mirror of
https://github.com/python-pillow/Pillow.git
synced 2024-11-10 19:56:47 +03:00
4de5477b61
With the introduction and use of pytest, it is simple and easy to
execute specific tests in isolation through documented command line
arguments. Either by specifying the module path or through the `-k
EXPRESSION` argument. There is no longer any need to provide the
boilerplate:
if __name__ == '__main__':
unittest.main()
To every test file. It is simply noise.
The pattern remains in test files that aren't named with `test_*` as
those files are not discovered and executed by pytest by default.
110 lines
3.8 KiB
Python
110 lines
3.8 KiB
Python
from .helper import PillowTestCase, hopper
|
|
from PIL import Image, ImageWin
|
|
|
|
import sys
|
|
import ctypes
|
|
from io import BytesIO
|
|
|
|
# see https://github.com/python-pillow/Pillow/pull/1431#issuecomment-144692652
|
|
|
|
if sys.platform.startswith('win32'):
|
|
import ctypes.wintypes
|
|
|
|
class BITMAPFILEHEADER(ctypes.Structure):
|
|
_pack_ = 2
|
|
_fields_ = [
|
|
('bfType', ctypes.wintypes.WORD),
|
|
('bfSize', ctypes.wintypes.DWORD),
|
|
('bfReserved1', ctypes.wintypes.WORD),
|
|
('bfReserved2', ctypes.wintypes.WORD),
|
|
('bfOffBits', ctypes.wintypes.DWORD),
|
|
]
|
|
|
|
class BITMAPINFOHEADER(ctypes.Structure):
|
|
_pack_ = 2
|
|
_fields_ = [
|
|
('biSize', ctypes.wintypes.DWORD),
|
|
('biWidth', ctypes.wintypes.LONG),
|
|
('biHeight', ctypes.wintypes.LONG),
|
|
('biPlanes', ctypes.wintypes.WORD),
|
|
('biBitCount', ctypes.wintypes.WORD),
|
|
('biCompression', ctypes.wintypes.DWORD),
|
|
('biSizeImage', ctypes.wintypes.DWORD),
|
|
('biXPelsPerMeter', ctypes.wintypes.LONG),
|
|
('biYPelsPerMeter', ctypes.wintypes.LONG),
|
|
('biClrUsed', ctypes.wintypes.DWORD),
|
|
('biClrImportant', ctypes.wintypes.DWORD),
|
|
]
|
|
|
|
BI_RGB = 0
|
|
DIB_RGB_COLORS = 0
|
|
|
|
memcpy = ctypes.cdll.msvcrt.memcpy
|
|
memcpy.argtypes = [ctypes.c_void_p, ctypes.c_void_p, ctypes.c_size_t]
|
|
|
|
CreateCompatibleDC = ctypes.windll.gdi32.CreateCompatibleDC
|
|
CreateCompatibleDC.argtypes = [ctypes.wintypes.HDC]
|
|
CreateCompatibleDC.restype = ctypes.wintypes.HDC
|
|
|
|
DeleteDC = ctypes.windll.gdi32.DeleteDC
|
|
DeleteDC.argtypes = [ctypes.wintypes.HDC]
|
|
|
|
SelectObject = ctypes.windll.gdi32.SelectObject
|
|
SelectObject.argtypes = [ctypes.wintypes.HDC, ctypes.wintypes.HGDIOBJ]
|
|
SelectObject.restype = ctypes.wintypes.HGDIOBJ
|
|
|
|
DeleteObject = ctypes.windll.gdi32.DeleteObject
|
|
DeleteObject.argtypes = [ctypes.wintypes.HGDIOBJ]
|
|
|
|
CreateDIBSection = ctypes.windll.gdi32.CreateDIBSection
|
|
CreateDIBSection.argtypes = [ctypes.wintypes.HDC, ctypes.c_void_p,
|
|
ctypes.c_uint,
|
|
ctypes.POINTER(ctypes.c_void_p),
|
|
ctypes.wintypes.HANDLE, ctypes.wintypes.DWORD]
|
|
CreateDIBSection.restype = ctypes.wintypes.HBITMAP
|
|
|
|
def serialize_dib(bi, pixels):
|
|
bf = BITMAPFILEHEADER()
|
|
bf.bfType = 0x4d42
|
|
bf.bfOffBits = ctypes.sizeof(bf) + bi.biSize
|
|
bf.bfSize = bf.bfOffBits + bi.biSizeImage
|
|
bf.bfReserved1 = bf.bfReserved2 = 0
|
|
|
|
buf = (ctypes.c_byte * bf.bfSize)()
|
|
bp = ctypes.addressof(buf)
|
|
memcpy(bp, ctypes.byref(bf), ctypes.sizeof(bf))
|
|
memcpy(bp + ctypes.sizeof(bf), ctypes.byref(bi), bi.biSize)
|
|
memcpy(bp + bf.bfOffBits, pixels, bi.biSizeImage)
|
|
return bytearray(buf)
|
|
|
|
class TestImageWinPointers(PillowTestCase):
|
|
def test_pointer(self):
|
|
im = hopper()
|
|
(width, height) = im.size
|
|
opath = self.tempfile('temp.png')
|
|
imdib = ImageWin.Dib(im)
|
|
|
|
hdr = BITMAPINFOHEADER()
|
|
hdr.biSize = ctypes.sizeof(hdr)
|
|
hdr.biWidth = width
|
|
hdr.biHeight = height
|
|
hdr.biPlanes = 1
|
|
hdr.biBitCount = 32
|
|
hdr.biCompression = BI_RGB
|
|
hdr.biSizeImage = width * height * 4
|
|
hdr.biClrUsed = 0
|
|
hdr.biClrImportant = 0
|
|
|
|
hdc = CreateCompatibleDC(None)
|
|
pixels = ctypes.c_void_p()
|
|
dib = CreateDIBSection(hdc, ctypes.byref(hdr), DIB_RGB_COLORS,
|
|
ctypes.byref(pixels), None, 0)
|
|
SelectObject(hdc, dib)
|
|
|
|
imdib.expose(hdc)
|
|
bitmap = serialize_dib(hdr, pixels)
|
|
DeleteObject(dib)
|
|
DeleteDC(hdc)
|
|
|
|
Image.open(BytesIO(bitmap)).save(opath)
|