def features_visualization(features):
'''
features - a dictionary of track features
prints a bar chart of selected features (on the same scale of 0-1)
'''
feature_dict = copy.deepcopy(features)
# exclude some features
for feature in [
'time_signature', 'mode', 'loudness', 'key', 'tempo',
'duration_ms', 'analysis_url', 'id', 'track_href', 'type', 'uri'
]:
del feature_dict[feature]
# customize chart style
custom_style = Style(background='rgba(253, 247, 246, 0.4)',
plot_background='rgba(249, 228, 225, 1)',
foreground='rgba(0, 0, 0, 0.9)',
foreground_strong='rgba(0, 0, 0, 0.9)',
foreground_subtle='rgba(0, 0, 0, 0.5)',
opacity='.6',
opacity_hover='.9',
colors=('#d94e4c', '#e5884f', '#39929a',
lighten('#d94e4c', 10), darken('#39929a', 15),
lighten('#e5884f',
17), darken('#d94e4c',
10), '#234547'))
# create chart
chart = pygal.HorizontalBar(style=custom_style)
chart.title = 'Track Features'
for feature, value in feature_dict.items():
chart.add(feature, value)
chart.render()
return chart.render_data_uri()
class DarkGreenStyle(Style):
"""A dark green style"""
background = darken('#251e01', 3)
plot_background = darken('#251e01', 1)
foreground = 'rgba(255, 255, 255, 0.9)'
foreground_strong = 'rgba(255, 255, 255, 0.9)'
foreground_subtle = 'rgba(255, 255, 255, 0.6)'
opacity = '.6'
opacity_hover = '.9'
transition = '250ms ease-in'
colors = ('#adde09', '#6e8c06', '#4a5e04', '#fcd202', '#C1E34D',
lighten('#fcd202', 25))
class TurquoiseStyle(Style):
"""A turquoise style"""
background = darken('#1b8088', 15)
plot_background = darken('#1b8088', 17)
foreground = 'rgba(255, 255, 255, 0.9)'
foreground_strong = 'rgba(255, 255, 255, 0.9)'
foreground_subtle = 'rgba(255, 255 , 255, 0.5)'
opacity = '.5'
opacity_hover = '.9'
transition = '250ms ease-in'
colors = ('#93d2d9', '#ef940f', '#8C6243', '#fff', darken('#93d2d9', 20),
lighten('#ef940f', 15), lighten('#8c6243', 15), '#1b8088')
class RedBlueStyle(Style):
"""A red and blue theme"""
background = lighten('#e6e7e9', 7)
plot_background = lighten('#e6e7e9', 10)
foreground = 'rgba(0, 0, 0, 0.9)'
foreground_strong = 'rgba(0, 0, 0, 0.9)'
foreground_subtle = 'rgba(0, 0, 0, 0.5)'
opacity = '.6'
opacity_hover = '.9'
colors = ('#d94e4c', '#e5884f', '#39929a', lighten('#d94e4c', 10),
darken('#39929a', 15), lighten('#e5884f',
17), darken('#d94e4c',
10), '#234547')
class DarkGreenBlueStyle(Style):
"""A dark green and blue style"""
background = '#000'
plot_background = lighten('#000', 8)
foreground = 'rgba(255, 255, 255, 0.9)'
foreground_strong = 'rgba(255, 255, 255, 0.9)'
foreground_subtle = 'rgba(255, 255, 255, 0.6)'
opacity = '.55'
opacity_hover = '.9'
transition = '250ms ease-in'
colors = (lighten('#34B8F7', 15), '#7dcf30', '#247fab',
darken('#7dcf30', 10), lighten('#247fab', 10),
lighten('#7dcf30', 10), darken('#247fab', 10), '#fff')
class LightGreenStyle(Style):
"""A light green style"""
background = lighten('#f3f3f3', 3)
plot_background = '#fff'
foreground = '#333333'
foreground_strong = '#666'
foreground_subtle = '#222222'
opacity = '.5'
opacity_hover = '.9'
transition = '250ms ease-in'
colors = ('#7dcf30', '#247fab', lighten('#7dcf30', 10), '#ccc',
darken('#7dcf30',
