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Direktori : /lib/python3/dist-packages/PIL/ |
Current File : //lib/python3/dist-packages/PIL/ImageGrab.py |
# # The Python Imaging Library # $Id$ # # screen grabber # # History: # 2001-04-26 fl created # 2001-09-17 fl use builtin driver, if present # 2002-11-19 fl added grabclipboard support # # Copyright (c) 2001-2002 by Secret Labs AB # Copyright (c) 2001-2002 by Fredrik Lundh # # See the README file for information on usage and redistribution. # from __future__ import annotations import io import os import shutil import subprocess import sys import tempfile from . import Image def grab(bbox=None, include_layered_windows=False, all_screens=False, xdisplay=None): if xdisplay is None: if sys.platform == "darwin": fh, filepath = tempfile.mkstemp(".png") os.close(fh) args = ["screencapture"] if bbox: left, top, right, bottom = bbox args += ["-R", f"{left},{top},{right-left},{bottom-top}"] subprocess.call(args + ["-x", filepath]) im = Image.open(filepath) im.load() os.unlink(filepath) if bbox: im_resized = im.resize((right - left, bottom - top)) im.close() return im_resized return im elif sys.platform == "win32": offset, size, data = Image.core.grabscreen_win32( include_layered_windows, all_screens ) im = Image.frombytes( "RGB", size, data, # RGB, 32-bit line padding, origin lower left corner "raw", "BGR", (size[0] * 3 + 3) & -4, -1, ) if bbox: x0, y0 = offset left, top, right, bottom = bbox im = im.crop((left - x0, top - y0, right - x0, bottom - y0)) return im try: if not Image.core.HAVE_XCB: msg = "Pillow was built without XCB support" raise OSError(msg) size, data = Image.core.grabscreen_x11(xdisplay) except OSError: if ( xdisplay is None and sys.platform not in ("darwin", "win32") and shutil.which("gnome-screenshot") ): fh, filepath = tempfile.mkstemp(".png") os.close(fh) subprocess.call(["gnome-screenshot", "-f", filepath]) im = Image.open(filepath) im.load() os.unlink(filepath) if bbox: im_cropped = im.crop(bbox) im.close() return im_cropped return im else: raise else: im = Image.frombytes("RGB", size, data, "raw", "BGRX", size[0] * 4, 1) if bbox: im = im.crop(bbox) return im def grabclipboard(): if sys.platform == "darwin": fh, filepath = tempfile.mkstemp(".png") os.close(fh) commands = [ 'set theFile to (open for access POSIX file "' + filepath + '" with write permission)', "try", " write (the clipboard as «class PNGf») to theFile", "end try", "close access theFile", ] script = ["osascript"] for command in commands: script += ["-e", command] subprocess.call(script) im = None if os.stat(filepath).st_size != 0: im = Image.open(filepath) im.load() os.unlink(filepath) return im elif sys.platform == "win32": fmt, data = Image.core.grabclipboard_win32() if fmt == "file": # CF_HDROP import struct o = struct.unpack_from("I", data)[0] if data[16] != 0: files = data[o:].decode("utf-16le").split("\0") else: files = data[o:].decode("mbcs").split("\0") return files[: files.index("")] if isinstance(data, bytes): data = io.BytesIO(data) if fmt == "png": from . import PngImagePlugin return PngImagePlugin.PngImageFile(data) elif fmt == "DIB": from . import BmpImagePlugin return BmpImagePlugin.DibImageFile(data) return None else: if os.getenv("WAYLAND_DISPLAY"): session_type = "wayland" elif os.getenv("DISPLAY"): session_type = "x11" else: # Session type check failed session_type = None if shutil.which("wl-paste") and session_type in ("wayland", None): output = subprocess.check_output(["wl-paste", "-l"]).decode() mimetypes = output.splitlines() if "image/png" in mimetypes: mimetype = "image/png" elif mimetypes: mimetype = mimetypes[0] else: mimetype = None args = ["wl-paste"] if mimetype: args.extend(["-t", mimetype]) elif shutil.which("xclip") and session_type in ("x11", None): args = ["xclip", "-selection", "clipboard", "-t", "image/png", "-o"] else: msg = "wl-paste or xclip is required for ImageGrab.grabclipboard() on Linux" raise NotImplementedError(msg) p = subprocess.run(args, capture_output=True) err = p.stderr if err: msg = f"{args[0]} error: {err.strip().decode()}" raise ChildProcessError(msg) data = io.BytesIO(p.stdout) im = Image.open(data) im.load() return im