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prefer screenshots using XCB over gnome-screenshot

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nulano 2023-05-08 22:30:11 +01:00
parent 2a274a4760
commit bb18abc603
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2 changed files with 16 additions and 12 deletions
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5
docs/reference/ImageGrab.rst
View File

@ -15,8 +15,9 @@ or the clipboard to a PIL image memory.
returned as an "RGBA" on macOS, or an "RGB" image otherwise.
If the bounding box is omitted, the entire screen is copied.
On Linux, if ``xdisplay`` is ``None`` then ``gnome-screenshot`` will be used if it
is installed. To capture the default X11 display instead, pass ``xdisplay=""``.
On Linux, if ``xdisplay`` is ``None`` and the default X11 display does not return
a snapshot of the screen, ``gnome-screenshot`` will be used as fallback if it is
installed. To disable this behaviour, pass ``xdisplay=""`` instead.
.. versionadded:: 1.1.3 (Windows), 3.0.0 (macOS), 7.1.0 (Linux)

23
src/PIL/ImageGrab.py
View File

@ -61,7 +61,17 @@ def grab(bbox=None, include_layered_windows=False, all_screens=False, xdisplay=N
left, top, right, bottom = bbox
im = im.crop((left - x0, top - y0, right - x0, bottom - y0))
return im
elif shutil.which("gnome-screenshot"):
try:
if not Image.core.HAVE_XCB:
msg = "Pillow was built without XCB support"
raise OSError(msg)
size, data = Image.core.grabscreen_x11(xdisplay)
im = Image.frombytes("RGB", size, data, "raw", "BGRX", size[0] * 4, 1)
if bbox:
im = im.crop(bbox)
return im
except OSError:
if xdisplay is None and shutil.which("gnome-screenshot"):
fh, filepath = tempfile.mkstemp(".png")
os.close(fh)
subprocess.call(["gnome-screenshot", "-f", filepath])
@ -73,15 +83,8 @@ def grab(bbox=None, include_layered_windows=False, all_screens=False, xdisplay=N
im.close()
return im_cropped
return im
# use xdisplay=None for default display on non-win32/macOS systems
if not Image.core.HAVE_XCB:
msg = "Pillow was built without XCB support"
raise OSError(msg)
size, data = Image.core.grabscreen_x11(xdisplay)
im = Image.frombytes("RGB", size, data, "raw", "BGRX", size[0] * 4, 1)
if bbox:
im = im.crop(bbox)
return im
else:
raise
def grabclipboard():