15), '#ddd', lighten('#247fab',
10), darken('#247fab', 15))
class BlueStyle(Style):
"""A blue style"""
background = darken('#f8f8f8', 3)
plot_background = '#f8f8f8'
foreground = 'rgba(0, 0, 0, 0.9)'
foreground_strong = 'rgba(0, 0, 0, 0.9)'
foreground_subtle = 'rgba(0, 0, 0, 0.6)'
opacity = '.5'
opacity_hover = '.9'
transition = '250ms ease-in'
colors = ('#00b2f0', '#43d9be', '#0662ab', darken('#00b2f0', 20),
lighten('#43d9be', 20), lighten('#7dcf30', 10),
darken('#0662ab', 15), '#ffd541', '#7dcf30',
lighten('#00b2f0', 15), darken('#ffd541', 20))
class DarkColorizedStyle(Style):
"""A dark colorized style"""
background = darken('#3a2d3f', 5)
plot_background = lighten('#3a2d3f', 2)
foreground = 'rgba(255, 255, 255, 0.9)'
foreground_strong = 'rgba(255, 255, 255, 0.9)'
foreground_subtle = 'rgba(255, 255 , 255, 0.5)'
opacity = '.2'
opacity_hover = '.7'
transition = '250ms ease-in'
colors = ('#c900fe', '#01b8fe', '#59f500', '#ff00e4', '#f9fa00',
darken('#c900fe', 20), darken('#01b8fe', 15),
darken('#59f500', 20), darken('#ff00e4',
15), lighten('#f9fa00', 20))
def get_colors(self, prefix, len_):
"""Get the css color list"""
def color(tupl):
"""Make a color css"""
return ((
'%s.color-{0}, %s.color-{0} a:visited {{\n'
' stroke: {1};\n'
' fill: {1};\n'
'}}\n'
) % (prefix, prefix)).format(*tupl)
def value_color(tupl):
"""Make a value color css"""
return ((
'%s .text-overlay .color-{0} text {{\n'
' fill: {1};\n'
'}}\n'
) % (prefix, )).format(*tupl)
def ci_color(tupl):
"""Make a value color css"""
if not tupl[1]:
return ''
return (('%s .color-{0} .ci {{\n'
' stroke: {1};\n'
'}}\n') % (prefix, )).format(*tupl)
if len(self.colors) < len_:
missing = len_ - len(self.colors)
cycles = 1 + missing // len(self.colors)
colors = []
for i in range(0, cycles + 1):
for color_ in self.colors:
colors.append(darken(color_, 33 * i / cycles))
if len(colors) >= len_:
break
else:
continue
break
else:
colors = self.colors[:len_]
# Auto compute foreground value color when color is missing
value_colors = []
for i in range(len_):
if i < len(self.value_colors) and self.value_colors[i] is not None:
value_colors.append(self.value_colors[i])
else:
value_colors.append(
'white' if is_foreground_light(colors[i]) else 'black'
)
return '\n'.join(
chain(
map(color, enumerate(colors)),
map(value_color, enumerate(value_colors)),
map(ci_color, enumerate(self.ci_colors))
)
)
def get_colors(self, prefix, len_):
"""Get the css color list"""
def color(tupl):
"""Make a color css"""
return ((
'%s.color-{0}, %s.color-{0} a:visited {{\n'
' stroke: {1};\n'
' fill: {1};\n'
'}}\n'
) % (prefix, prefix)).format(*tupl)
def value_color(tupl):
"""Make a value color css"""
return ((
'%s .text-overlay .color-{0} text {{\n'
' fill: {1};\n'
'}}\n'
) % (prefix, )).format(*tupl)
def ci_color(tupl):
"""Make a value color css"""
if not tupl[1]:
return ''
return (('%s .color-{0} .ci {{\n'
' stroke: {1};\n'
'}}\n') % (prefix, )).format(*tupl)
if len(self.colors) < len_:
missing = len_ - len(self.colors)
cycles = 1 + missing // len(self.colors)
colors = []
for i in range(0, cycles + 1):
for color_ in self.colors:
colors.append(darken(color_, 33 * i / cycles))
if len(colors) >= len_:
break
else:
