)))
|
|
return tuple(out)
|
|
|
|
self.assertEqual(table(ImageChops.logical_and, 0, 1), (0, 0, 0, 255))
|
|
self.assertEqual(table(ImageChops.logical_or, 0, 1), (0, 255, 255, 255))
|
|
self.assertEqual(table(ImageChops.logical_xor, 0, 1), (0, 255, 255, 0))
|
|
|
|
self.assertEqual(table(ImageChops.logical_and, 0, 128), (0, 0, 0, 255))
|
|
self.assertEqual(table(ImageChops.logical_or, 0, 128), (0, 255, 255, 255))
|
|
self.assertEqual(table(ImageChops.logical_xor, 0, 128), (0, 255, 255, 0))
|
|
|
|
self.assertEqual(table(ImageChops.logical_and, 0, 255), (0, 0, 0, 255))
|
|
self.assertEqual(table(ImageChops.logical_or, 0, 255), (0, 255, 255, 255))
|
|
self.assertEqual(table(ImageChops.logical_xor, 0, 255), (0, 255, 255, 0))
|