|
1
|
1 |
|
import os |
|
2
|
1 |
|
import hashlib |
|
3
|
1 |
|
import logging |
|
4
|
|
|
|
|
5
|
1 |
|
from PIL import Image as ImageFile, ImageFont, ImageDraw, ImageFilter |
|
|
|
|
|
|
6
|
|
|
|
|
7
|
|
|
|
|
8
|
1 |
|
log = logging.getLogger(__name__) |
|
9
|
|
|
|
|
10
|
|
|
|
|
11
|
1 |
|
class Image(object): |
|
12
|
|
|
"""JPEG generated by applying text to a template.""" |
|
13
|
|
|
|
|
14
|
1 |
|
def __init__(self, template, text, root=None, |
|
15
|
|
|
style=None, font=None, size=None, |
|
16
|
|
|
watermark="", watermark_font=None): |
|
17
|
1 |
|
self.root = root |
|
18
|
1 |
|
self.template = template |
|
19
|
1 |
|
self.style = style |
|
20
|
1 |
|
self.text = text |
|
21
|
1 |
|
self.font = font |
|
22
|
1 |
|
self.width = size.get('width') if size else None |
|
23
|
1 |
|
self.height = size.get('height') if size else None |
|
24
|
1 |
|
self.watermark = watermark |
|
25
|
1 |
|
self.watermark_font = watermark_font |
|
26
|
|
|
|
|
27
|
1 |
|
@property |
|
28
|
|
|
def path(self): |
|
29
|
1 |
|
if not self.root: |
|
30
|
|
|
return None |
|
31
|
|
|
|
|
32
|
1 |
|
base = os.path.join(self.root, self.template.key, self.text.path) |
|
33
|
1 |
|
custom = [self.style, self.font, self.watermark, |
|
34
|
|
|
self.width, self.height] |
|
35
|
|
|
|
|
36
|
1 |
|
if any(custom): |
|
37
|
1 |
|
slug = self.hash(custom) |
|
38
|
1 |
|
return "{}#{}.img".format(base, slug) |
|
39
|
|
|
else: |
|
40
|
1 |
|
return base + ".img" |
|
41
|
|
|
|
|
42
|
1 |
|
@staticmethod |
|
43
|
|
|
def hash(values): |
|
44
|
1 |
|
sha = hashlib.md5() |
|
45
|
1 |
|
for index, value in enumerate(values): |
|
46
|
1 |
|
sha.update("{}:{}".format(index, value or "").encode('utf-8')) |
|
47
|
1 |
|
return sha.hexdigest() |
|
48
|
|
|
|
|
49
|
1 |
|
def save(self): |
|
50
|
1 |
|
data = _generate( |
|
51
|
|
|
top=self.text.top, bottom=self.text.bottom, |
|
52
|
|
|
font_path=self.font.path, |
|
53
|
|
|
background=self.template.get_path(self.style), |
|
54
|
|
|
width=self.width, height=self.height, |
|
55
|
|
|
watermark=self.watermark, |
|
56
|
|
|
watermark_font_path=self.watermark_font.path, |
|
57
|
|
|
) |
|
58
|
|
|
|
|
59
|
1 |
|
directory = os.path.dirname(self.path) |
|
60
|
1 |
|
if not os.path.isdir(directory): |
|
61
|
1 |
|
os.makedirs(directory) |
|
62
|
|
|
|
|
63
|
1 |
|
log.info("Saving image: %s", self.path) |
|
64
|
1 |
|
path = data.save(self.path, format=data.format) |
|
65
|
|
|
|
|
66
|
1 |
|
return path |
|
67
|
|
|
|
|
68
|
|
|
|
|
69
|
1 |
|
def _generate(top, bottom, font_path, background, width, height, |
|
70
|
|
|
watermark, watermark_font_path): |
|
71
|
|
|
"""Add text to an image and save it.""" |
|
72
|
1 |
|
log.info("Loading background: %s", background) |
|
73
|
1 |
|
background_image = ImageFile.open(background) |
|
74
|
1 |
|
if background_image.mode not in ('RGB', 'RGBA'): |
|
75
|
1 |
|
if background_image.format == 'JPEG': |
|
76
|
1 |
|
background_image = background_image.convert('RGB') |
|
77
|
1 |
|
background_image.format = 'JPEG' |
|
78
|
|
|
else: |
|
79
|
1 |
|
background_image = background_image.convert('RGBA') |
|