continue
break
else:
colors = self.colors[:len_]
# Auto compute foreground value color when color is missing
value_colors = []
for i in range(len_):
if i < len(self.value_colors) and self.value_colors[i] is not None:
value_colors.append(self.value_colors[i])
else:
value_colors.append(
'white' if is_foreground_light(colors[i]) else 'black'
)
return '\n'.join(
chain(
map(color, enumerate(colors)),
map(value_color, enumerate(value_colors)),
map(ci_color, enumerate(self.ci_colors))
)
)
class LightColorizedStyle(Style):
"""A light colorized style"""
background = '#f8f8f8'
plot_background = lighten('#f8f8f8', 3)
foreground = '#333'
foreground_strong = '#666'
foreground_subtle = 'rgba(0, 0 , 0, 0.5)'
opacity = '.5'
opacity_hover = '.9'
transition = '250ms ease-in'
colors = ('#fe9592', '#534f4c', '#3ac2c0', '#a2a7a1',
darken('#fe9592', 15), lighten('#534f4c',
15), lighten('#3ac2c0', 15),
lighten('#a2a7a1', 15), lighten('#fe9592',
15), darken('#3ac2c0', 10))
def test_darken():
assert darken('#800', 20) == '#220000'
assert darken('#800', 0) == '#880000'
assert darken('#ffffff', 10) == '#e6e6e6'
assert darken('#000000', 10) == '#000000'
assert darken('#f3148a', 25) == '#810747'
assert darken('#121212', 1) == '#0f0f0f'
assert darken('#999999', 100) == '#000000'
assert darken('#1479ac', 8) == '#105f87'
def __init__(self):
mystyle = Style(
#background=darken('#f8f8f8', 3),
background='white',
plot_background='white',
foreground='rgba(0, 0, 0, 0.9)',
foreground_light='rgba(0, 0, 0, 0.9)',
foreground_dark='rgba(0, 0, 0, 0.6)',
opacity='.5',
opacity_hover='.9',
transition='250ms ease-in',
colors=('#00b2f0', '#43d9be', '#0662ab', darken('#00b2f0', 20),
lighten('#43d9be', 20), lighten('#7dcf30', 10),
darken('#0662ab', 15), '#ffd541', '#7dcf30',
lighten('#00b2f0', 15), darken('#ffd541', 20)))
self.tmpDir = tempfile.mkdtemp()
self.config = pygal.Config(style=mystyle,
legend_font_size=10,
width=500,
height=250)
def __init__(self):
mystyle = Style(
#background=darken('#f8f8f8', 3),
background='white',
plot_background='white',
foreground='rgba(0, 0, 0, 0.9)',
foreground_light='rgba(0, 0, 0, 0.9)',
foreground_dark='rgba(0, 0, 0, 0.6)',
opacity='.5',
opacity_hover='.9',
transition='250ms ease-in',
colors=('#00b2f0', '#43d9be', '#0662ab',
darken('#00b2f0', 20),lighten('#43d9be', 20),
lighten('#7dcf30', 10), darken('#0662ab', 15),
'#ffd541', '#7dcf30', lighten('#00b2f0', 15), darken('#ffd541', 20))
)
self.tmpDir = tempfile.mkdtemp()
self.config = pygal.Config(style=mystyle,
legend_font_size=10,
width=500,height=250)
opacity_hover='.9',
transition='500ms ease-in',
colors=solarized_colors)
RedBlueStyle = Style(
background=lighten('#e6e7e9', 7),
plot_background=lighten('#e6e7e9', 10),
foreground='rgba(0, 0, 0, 0.9)',
foreground_light='rgba(0, 0, 0, 0.9)',
foreground_dark='rgba(0, 0, 0, 0.5)',
opacity='.6',
opacity_hover='.9',
colors=(
'#d94e4c', '#e5884f', '#39929a',
lighten('#d94e4c', 10), darken('#39929a', 15), lighten('#e5884f', 17),
darken('#d94e4c', 10), '#234547'))
LightColorizedStyle = Style(
background='#f8f8f8',
plot_background=lighten('#f8f8f8', 3),
foreground='#333',
foreground_light='#666',
foreground_dark='rgba(0, 0 , 0, 0.5)',
