Source code for pygal.graph.time

# -*- coding: utf-8 -*-
# This file is part of pygal
# A python svg graph plotting library
# Copyright © 2012-2016 Kozea
# This library 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.
# This library 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 pygal. If not, see <>.

XY time extensions: handle convertion of date, time, datetime, timedelta
into float for xy plot and back to their type for display

from datetime import date, datetime, time, timedelta

from pygal._compat import is_str, timestamp, total_seconds
from pygal.adapters import positive
from pygal.graph.xy import XY

[docs]def datetime_to_timestamp(x): """Convert a datetime into a utc float timestamp""" if isinstance(x, datetime): return timestamp(x) return x
[docs]def datetime_to_time(x): """Convert a datetime into a time""" if isinstance(x, datetime): return x.time() return x
[docs]def date_to_datetime(x): """Convert a date into a datetime""" if not isinstance(x, datetime) and isinstance(x, date): return datetime.combine(x, time()) return x
[docs]def time_to_datetime(x): """Convert a time into a datetime""" if isinstance(x, time): return datetime.combine(date(1970, 1, 1), x) return x
[docs]def timedelta_to_seconds(x): """Convert a timedelta into an amount of seconds""" if isinstance(x, timedelta): return total_seconds(x) return x
[docs]def time_to_seconds(x): """Convert a time in a seconds sum""" if isinstance(x, time): return (( ((x.hour * 60) + x.minute) * 60 + x.second ) * 10 ** 6 + x.microsecond) / 10 ** 6 if is_str(x): return x # Clamp to valid time return x and max(0, min(x, 24 * 3600 - 10 ** -6))
[docs]def seconds_to_time(x): """Convert a number of second into a time""" t = int(x * 10 ** 6) ms = t % 10 ** 6 t = t // 10 ** 6 s = t % 60 t = t // 60 m = t % 60 t = t // 60 h = t return time(h, m, s, ms)
[docs]class DateTimeLine(XY): """DateTime abscissa xy graph class""" _x_adapters = [datetime_to_timestamp, date_to_datetime] @property def _x_format(self): """Return the value formatter for this graph""" def datetime_to_str(x): dt = datetime.utcfromtimestamp(x) return self.x_value_formatter(dt) return datetime_to_str
[docs]class DateLine(DateTimeLine): """Date abscissa xy graph class""" @property def _x_format(self): """Return the value formatter for this graph""" def date_to_str(x): d = date.fromtimestamp(x) return self.x_value_formatter(d) return date_to_str
[docs]class TimeLine(DateTimeLine): """Time abscissa xy graph class""" _x_adapters = [positive, time_to_seconds, datetime_to_time] @property def _x_format(self): """Return the value formatter for this graph""" def date_to_str(x): t = seconds_to_time(x) return self.x_value_formatter(t) return date_to_str
[docs]class TimeDeltaLine(XY): """TimeDelta abscissa xy graph class""" _x_adapters = [timedelta_to_seconds] @property def _x_format(self): """Return the value formatter for this graph""" def timedelta_to_str(x): td = timedelta(seconds=x) return self.x_value_formatter(td) return timedelta_to_str