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Use getpalette() in ImageOps

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This commit is contained in:
Andrew Murray 2022-09-19 21:34:29 +10:00
parent c0aaf54816
commit 279ddf4ce6
2 changed files with 17 additions and 4 deletions
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14
Tests/test_imageops.py
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@ -130,6 +130,20 @@ def test_pad():
) )
def test_palette():
im = hopper("P")
# Expand
expanded_im = ImageOps.expand(im)
assert_image_equal(im.convert("RGB"), expanded_im.convert("RGB"))
# Pad
padded_im = ImageOps.pad(im, (256, 128), centering=(0, 0))
assert_image_equal(
im.convert("RGB"), padded_im.convert("RGB").crop((0, 0, 128, 128))
)
def test_pil163(): def test_pil163():
# Division by zero in equalize if < 255 pixels in image (@PIL163) # Division by zero in equalize if < 255 pixels in image (@PIL163)

7
src/PIL/ImageOps.py
View File

@ -21,7 +21,7 @@ import functools
import operator import operator
import re import re
from . import Image from . import Image, ImagePalette
# #
# helpers # helpers
@ -292,7 +292,7 @@ def pad(image, size, method=Image.Resampling.BICUBIC, color=None, centering=(0.5
else: else:
out = Image.new(image.mode, size, color) out = Image.new(image.mode, size, color)
if resized.palette: if resized.palette:
out.putpalette(resized.palette) out.putpalette(resized.getpalette())
if resized.width != size[0]: if resized.width != size[0]:
x = int((size[0] - resized.width) * max(0, min(centering[0], 1))) x = int((size[0] - resized.width) * max(0, min(centering[0], 1)))
out.paste(resized, (x, 0)) out.paste(resized, (x, 0))
@ -399,8 +399,7 @@ def expand(image, border=0, fill=0):
height = top + image.size[1] + bottom height = top + image.size[1] + bottom
color = _color(fill, image.mode) color = _color(fill, image.mode)
if image.mode == "P" and image.palette: if image.mode == "P" and image.palette:
image.load() palette = ImagePalette.ImagePalette(palette=image.getpalette())
palette = image.palette.copy()
if isinstance(color, tuple): if isinstance(color, tuple):
color = palette.getcolor(color) color = palette.getcolor(color)
else: else: