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# Copyright 2010 Lars Wirzenius
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import time
import ttystatus
class RemainingTime(ttystatus.Widget):
'''Display an estimate of the remaining time.'''
def __init__(self, done_name, total_name):
self.done_name = done_name
self.total_name = total_name
self.started = None
self.default = '--h--m--s'
self.value = self.default
def get_time(self): # pragma: no cover
'''Return current time.
This is just a wrapper around time.time() so that it is easier
to override during unit tests.
'''
return time.time()
def format(self, secs):
hours = secs / (60 * 60)
secs %= (60 * 60)
mins = secs / 60
secs %= 60
return '%02dh%02dm%02ds' % (hours, mins, secs)
def update(self, master, width):
if self.started is None:
self.started = self.get_time()
duration = self.get_time() - self.started
if duration >= 1.0:
done = float(master.get(self.done_name, 0) or 0)
total = float(master.get(self.total_name, 0) or 0)
speed = done / duration
remaining = total - done
if speed > 0:
secs = remaining / speed
self.value = self.format(secs)
else:
self.value = self.default
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