def rgb_to_bitmap(rgb_data, bytes_per_pixel: int, w: int, h: int):
log("rgb_to_bitmap%s", (rgb_data, bytes_per_pixel, w, h))
assert bytes_per_pixel in (3, 4) #only BGRA or BGR are supported
assert w > 0 and h > 0
header = BITMAPV5HEADER()
header.bV5Size = sizeof(BITMAPV5HEADER)
header.bV5Width = w
header.bV5Height = -h
header.bV5Planes = 1
header.bV5BitCount = bytes_per_pixel * 8
header.bV5Compression = BI_RGB #BI_BITFIELDS
#header.bV5RedMask = 0x000000ff
#header.bV5GreenMask = 0x0000ff00
#header.bV5BlueMask = 0x00ff0000
#header.bV5AlphaMask = 0xff000000
bitmap = 0
try:
hdc = GetDC(None)
dataptr = c_void_p()
log("GetDC()=%#x", hdc)
bitmap = CreateDIBSection(hdc, byref(header), win32con.DIB_RGB_COLORS,
byref(dataptr), None, 0)
finally:
ReleaseDC(None, hdc)
if not dataptr or not bitmap:
raise ctypes.WinError(ctypes.get_last_error())
log("CreateDIBSection(..) got bitmap=%#x, dataptr=%s", int(bitmap),
dataptr)
img_data = create_string_buffer(rgb_data)
ctypes.memmove(dataptr, byref(img_data), w * h * bytes_per_pixel)
return bitmap
def rgba_to_bitmap(rgba, w, h):
header = BITMAPV5HEADER()
header.bV5Size = sizeof(BITMAPV5HEADER)
header.bV5Width = w
header.bV5Height = -h
header.bV5Planes = 1
header.bV5BitCount = 32
header.bV5Compression = BI_RGB #BI_BITFIELDS
#header.bV5RedMask = 0x000000ff
#header.bV5GreenMask = 0x0000ff00
#header.bV5BlueMask = 0x00ff0000
#header.bV5AlphaMask = 0xff000000
bitmap = 0
try:
hdc = GetDC(None)
dataptr = c_void_p()
log("GetDC()=%#x", hdc)
bitmap = CreateDIBSection(hdc, byref(header), win32con.DIB_RGB_COLORS,
byref(dataptr), None, 0)
finally:
ReleaseDC(None, hdc)
assert dataptr and bitmap, "failed to create DIB section"
log("CreateDIBSection(..) got bitmap=%#x, dataptr=%s", int(bitmap),
dataptr)
img_data = create_string_buffer(rgba)
ctypes.memmove(dataptr, byref(img_data), w * 4 * h)
return bitmap
def get_desktop_bit_depth():
desktop_wnd = GetDesktopWindow()
dc = GetWindowDC(desktop_wnd)
assert dc, "failed to get a drawing context from the desktop window %s" % desktop_wnd
bit_depth = GetDeviceCaps(dc, win32con.BITSPIXEL)
log("get_desktop_bit_depth()=%i", bit_depth)
ReleaseDC(desktop_wnd, dc)
return bit_depth
def _get_device_caps(constant):
dc = None
try:
dc = GetDC(None)
return GetDeviceCaps(dc, constant)
finally:
if dc:
ReleaseDC(None, dc)
def set_clipboard_image(self, img_format, img_data):
image_formats = {}
if COMPRESSED_IMAGES:
#first save it as binary compressed data:
fmt_name = LPCSTR(img_format.upper().encode("latin1")+b"\0") #ie: "PNG"
fmt = RegisterClipboardFormatA(fmt_name)
if fmt:
buf = create_string_buffer(img_data)
pbuf = cast(byref(buf), c_void_p)
l = len(img_data)
data_handle = GlobalAlloc(GMEM_MOVEABLE, l)
if not data_handle:
log.error("Error: failed to allocate %i bytes of global memory", l)
return True
data = GlobalLock(data_handle)
if not data:
log("failed to lock data handle %#x (may try again)", data_handle)
return False
log("got data handle lock %#x for %i bytes of '%s' data", data, l, img_format)
try:
memmove(data, pbuf, l)
finally:
GlobalUnlock(data)
image_formats[fmt] = data_handle
#also convert it to a bitmap:
from PIL import Image
buf = BytesIO(img_data)
img = Image.open(buf)
if img.mode!="RGBA":
img = img.convert("RGBA")
rgb_data = img.tobytes("raw", "BGRA")
w, h = img.size
log("set_clipboard_image(%s, %s) image size=%s, BGR buffer=%i bytes",
img_format, ellipsizer(data), img.size, len(rgb_data))
header = BITMAPINFOHEADER()
memset(byref(header), 0, sizeof(BITMAPINFOHEADER ))
header.biSize = sizeof(BITMAPINFOHEADER)
header.biWidth = w
header.biHeight = -h
header.biPlanes = 1
header.biBitCount = 32
header.biCompression = BI_RGB
header.biSizeImage = 0
header.biXPelsPerMeter = 10
header.biYPelsPerMeter = 10
bitmapinfo = BITMAPINFO()
bitmapinfo.bmiColors = 0
memmove(byref(bitmapinfo.bmiHeader), byref(header), sizeof(BITMAPINFOHEADER))
rgb_buf = create_string_buffer(rgb_data)
pbuf = cast(byref(rgb_buf), c_void_p)
hdc = GetDC(None)
CBM_INIT = 4
