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# -*- coding: utf-8 -*-
#
# This file is part of Glances.
#
# Copyright (C) 2019 Nicolargo <nicolas@nicolargo.com>
#
# Glances is free software; you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Glances is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""Manage bars for Glances output."""
from __future__ import division
from math import modf
class Bar(object):
r"""Manage bar (progression or status).
import sys
import time
b = Bar(10)
for p in range(0, 100):
b.percent = p
print("\r%s" % b),
time.sleep(0.1)
sys.stdout.flush()
"""
def __init__(self, size,
percentage_char='|', empty_char=' ',
pre_char='[', post_char=']',
with_text=True):
# Build curses_bars
self.__curses_bars = [empty_char] * 5 + [percentage_char] * 5
# Bar size
self.__size = size
# Bar current percent
self.__percent = 0
# Min and max value
self.min_value = 0
self.max_value = 100
# Char used for the decoration
self.__pre_char = pre_char
self.__post_char = post_char
self.__empty_char = empty_char
self.__with_text = with_text
@property
def size(self, with_decoration=False):
# Return the bar size, with or without decoration
if with_decoration:
return self.__size
if self.__with_text:
return self.__size - 6
@property
def percent(self):
return self.__percent
@percent.setter
def percent(self, value):
if value <= self.min_value:
value = self.min_value
if value >= self.max_value:
value = self.max_value
self.__percent = value
@property
def pre_char(self):
return self.__pre_char
@property
def post_char(self):
return self.__post_char
def get(self):
"""Return the bars."""
frac, whole = modf(self.size * self.percent / 100.0)
ret = self.__curses_bars[8] * int(whole)
if frac > 0:
ret += self.__curses_bars[int(frac * 8)]
whole += 1
ret += self.__empty_char * int(self.size - whole)
if self.__with_text:
ret = '{}{:5.1f}%'.format(ret, self.percent)
return ret
def __str__(self):
"""Return the bars."""
return self.get()
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