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|
###############################################################################
#
# file: clock.py
#
# Purpose: refer to python doc for documentation details.
#
# Note: This file is part of Termsaver application, and should not be used
# or executed separately.
#
###############################################################################
#
# Copyright 2012 Termsaver
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
#
###############################################################################
"""
This module contains a simple screen that displays current time on terminal.
See additional information in the class itself.
The screen class available here is:
* `ClockScreen`
"""
#
# Python mobdules
#
import datetime
import time
#
# Internal modules
#
from termsaverlib.screen.base import ScreenBase
from termsaverlib.screen.helper.position import PositionHelperBase
from termsaverlib import common
from termsaverlib.i18n import _
class ClockScreen(ScreenBase, PositionHelperBase):
"""
Simple screen that displays the time on the terminal window.
The ascii font used was retrieved from Figlet application
(http://www.figlet.org/).
From its base classes, the functionality provided here bases on the
settings defined below:
* clean up each cycle: True
this will force the screen to be cleaned (cleared) before each new
cycle is displayed
"""
digmap = {
'0': ' ___ \n / _ \ \n| | | |\n| |_| |\n \___/ \n',
'1': ' _ \n / | \n | | \n | | \n |_| \n',
'2': ' ____ \n|___ \ \n __) \n / __/ \n|_____|\n',
'3': ' _____ \n|___ / \n |_ \ \n ___) |\n|____/ \n',
'4': ' _ _ \n| || | \n| || | \n|__ | \n |_| \n',
'5': ' ____ \n| ___| \n|___ \ \n ___) |\n|____/ \n',
'6': ' __ \n / /_ \n| \'_ \ \n| (_) |\n \___/ \n',
'7': ' _____ \n|___ |\n / / \n / / \n /_/ \n',
'8': ' ___ \n ( _ ) \n / _ \ \n| (_) |\n \___/ \n',
'9': ' ___ \n / _ \ \n| (_) |\n \__, |\n /_/ \n',
':': ' \n _ \n (_) \n _ \n (_) \n',
}
"""
Holds the ascii characters to be used by this screen. It is the
simplification of:
___ _ ____ _____ _ _ ____ __ _____ ___ ___
/ _ \ / ||___ \ |___ / | || | | ___| / /_ |___ | ( _ ) / _ \ _
| | | || | __) | |_ \ | || |_ |___ \ | '_ \ / / / _ \ | (_) |(_)
| |_| || | / __/ ___) |__ _| ___) || (_) | / / | (_) | \__, | _
\___/ |_||_____||____/ |_| |____/ \___/ /_/ \___/ /_/ (_)
Extracted from standard font of Figlet (http://www.figlet.org/)
"""
def __init__(self):
"""
The constructor of this class.
"""
ScreenBase.__init__(self,
"clock",
_("displays a digital clock on screen"),
{'opts': 'h', 'long_opts': ['help']},
)
self.cleanup_per_cycle = True
def _run_cycle(self):
"""
Executes a cycle of this screen.
"""
# calculate random position based on screen size
self.get_terminal_size()
date_time = datetime.datetime.now()
text = """
%s
%s
""" % (
date_time.strftime('%A, %%d%%s %B %Y') % (date_time.day,
common.get_day_suffix(date_time.day)),
self.get_ascii_time(date_time),
)
text = self.center_text_horizontally(text)
text = self.center_text_vertically(text)
print text
time.sleep(1)
def _usage_options_example(self):
"""
Describe here the options and examples of this screen.
The method `_parse_args` will be handling the parsing of the options
documented here.
Additionally, this is dependent on the values exposed in `cli_opts`,
passed to this class during its instantiation. Only values properly
configured there will be accepted here.
"""
print _("""
Options:
-h, --help Displays this help message
""")
def _parse_args(self, prepared_args):
"""
Handles the special command-line arguments available for this screen.
Although this is a base screen, having these options prepared here
can save coding for screens that will not change the default options.
See `_usage_options_example` method for documentation on each of the
options being parsed here.
Additionally, this is dependent on the values exposed in `cli_opts`,
passed to this class during its instantiation. Only values properly
configured there will be accepted here.
"""
for o, __ in prepared_args[0]: # optlist, args
if o in ("-h", "--help"):
self.usage()
self.screen_exit()
else:
# this should never happen!
raise Exception(_("Unhandled option. See --help for details."))
def get_ascii_time(self, date_time):
"""
Returns the ASCII representation of a date.
"""
clock = date_time.strftime('%H:%M:%S')
items = []
for c in clock:
items.append(self.digmap[c])
output = ''
for i in range(5): # loop lines of chars
temp = ''
for item in items:
temp += item.split('\n')[i]
output += temp + '\n'
return output
|
