-
Notifications
You must be signed in to change notification settings - Fork 0
/
utils.py
206 lines (178 loc) · 8.51 KB
/
utils.py
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
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
## Generates og and twitter images
## run
## python utils.py --images=<path to public/gen/social/index.html>
import ConfigParser
import getopt
import io
import os
import sys
import urllib2
from PIL import Image, ImageDraw, ImageFont
# https://gist.github.com/turicas/1455973
class ImageText(object):
def __init__(self, filename_or_size, mode='RGBA', background=(0, 0, 0, 0),
encoding='utf8'):
if isinstance(filename_or_size, str):
self.filename = filename_or_size
self.image = Image.open(self.filename)
self.size = self.image.size
elif isinstance(filename_or_size, (list, tuple)):
self.size = filename_or_size
self.image = Image.new(mode, self.size, color=background)
self.filename = None
self.draw = ImageDraw.Draw(self.image)
self.encoding = encoding
def save(self, filename=None):
self.image.save(filename or self.filename)
def get_font_size(self, text, font, max_width=None, max_height=None):
if max_width is None and max_height is None:
raise ValueError('You need to pass max_width or max_height')
font_size = 1
text_size = self.get_text_size(font, font_size, text)
if (max_width is not None and text_size[0] > max_width) or \
(max_height is not None and text_size[1] > max_height):
raise ValueError("Text can't be filled in only (%dpx, %dpx)" % \
text_size)
while True:
if (max_width is not None and text_size[0] >= max_width) or \
(max_height is not None and text_size[1] >= max_height):
return font_size - 1
font_size += 1
text_size = self.get_text_size(font, font_size, text)
def write_text(self, (x, y), text, font_filename, font_size=11,
color=(0, 0, 0), max_width=None, max_height=None):
if isinstance(text, str):
text = text.decode(self.encoding)
if font_size == 'fill' and \
(max_width is not None or max_height is not None):
font_size = self.get_font_size(text, font_filename, max_width,
max_height)
text_size = self.get_text_size(font_filename, font_size, text)
font = ImageFont.truetype(font_filename, font_size)
if x == 'center':
x = (self.size[0] - text_size[0]) / 2
if y == 'center':
y = (self.size[1] - text_size[1]) / 2
self.draw.text((x, y), text, font=font, fill=color)
return text_size
def get_text_size(self, font_filename, font_size, text):
font = ImageFont.truetype(font_filename, font_size)
return font.getsize(text)
def write_text_box(self, (x, y), text, box_width, font_filename,
font_size=11, color=(0, 0, 0), place='left',
justify_last_line=False):
lines = []
line = []
words = text.split()
for word in words:
new_line = ' '.join(line + [word])
size = self.get_text_size(font_filename, font_size, new_line)
text_height = size[1]
if size[0] <= box_width:
line.append(word)
else:
lines.append(line)
line = [word]
if line:
lines.append(line)
lines = [' '.join(line) for line in lines if line]
height = y
for index, line in enumerate(lines):
height += text_height
if place == 'left':
self.write_text((x, height), line, font_filename, font_size,
color)
elif place == 'right':
total_size = self.get_text_size(font_filename, font_size, line)
x_left = x + box_width - total_size[0]
self.write_text((x_left, height), line, font_filename,
font_size, color)
elif place == 'center':
total_size = self.get_text_size(font_filename, font_size, line)
x_left = int(x + ((box_width - total_size[0]) / 2))
self.write_text((x_left, height), line, font_filename,
font_size, color)
elif place == 'justify':
words = line.split()
if (index == len(lines) - 1 and not justify_last_line) or \
len(words) == 1:
self.write_text((x, height), line, font_filename, font_size,
color)
continue
line_without_spaces = ''.join(words)
total_size = self.get_text_size(font_filename, font_size,
line_without_spaces)
space_width = (box_width - total_size[0]) / (len(words) - 1.0)
start_x = x
for word in words[:-1]:
self.write_text((start_x, height), word, font_filename,
font_size, color)
word_size = self.get_text_size(font_filename, font_size,
word)
start_x += word_size[0] + space_width
last_word_size = self.get_text_size(font_filename, font_size,
words[-1])
last_word_x = x + box_width - last_word_size[0]
self.write_text((last_word_x, height), words[-1], font_filename,
font_size, color)
return (box_width, height - y)
if __name__ == "__main__":
opts, args = getopt.getopt(sys.argv[1:], "pf", ["public=", "font="])
public = None
font = None
for opt, arg in opts:
if opt in ("-p", "--public"):
public = arg
elif opt in ("-f", "--font"):
font = arg
if public is not None and font is not None:
config = ConfigParser.ConfigParser()
config.read(os.path.join(public, 'gen/social/index.html'))
for section in config.sections():
background_image = None
print config.get(section, "title")
if config.has_option(section, 'image'):
image_path = config.get(section, 'image')
if image_path[0] == "\"":
image_path = image_path[1:-1]
if image_path[0:4] == 'http':
remote = urllib2.urlopen(image_path)
file = io.BytesIO(remote.read())
background_image = Image.open(file)
elif image_path[0:1] == '/':
background_image = Image.open(
os.path.join(public, image_path[1:]))
else:
background_image = ImageText((800, 600),
background=(241, 237, 234))
background_image = background_image.image
logo = Image.open("static/assets/img/logo.png")
background_image.paste(logo, (10, 10), logo)
text = None
if config.has_option(section, 'title'):
text = config.get(section, 'title')
if text[0] == "\"":
text = text[1:-1]
if config.has_option(section, 'summary'):
text = config.get(section, 'summary')
if text and text[0] == "\"":
text = text[1:-1]
out = config.get(section, 'out')
out_path = os.path.join(public, 'assets/img/cards/', out)
try:
os.makedirs(os.path.dirname(out_path))
except: # Guard against race condition
continue
color = (34, 34, 34)
text = unicode(text, encoding='utf8', errors='replace')
background_image.thumbnail((800, 600), Image.ANTIALIAS)
image_text = ImageText((800, 600), background=(241, 237, 234))
(width, height) = image_text.write_text_box((10, 10), text=text,
box_width=780,
font_filename=font,
color=color,
font_size=40)
image_text = image_text.image
image_text = image_text.crop((0, 40, width, height + 80))
background_image.paste(image_text, (10, 600 - height - 80 - 80))
background_image.save(out_path)