python-pillow/Pillow
1
1
Fork 0
mirror of https://github.com/python-pillow/Pillow.git synced 2025-01-13 02:36:17 +03:00
Code Issues Packages Projects Releases Wiki Activity

Allow putpalette for LA and PA

Browse Source
This commit is contained in:
Andrew Murray 2019-03-20 08:13:56 +11:00
parent 819b8acd26
commit dba38912fb
3 changed files with 12 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
Tests/test_image_putpalette.py
View File

@ -14,8 +14,10 @@ class TestImagePutPalette(PillowTestCase):
return im.mode, p[:10]
return im.mode
self.assertRaises(ValueError, palette, "1")
self.assertEqual(palette("L"), ("P", [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]))
self.assertEqual(palette("P"), ("P", [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]))
for mode in ["L", "LA", "P", "PA"]:
self.assertEqual(palette(mode),
("PA" if "A" in mode else "P",
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]))
self.assertRaises(ValueError, palette, "I")
self.assertRaises(ValueError, palette, "F")
self.assertRaises(ValueError, palette, "RGB")

12
src/PIL/Image.py
View File

@ -1619,10 +1619,10 @@ class Image(object):
def putpalette(self, data, rawmode="RGB"):
"""
Attaches a palette to this image. The image must be a "P" or
"L" image, and the palette sequence must contain 768 integer
values, where each group of three values represent the red,
green, and blue values for the corresponding pixel
Attaches a palette to this image. The image must be a "P",
"PA", "L" or "LA" image, and the palette sequence must contain
768 integer values, where each group of three values represent
the red, green, and blue values for the corresponding pixel
index. Instead of an integer sequence, you can use an 8-bit
string.
@ -1631,7 +1631,7 @@ class Image(object):
"""
from . import ImagePalette
if self.mode not in ("L", "P"):
if self.mode not in ("L", "LA", "P", "PA"):
raise ValueError("illegal image mode")
self.load()
if isinstance(data, ImagePalette.ImagePalette):
@ -1643,7 +1643,7 @@ class Image(object):
else:
data = "".join(chr(x) for x in data)
palette = ImagePalette.raw(rawmode, data)
self.mode = "P"
self.mode = "PA" if "A" in self.mode else "P"
self.palette = palette
self.palette.mode = "RGB"
self.load() # install new palette

3
src/_imaging.c
View File

@ -1569,7 +1569,8 @@ _putpalette(ImagingObject* self, PyObject* args)
if (!PyArg_ParseTuple(args, "s"PY_ARG_BYTES_LENGTH, &rawmode, &palette, &palettesize))
return NULL;
if (strcmp(self->image->mode, "L") != 0 && strcmp(self->image->mode, "P")) {
if (strcmp(self->image->mode, "L") && strcmp(self->image->mode, "LA") &&
strcmp(self->image->mode, "P") && strcmp(self->image->mode, "PA")) {
PyErr_SetString(PyExc_ValueError, wrong_mode);
return NULL;
}