forked from WeblateOrg/weblate
/
widgets.py
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/
widgets.py
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# -*- coding: utf-8 -*-
#
# Copyright © 2012 - 2015 Michal Čihař <michal@cihar.com>
#
# This file is part of Weblate <http://weblate.org/>
#
# 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/>.
#
from django.utils.translation import ugettext as _
from django.template.loader import render_to_string
from PIL import Image, ImageDraw
from weblate.trans.fonts import is_base, get_font
from weblate.appsettings import ENABLE_HTTPS
from cStringIO import StringIO
import os.path
import urllib
COLOR_DATA = {
'grey': {
'bar': 'rgb(0, 67, 118)',
'border': 'rgb(0, 0, 0)',
'text': 'rgb(0, 0, 0)',
},
'white': {
'bar': 'rgb(0, 67, 118)',
'border': 'rgb(0, 0, 0)',
'text': 'rgb(0, 0, 0)',
},
'black': {
'bar': 'rgb(0, 67, 118)',
'border': 'rgb(255, 255, 255)',
'text': 'rgb(255, 255, 255)',
},
'badge': {
'bar': 'rgb(0, 67, 118)',
'border': 'rgb(255, 255, 255)',
'text': 'rgb(255, 255, 255)',
},
}
WIDGETS = {}
def register_widget(widget):
'''
Registers widget in dictionary.
'''
WIDGETS[widget.name] = widget
class Widget(object):
'''
Generic widget class.
'''
name = None
colors = ('grey', 'white', 'black')
progress = None
alpha = False
extension = 'png'
content_type = 'image/png'
order = 100
def __init__(self, obj, color=None, lang=None):
'''
Creates Widget object.
'''
# Get object and related params
self.obj = obj
self.percent = obj.get_translated_percent(lang)
self.total = obj.get_total()
self.languages = obj.get_language_count()
self.params = self.get_text_params()
# Process parameters
self.color = self.get_color_name(color)
self.lang = lang
# Set rendering variables
self.image = None
self.draw = None
self.width = 0
def get_color_name(self, color):
'''
Return color name based on allowed ones.
'''
if color not in self.colors:
return self.colors[0]
return color
def get_line_width(self):
'''
Returns line width for current widget.
'''
if self.color == 'black':
return 0.8
return 0.2
def get_text_params(self):
'''
Creates dictionary used for text formatting.
'''
return {
'name': self.obj.name,
'count': self.total,
'languages': self.languages,
'percent': self.percent,
}
def get_filename(self):
'''
Returns widgets filename.
'''
return os.path.join(
os.path.dirname(__file__),
'widget-images',
'%(widget)s-%(color)s.png' % {
'color': self.color,
'widget': self.name,
}
)
def render(self):
'''
Renders widget.
'''
# PIL objects
if self.alpha:
mode = 'RGBA'
else:
mode = 'RGB'
self.image = Image.open(self.get_filename()).convert(mode)
self.draw = ImageDraw.Draw(self.image)
self.width = self.image.size[0]
# Render progressbar
if self.progress:
self.render_progress()
# Render texts
self.render_texts()
def render_progress(self):
'''
Renders progress bar.
'''
# Filled bar
if self.progress['horizontal']:
self.draw.rectangle(
(
self.progress['x'],
self.progress['y'],
self.progress['x'] +
self.progress['width'] / 100.0 * self.percent,
self.progress['y'] + self.progress['height']
),
fill=COLOR_DATA[self.color]['bar'],
)
else:
diff = self.progress['height'] / 100.0 * (100 - self.percent)
self.draw.rectangle(
(
self.progress['x'],
self.progress['y'] + diff,
self.progress['x'] + self.progress['width'],
self.progress['y'] + self.progress['height'] - diff
),
fill=COLOR_DATA[self.color]['bar'],
)
# Progress border
self.draw.rectangle(
(
self.progress['x'],
self.progress['y'],
self.progress['x'] + self.progress['width'],
self.progress['y'] + self.progress['height']
),
outline=COLOR_DATA[self.color]['border']
)
def get_text(self, text, lang_text=None):
# Use language variant if desired
if self.lang is not None and lang_text is not None:
text = lang_text
if 'English' in text:
text = text.replace('English', self.lang.name)
# Format text
return text % self.params
def render_text(self, text, lang_text, base_font_size, bold_font,
pos_x, pos_y):
text = self.get_text(text, lang_text)
base_font = is_base(text)
offset = 0
for line in text.splitlines():
# Iterate until text fits into widget
for font_size in range(base_font_size, 3, -1):
font = get_font(font_size, bold_font, base_font)
layout_size = font.getsize(line)
layout_width = layout_size[0]
if layout_width + pos_x < self.width:
break
# Render text
self.draw.text(
(pos_x, pos_y + offset),
line,
font=font,
fill=COLOR_DATA[self.color]['text']
)
offset += layout_size[1]
def render_texts(self):
'''
Text rendering method to be overridden.
