def __init__(self):
"""
constructor
"""
self._image = None
self.tempfile = os.path.join(tempfile.gettempdir(), str(os.getpid()) + ".png")
self.selector = Slop()
class Scrot(Screenshooter):
"""
Python class wrapper for the scrot screenshooter utility
"""
def __init__(self):
"""
constructor
"""
self._image = None
self.tempfile = os.path.join(
tempfile.gettempdir(),
str(os.getpid()) + ".png"
)
self.selector = Slop()
def grab_fullscreen(self, delay=0):
"""
Takes a screenshot of the full screen with a given delay
Parameters:
int delay, in seconds
"""
self._call_scrot(['-d', str(delay)])
def grab_selection(self, delay=0):
"""
Takes an interactive screenshot of a selected area with a
given delay. This attempts to use slop to select an
area rather than using scrot's builtin selection as
scrot's builtin selection does not work well, but will
fall back on scrot's if slop is not available.
Parameters:
int delay: seconds
"""
try:
crop_box = self.selector.region_select()
if crop_box is not None:
self._call_scrot(['-d', str(delay)])
self._image = self._image.crop(crop_box)
except OSError:
self._call_scrot(['-d', str(delay), '-s'])
def grab_window(self, delay=0):
"""
Takes an interactive screenshot of a selected window with a
given delay
Parameters:
int delay: seconds
"""
self.grab_selection(delay)
def _call_scrot(self, params=None):
"""
Performs a subprocess call to scrot with a given list of
parameters.
Parameters:
array[string]
"""
# This is safer than passing an empty
# list as a default value
if params is None:
params = []
params = ['scrot', '-z', self.tempfile] + params
try:
subprocess.check_output(params)
self._image = PIL.Image.open(self.tempfile)
os.unlink(self.tempfile)
except subprocess.CalledProcessError:
pass
def __init__(self):
"""
constructor
"""
Screenshooter.__init__(self)
self.selector = Slop()