def __init__(self, name='default', max_pages=-1):
self._conn = cups.Connection() if cups else None
self._notifier = Subscriber(self._conn) if cups else None
self.name = None
self.max_pages = max_pages
self.nbr_printed = 0
if not cups:
LOGGER.warning(
"No printer found (pycups or pycups-notify not installed)")
return # CUPS is not installed
elif not name or name.lower() == 'default':
self.name = self._conn.getDefault()
if not self.name and self._conn.getPrinters():
self.name = list(
self._conn.getPrinters().keys())[0] # Take first one
elif name in self._conn.getPrinters():
self.name = name
if not self.name:
if name.lower() == 'default':
LOGGER.warning(
"No printer configured in CUPS (see http://localhost:631)")
else:
LOGGER.warning(
"No printer named '%s' in CUPS (see http://localhost:631)",
name)
else:
LOGGER.info("Connected to printer '%s'", self.name)
def __init__(self,
name='default',
max_pages=-1,
options=None,
counters=None):
self._conn = cups.Connection() if cups else None
self._notifier = Subscriber(self._conn) if cups else None
self.name = None
self.max_pages = max_pages
self.options = options
self.count = counters
if not cups:
LOGGER.warning(
"No printer found (pycups or pycups-notify not installed)")
return # CUPS is not installed
if not name or name.lower() == 'default':
self.name = self._conn.getDefault()
if not self.name and self._conn.getPrinters():
self.name = list(
self._conn.getPrinters().keys())[0] # Take first one
elif name in self._conn.getPrinters():
self.name = name
if not self.name:
if name.lower() == 'default':
LOGGER.warning(
"No printer configured in CUPS (see http://localhost:631)")
else:
LOGGER.warning(
"No printer named '%s' in CUPS (see http://localhost:631)",
name)
else:
LOGGER.info("Connected to printer '%s'", self.name)
if self.options and not isinstance(self.options, dict):
LOGGER.warning("Invalid printer options '%s', dict is expected",
self.options)
self.options = {}
elif not self.options:
self.options = {}
class Printer(object):
def __init__(self, name='default', max_pages=-1):
self._conn = cups.Connection() if cups else None
self._notifier = Subscriber(self._conn) if cups else None
self.name = None
self.max_pages = max_pages
self.nbr_printed = 0
if not cups:
LOGGER.warning(
"No printer found (pycups or pycups-notify not installed)")
return # CUPS is not installed
elif not name or name.lower() == 'default':
self.name = self._conn.getDefault()
if not self.name and self._conn.getPrinters():
self.name = list(
self._conn.getPrinters().keys())[0] # Take first one
elif name in self._conn.getPrinters():
self.name = name
if not self.name:
if name.lower() == 'default':
LOGGER.warning(
"No printer configured in CUPS (see http://localhost:631)")
else:
LOGGER.warning(
"No printer named '%s' in CUPS (see http://localhost:631)",
name)
else:
LOGGER.info("Connected to printer '%s'", self.name)
def _on_event(self, evt):
"""
Call for each new printer event.
"""
LOGGER.info(evt.title)
pygame.event.post(
pygame.event.Event(PRINTER_TASKS_UPDATED,
tasks=self.get_all_tasks()))
def is_installed(self):
"""Return True if the CUPS server is available for printing.
"""
return cups is not None and self.name is not None
def is_available(self):
"""Return True is paper/ink counter is reached or printing is disabled.
"""
if not self.is_installed():
return False
if self.max_pages < 0: # No limit
return True
return self.nbr_printed < self.max_pages
def print_file(self, filename, copies=1):
"""Send a file to the CUPS server to the default printer.
"""
if not self.name:
raise EnvironmentError(
"No printer found (check config file or CUPS config)")
if not osp.isfile(filename):
raise IOError("No such file or directory: {}".format(filename))
if self._notifier and not self._notifier.is_subscribed(self._on_event):
self._notifier.subscribe(self._on_event, [
event.CUPS_EVT_JOB_COMPLETED, event.CUPS_EVT_JOB_CREATED,
event.CUPS_EVT_JOB_STOPPED,
event.CUPS_EVT_PRINTER_STATE_CHANGED,
event.CUPS_EVT_PRINTER_STOPPED
])
if copies > 1:
with tempfile.NamedTemporaryFile(
suffix=osp.basename(filename)) as fp:
picture = Image.open(filename)
factory = get_picture_factory((picture, ) * copies)
# Don't call setup factory hook here, as the selected parameters
# are the one necessary to render several pictures on same page.
factory.set_margin(2)
factory.save(fp.name)
self._conn.printFile(self.name, fp.name,
osp.basename(filename), {})
else:
self._conn.printFile(self.name, filename, osp.basename(filename),
{})
LOGGER.debug("File '%s' sent to the printer", filename)
self.nbr_printed += 1
def cancel_all_tasks(self):
"""Cancel all tasks in the queue.
"""
if not self.name:
raise EnvironmentError(
"No printer found (check config file or CUPS config)")
self._conn.cancelAllJobs(self.name)
def get_all_tasks(self):
"""Return a dict (indexed by job ID) of dicts representing all tasks
in the queue.
"""
if not self.name:
return {} # No printer found
return self._conn.getJobs(my_jobs=True,
requested_attributes=[
"job-id", "job-name", "job-uri",
"job-state"
])
def quit(self):
"""Do cleanup actions.
"""
if self._notifier:
self._notifier.unsubscribe_all()
import os
from cups import Connection
from cups_notify import Subscriber
cups = Connection()
notifier = Subscriber(cups)
printer = os.getenv('PRINTER')