def test_itxt_compressed():
chunk_type, data = make_text_chunk(type="iTXt", value=u"ＳＯＭＥ ＴＥＸＴ", compression_flag=1)
assert chunk_type == "iTXt"
assert data == make_chunk(
"iTXt",
b"Comment\0\1\0\0\0" +
zlib.compress(u"ＳＯＭＥ ＴＥＸＴ".encode("utf-8")))
def test_itxt_compressed():
chunk_type, data = make_text_chunk(type="iTXt",
value=u"ＳＯＭＥ ＴＥＸＴ",
compression_flag=1)
assert chunk_type == "iTXt"
assert data == make_chunk(
"iTXt",
b"Comment\0\1\0\0\0" + zlib.compress(u"ＳＯＭＥ ＴＥＸＴ".encode("utf-8")))
def test_itxt_compressed(self):
import zlib
from apng import make_text_chunk, make_chunk
chunk_type, data = make_text_chunk(type="iTXt", value=u"ＳＯＭＥ ＴＥＸＴ", compression_flag=1)
self.assertEqual(chunk_type, "iTXt")
self.assertEqual(
data,
make_chunk(
"iTXt",
b"Comment\0\1\0\0\0" +
zlib.compress(u"ＳＯＭＥ ＴＥＸＴ".encode("utf-8"))
)
)
def test_ztxt():
chunk_type, data = make_text_chunk(type="zTXt", value="some text")
assert chunk_type == "zTXt"
assert data == make_chunk("zTXt", b"Comment\0\0" + zlib.compress(b"some text"))
def test_text():
chunk_type, data = make_text_chunk(value="some text")
assert chunk_type == "tEXt"
assert data == make_chunk("tEXt", b"Comment\0some text")
def test_itxt():
chunk_type, data = make_text_chunk(type="iTXt", value=u"ＳＯＭＥ ＴＥＸＴ")
assert chunk_type == "iTXt"
assert data == make_chunk("iTXt", b"Comment\0\0\0\0\0" + u"ＳＯＭＥ ＴＥＸＴ".encode("utf-8"))
from struct import pack, unpack
# patch the buggy picture sizes
def fix(w, h, i):
if w == 1280:
w, h = 180, 75
if w > 200:
w //= 10
if h > 100:
h //= 10
if i == 17:
w, h = 180, 73
return w, h
im = apng.APNG.open("p1ng")
i = 0
for png, control in im.frames:
w, h = unpack(">I", png.chunks[0][1][8:12])[0], unpack(
">I", png.chunks[0][1][12:16])[0]
w, h = fix(w, h, i)
png.chunks[0] = ('IHDR',
apng.make_chunk(
"IHDR",
pack(">I", w) + pack(">I", h) +
b'\x08\x06\x00\x00\x00'))
png.save("%02d.png" % i)
i += 1
def test_itxt(self):
from apng import make_text_chunk, make_chunk
chunk_type, data = make_text_chunk(type="iTXt", value=u"ＳＯＭＥ ＴＥＸＴ")
self.assertEqual(chunk_type, "iTXt")
self.assertEqual(data, make_chunk("iTXt", b"Comment\0\0\0\0\0" + u"ＳＯＭＥ ＴＥＸＴ".encode("utf-8")))
def test_ztxt(self):
import zlib
from apng import make_text_chunk, make_chunk
chunk_type, data = make_text_chunk(type="zTXt", value="some text")
self.assertEqual(chunk_type, "zTXt")
self.assertEqual(data, make_chunk("zTXt", b"Comment\0\0" + zlib.compress(b"some text")))
def test_text(self):
from apng import make_text_chunk, make_chunk
chunk_type, data = make_text_chunk(value="some text")
self.assertEqual(chunk_type, "tEXt")
self.assertEqual(data, make_chunk("tEXt", b"Comment\0some text"))
def test_text():
chunk_type, data = make_text_chunk(value="some text")
assert chunk_type == "tEXt"
assert data == make_chunk("tEXt", b"Comment\0some text")
def test_itxt():
chunk_type, data = make_text_chunk(type="iTXt", value=u"ＳＯＭＥ ＴＥＸＴ")
assert chunk_type == "iTXt"
assert data == make_chunk(
"iTXt", b"Comment\0\0\0\0\0" + u"ＳＯＭＥ ＴＥＸＴ".encode("utf-8"))
def test_ztxt():
chunk_type, data = make_text_chunk(type="zTXt", value="some text")
assert chunk_type == "zTXt"
assert data == make_chunk("zTXt",
b"Comment\0\0" + zlib.compress(b"some text"))