opacity='.5',
opacity_hover='.9',
transition='250ms ease-in',
colors=(
'#fe9592', '#534f4c', '#3ac2c0', '#a2a7a1',
darken('#fe9592', 15), lighten('#534f4c', 15), lighten('#3ac2c0', 15),
def test_darken():
"""Test darken color function"""
assert darken('#800', 20) == '#200'
assert darken('#800e', 20) == '#200e'
assert darken('#800', 0) == '#800'
assert darken('#ffffff', 10) == '#e6e6e6'
assert darken('#000000', 10) == '#000000'
assert darken('#f3148a', 25) == '#810747'
assert darken('#f3148aab', 25) == '#810747ab'
assert darken('#121212', 1) == '#0f0f0f'
assert darken('#999999', 100) == '#000000'
assert darken('#99999999', 100) == '#00000099'
assert darken('#1479ac', 8) == '#105f87'
assert darken('rgb(136, 0, 0)', 20) == 'rgb(34, 0, 0)'
assert darken('rgba(20, 121, 172, .13)', 8) == 'rgba(16, 95, 135, 0.13)'
opacity_hover='.9',
transition='500ms ease-in',
colors=solarized_colors)
RedBlueStyle = Style(
background=lighten('#e6e7e9', 7),
plot_background=lighten('#e6e7e9', 10),
foreground='rgba(0, 0, 0, 0.9)',
foreground_light='rgba(0, 0, 0, 0.9)',
foreground_dark='rgba(0, 0, 0, 0.5)',
opacity='.6',
opacity_hover='.9',
colors=(
'#d94e4c', '#e5884f', '#39929a',
lighten('#d94e4c', 10), darken('#39929a', 15), lighten('#e5884f', 17),
darken('#d94e4c', 10), '#234547'))
LightColorizedStyle = Style(
background='#f8f8f8',
plot_background=lighten('#f8f8f8', 3),
foreground='#333',
foreground_light='#666',
foreground_dark='rgba(0, 0 , 0, 0.5)',
opacity='.5',
opacity_hover='.9',
transition='250ms ease-in',
colors=(
'#fe9592', '#534f4c', '#3ac2c0', '#a2a7a1',
darken('#fe9592', 15), lighten('#534f4c', 15), lighten('#3ac2c0', 15),
def test_darken():
"""Test darken color function"""
assert darken('#800', 20) == '#200'
assert darken('#800e', 20) == '#200e'
assert darken('#800', 0) == '#800'
assert darken('#ffffff', 10) == '#e6e6e6'
assert darken('#000000', 10) == '#000000'
assert darken('#f3148a', 25) == '#810747'
assert darken('#f3148aab', 25) == '#810747ab'
assert darken('#121212', 1) == '#0f0f0f'
assert darken('#999999', 100) == '#000000'
assert darken('#99999999', 100) == '#00000099'
assert darken('#1479ac', 8) == '#105f87'
assert darken('rgb(136, 0, 0)', 20) == 'rgb(34, 0, 0)'
assert darken('rgba(20, 121, 172, .13)', 8) == 'rgba(16, 95, 135, 0.13)'
from django.core.servers.basehttp import FileWrapper
from django.core.urlresolvers import reverse
from elearning.core.errors.views import server_error
from .forms import CourseForm
from datetime import datetime
from pygal.style import Style
from pygal.colors import darken
from pygal.config import Config
import json
import pygal
import requests
import urlparse
import tempfile
custom_style = Style(
background=darken('#f8f8f8', 3),
plot_background='#f8f8f8',
foreground='rgba(0, 0, 0, 0.9)',
foreground_light='rgba(0, 0, 0, 0.9)',
foreground_dark='rgba(0, 0, 0, 0.6)',
opacity='.5',
opacity_hover='.9',
transition='250ms ease-in',
colors=('#0ACF00','#0E51A7', '#FD0006', '#FF9E00'))
question_style = Style(
background=darken('#f8f8f8', 3),
plot_background='#f8f8f8',
foreground='rgba(0, 0, 0, 0.9)',
foreground_light='rgba(0, 0, 0, 0.9)',
foreground_dark='rgba(0, 0, 0, 0.6)',
