/usr/lib/python3/dist-packages/pygal/graph/solidgauge.py is in python3-pygal 2.4.0-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 | # -*- 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 <http://www.gnu.org/licenses/>.
"""
Solid Guage
For each series a solid guage is shown on the plot area.
"""
from __future__ import division
from math import pi, sqrt
from pygal.graph.graph import Graph
from pygal.util import alter, decorate
class SolidGauge(Graph):
def gaugify(self, serie, squares, sq_dimensions, current_square):
serie_node = self.svg.serie(serie)
if self.half_pie:
start_angle = 3 * pi / 2
center = (
(current_square[1] * sq_dimensions[0]) - (
sq_dimensions[0] / 2.),
(current_square[0] * sq_dimensions[1]) - (
sq_dimensions[1] / 4))
end_angle = pi / 2
else:
start_angle = 0
center = (
(current_square[1] * sq_dimensions[0]) - (
sq_dimensions[0] / 2.),
(current_square[0] * sq_dimensions[1]) - (
sq_dimensions[1] / 2.))
end_angle = 2 * pi
max_value = serie.metadata.get(0, {}).get('max_value', 100)
radius = min([sq_dimensions[0] / 2, sq_dimensions[1] / 2]) * .9
small_radius = radius * serie.inner_radius
self.svg.gauge_background(
serie_node, start_angle, center, radius, small_radius, end_angle,
self.half_pie, self._serie_format(serie, max_value))
sum_ = 0
for i, value in enumerate(serie.values):
if value is None:
continue
ratio = min(value, max_value) / max_value
if self.half_pie:
angle = 2 * pi * ratio / 2
else:
angle = 2 * pi * ratio
val = self._format(serie, i)
metadata = serie.metadata.get(i)
gauge_ = decorate(
self.svg,
self.svg.node(serie_node['plot'], class_="gauge"),
metadata)
alter(
self.svg.solid_gauge(
serie_node, gauge_, radius, small_radius,
angle, start_angle, center, val, i, metadata,
self.half_pie, end_angle,
self._serie_format(serie, max_value)),
metadata)
start_angle += angle
sum_ += value
x, y = center
self.svg.node(
serie_node['text_overlay'], 'text',
class_='value gauge-sum',
x=x,
y=y + self.style.value_font_size / 3,
attrib={'text-anchor': 'middle'}
).text = self._serie_format(serie, sum_)
def _compute_x_labels(self):
pass
def _compute_y_labels(self):
pass
def _plot(self):
"""Draw all the serie slices"""
squares = self._squares()
sq_dimensions = self.add_squares(squares)
for index, serie in enumerate(self.series):
current_square = self._current_square(squares, index)
self.gaugify(
serie, squares, sq_dimensions, current_square)
def _squares(self):
n_series_ = len(self.series)
i = 2
if sqrt(n_series_).is_integer():
_x = int(sqrt(n_series_))
_y = int(sqrt(n_series_))
else:
while i * i < n_series_:
while n_series_ % i == 0:
n_series_ = n_series_ / i
i = i + 1
_y = int(n_series_)
_x = int(len(self.series) / _y)
if len(self.series) == 5:
_x, _y = 2, 3
if abs(_x - _y) > 2:
_sq = 3
while (_x * _y) - 1 < len(self.series):
_x, _y = _sq, _sq
_sq += 1
return (_x, _y)
def _current_square(self, squares, index):
current_square = [1, 1]
steps = index + 1
steps_taken = 0
for i in range(squares[0] * squares[1]):
steps_taken += 1
if steps_taken != steps and steps_taken % squares[0] != 0:
current_square[1] += 1
elif steps_taken != steps and steps_taken % squares[0] == 0:
current_square[1] = 1
current_square[0] += 1
else:
return tuple(current_square)
raise Exception(
'Something went wrong with the current square assignment.')
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