'''
raise NotImplementedError()
def get_image(self):
'''
Returns PNG data.
'''
out = StringIO()
if self.alpha:
image = self.image
else:
image = self.image.convert('P', palette=Image.ADAPTIVE)
image.save(out, 'PNG')
return out.getvalue()
class NormalWidget(Widget):
name = '287x66'
progress = {
'x': 72,
'y': 52,
'height': 6,
'width': 180,
'horizontal': True,
}
order = 110
def render_texts(self):
self.render_text(
'%(name)s',
None,
13, True,
72, 6
)
self.render_text(
_(
'translating %(count)d strings into %(languages)d languages\n'
'%(percent)d%% complete, help us improve!'
),
# Translators: please use your language name instead of English
_('translating %(count)d strings into English\n%(percent)d%%'
' complete, help us improve!'),
11, False,
72, 22
)
register_widget(NormalWidget)
class SmallWidget(Widget):
name = '88x31'
order = 120
def render_texts(self):
self.render_text(
'%(name)s',
None,
9, True,
23, 2
)
self.render_text(
_('translation\n%(percent)d%% done'),
# Translators: please use your language name instead of English
_('English translation\n%(percent)d%% done'),
9, False,
23, 11
)
register_widget(SmallWidget)
class BadgeWidget(Widget):
name = 'status'
colors = ('badge', )
alpha = True
order = 90
def get_filename(self):
if self.percent > 90:
mode = 'passing'
elif self.percent > 75:
mode = 'medium'
else:
mode = 'failing'
return os.path.join(
os.path.dirname(__file__),
'widget-images',
'badge-%s.png' % mode
)
def render_texts(self):
self.render_text(
_('translated'),
None,
10, False,
4, 3
)
self.render_text(
'%(percent)d%%',
None,
10, False,
60, 3
)
register_widget(BadgeWidget)
class ShieldsBadgeWidget(Widget):
name = 'shields'
colors = ('badge', )
extension = 'svg'
content_type = 'image/svg+xml'
order = 80
def redirect(self):
if ENABLE_HTTPS:
proto = 'https'
else:
proto = 'http'
if self.percent > 90:
color = 'brightgreen'
elif self.percent > 75:
color = 'yellow'
else:
color = 'red'
return '{0}://img.shields.io/badge/{1}-{2}-{3}.svg'.format(
proto,
urllib.quote(_('translated').encode('utf-8')),
'{0}%25'.format(int(self.percent)),
color
)
def render_texts(self):
'''
Text rendering method to be overridden.
'''
raise Exception('Not supported')
register_widget(ShieldsBadgeWidget)
class SVGBadgeWidget(Widget):
name = 'svg'
colors = ('badge', )
extension = 'svg'
content_type = 'image/svg+xml; charset=utf-8'
order = 80
def render(self):
translated_text = self.get_text(_('translated'))
font = get_font(11, False, is_base(translated_text))
translated_width = font.getsize(translated_text)[0] + 12
percent_text = '{0}%'.format(int(self.percent))
font = get_font(11, False, is_base(percent_text))
percent_width = font.getsize(percent_text)[0] + 7
if self.percent > 90:
color = '#4c1'
elif self.percent > 75:
color = '#dfb317'
else:
color = '#e05d44'
self.image = render_to_string(
'badge.svg',
{
'translated_text': translated_text,
'percent_text': percent_text,
'translated_width': translated_width,
'percent_width': percent_width,
'width': translated_width + percent_width,
'color': color,
'translated_offset': translated_width / 2,
'percent_offset': translated_width + percent_width / 2,
}
)
def get_image(self):
return self.image
def render_texts(self):
'''
Text rendering method to be overridden.
'''
raise Exception('Not supported')
register_widget(SVGBadgeWidget)