bitmap = CreateDIBitmap(hdc, byref(header), CBM_INIT, pbuf, byref(bitmapinfo), win32con.DIB_RGB_COLORS)
ReleaseDC(None, hdc)
image_formats[win32con.CF_BITMAP] = bitmap
self.do_set_clipboard_image(image_formats)
def clean_dc(self):
dc = self.dc
wnd = self.wnd
if dc and wnd:
self.dc = None
self.wnd = None
ReleaseDC(wnd, dc)
memdc = self.memdc
if memdc:
self.memdc = None
DeleteDC(memdc)
def cleanup(self):
if self.disabled_dwm_composition:
set_dwm_composition(DWM_EC_ENABLECOMPOSITION)
dc = self.dc
if dc:
self.dc = None
ReleaseDC(dc)
memdc = self.memdc
if memdc:
self.memdc = None
DeleteDC(memdc)
def clean(self):
if self.disabled_dwm_composition:
set_dwm_composition(DWM_EC_ENABLECOMPOSITION)
dc = self.dc
wnd = self.wnd
if dc and wnd:
self.dc = None
self.wnd = None
ReleaseDC(wnd, dc)
memdc = self.memdc
if memdc:
self.memdc = None
DeleteDC(memdc)
def get_cursor_data(hCursor):
#w, h = get_fixed_cursor_size()
if not hCursor:
return None
x, y = 0, 0
dc = None
memdc = None
bitmap = None
old_handle = None
pixels = None
try:
ii = ICONINFO()
ii.cbSize = sizeof(ICONINFO)
if not GetIconInfo(hCursor, byref(ii)):
raise WindowsError() #@UndefinedVariable
x = ii.xHotspot
y = ii.yHotspot
cursorlog(
"get_cursor_data(%#x) hotspot at %ix%i, hbmColor=%#x, hbmMask=%#x",
hCursor, x, y, ii.hbmColor or 0, ii.hbmMask or 0)
if not ii.hbmColor:
#FIXME: we don't handle black and white cursors
return None
iie = ICONINFOEXW()
iie.cbSize = sizeof(ICONINFOEXW)
if not GetIconInfoExW(hCursor, byref(iie)):
raise WindowsError() #@UndefinedVariable
name = iie.szResName[:MAX_PATH]
cursorlog("wResID=%#x, sxModName=%s, szResName=%s", iie.wResID,
iie.sxModName[:MAX_PATH], name)
bm = Bitmap()
if not GetObjectA(ii.hbmColor, sizeof(Bitmap), byref(bm)):
raise WindowsError() #@UndefinedVariable
cursorlog(
"cursor bitmap: type=%i, width=%i, height=%i, width bytes=%i, planes=%i, bits pixel=%i, bits=%#x",
bm.bmType, bm.bmWidth, bm.bmHeight, bm.bmWidthBytes, bm.bmPlanes,
bm.bmBitsPixel, bm.bmBits or 0)
w = bm.bmWidth
h = bm.bmHeight
dc = GetDC(None)
assert dc, "failed to get a drawing context"
memdc = CreateCompatibleDC(dc)
assert memdc, "failed to get a compatible drawing context from %s" % dc
bitmap = CreateCompatibleBitmap(dc, w, h)
assert bitmap, "failed to get a compatible bitmap from %s" % dc
old_handle = SelectObject(memdc, bitmap)
#check if icon is animated:
UINT_MAX = 2**32 - 1
if not DrawIconEx(memdc, 0, 0, hCursor, w, h, UINT_MAX, 0, 0):
cursorlog("cursor is animated!")
#if not DrawIcon(memdc, 0, 0, hCursor):
if not DrawIconEx(memdc, 0, 0, hCursor, w, h, 0, 0,
win32con.DI_NORMAL):
raise WindowsError() #@UndefinedVariable
buf_size = bm.bmWidthBytes * h
buf = create_string_buffer(b"", buf_size)
r = GetBitmapBits(bitmap, buf_size, byref(buf))
cursorlog("get_cursor_data(%#x) GetBitmapBits(%#x, %#x, %#x)=%i",
hCursor, bitmap, buf_size, addressof(buf), r)
if not r:
cursorlog.error("Error: failed to copy screen bitmap data")
return None
elif r != buf_size:
cursorlog.warn(
"Warning: invalid cursor buffer size, got %i bytes but expected %i",
r, buf_size)
return None
else:
#32-bit data:
pixels = bytearray(strtobytes(buf.raw))
has_alpha = False
has_pixels = False
for i in range(len(pixels) // 4):
has_pixels = has_pixels or pixels[i * 4] != 0 or pixels[
i * 4 + 1] != 0 or pixels[i * 4 + 2] != 0
has_alpha = has_alpha or pixels[i * 4 + 3] != 0
if has_pixels and has_alpha:
break
if has_pixels and not has_alpha:
#generate missing alpha - don't ask me why
for i in range(len(pixels) // 4):
if pixels[i * 4] != 0 or pixels[i * 4 +
1] != 0 or pixels[i * 4 +
2] != 0:
pixels[i * 4 + 3] = 0xff
return [0, 0, w, h, x, y, hCursor, bytes(pixels), strtobytes(name)]
except Exception as e:
cursorlog("get_cursor_data(%#x)", hCursor, exc_info=True)
cursorlog.error("Error: failed to grab cursor:")
cursorlog.error(" %s", str(e) or type(e))
return None
finally:
if old_handle:
SelectObject(memdc, old_handle)
if bitmap:
DeleteObject(bitmap)
if memdc:
DeleteDC(memdc)
if dc:
ReleaseDC(None, dc)