80
|
1 |
|
background_image.format = 'PNG' |
|
81
|
|
|
|
|
82
|
|
|
# Resize to a maximum height and width |
|
83
|
1 |
|
ratio = background_image.size[0] / background_image.size[1] |
|
84
|
1 |
|
if width and height: |
|
85
|
1 |
|
if width < height * ratio: |
|
86
|
1 |
|
dimensions = width, int(width / ratio) |
|
87
|
|
|
else: |
|
88
|
1 |
|
dimensions = int(height * ratio), height |
|
89
|
1 |
|
elif width: |
|
90
|
1 |
|
dimensions = width, int(width / ratio) |
|
91
|
1 |
|
elif height: |
|
92
|
1 |
|
dimensions = int(height * ratio), height |
|
93
|
|
|
else: |
|
94
|
1 |
|
dimensions = 600, int(600 / ratio) |
|
95
|
1 |
|
image = background_image.resize(dimensions, ImageFile.LANCZOS) |
|
96
|
1 |
|
image.format = 'PNG' |
|
97
|
|
|
|
|
98
|
|
|
# Draw image |
|
99
|
1 |
|
draw = ImageDraw.Draw(image) |
|
100
|
|
|
|
|
101
|
1 |
|
max_font_size = int(image.size[1] / 5) |
|
102
|
1 |
|
min_font_size_single_line = int(image.size[1] / 12) |
|
103
|
1 |
|
max_text_len = image.size[0] - 20 |
|
104
|
1 |
|
top_font_size, top = _optimize_font_size( |
|
105
|
|
|
font_path, top, max_font_size, |
|
106
|
|
|
min_font_size_single_line, max_text_len, |
|
107
|
|
|
) |
|
108
|
1 |
|
bottom_font_size, bottom = _optimize_font_size( |
|
109
|
|
|
font_path, bottom, max_font_size, |
|
110
|
|
|
min_font_size_single_line, max_text_len, |
|
111
|
|
|
) |
|
112
|
|
|
|
|
113
|
1 |
|
top_font = ImageFont.truetype(font_path, top_font_size) |
|
114
|
1 |
|
bottom_font = ImageFont.truetype(font_path, bottom_font_size) |
|
115
|
|
|
|
|
116
|
1 |
|
top_text_size = draw.multiline_textsize(top, top_font) |
|
117
|
1 |
|
bottom_text_size = draw.multiline_textsize(bottom, bottom_font) |
|
118
|
|
|
|
|
119
|
|
|
# Find top centered position for top text |
|
120
|
1 |
|
top_text_position_x = (image.size[0] / 2) - (top_text_size[0] / 2) |
|
121
|
1 |
|
top_text_position_y = 0 |
|
122
|
1 |
|
top_text_position = (top_text_position_x, top_text_position_y) |
|
123
|
|
|
|
|
124
|
|
|
# Find bottom centered position for bottom text |
|
125
|
1 |
|
bottom_text_size_x = (image.size[0] / 2) - (bottom_text_size[0] / 2) |
|
126
|
1 |
|
bottom_text_size_y = image.size[1] - bottom_text_size[1] * (7 / 6) |
|
127
|
1 |
|
if watermark: |
|
128
|
1 |
|
bottom_text_size_y = bottom_text_size_y - 5 |
|
129
|
1 |
|
bottom_text_position = (bottom_text_size_x, bottom_text_size_y) |
|
130
|
|
|
|
|
131
|
1 |
|
_draw_outlined_text(draw, top_text_position, |
|
132
|
|
|
top, top_font, top_font_size) |
|
133
|
1 |
|
_draw_outlined_text(draw, bottom_text_position, |
|
134
|
|
|
bottom, bottom_font, bottom_font_size) |
|
135
|
|
|
|
|
136
|
|
|
# Pad image if a specific dimension is requested |
|
137
|
1 |
|
if width and height: |
|
138
|
1 |
|
image = _add_blurred_background(image, background_image, width, height) |
|
139
|
|
|
|
|
140
|
|
|
# Add watermark |
|
141
|
1 |
|
if watermark: |
|
142
|
1 |
|
draw = ImageDraw.Draw(image) |
|
143
|
1 |
|
watermark_font = ImageFont.truetype(watermark_font_path, 15) |
|
144
|
1 |
|
_draw_outlined_text(draw, (3, image.size[1] - 20), |
|
145
|
|
|
watermark, watermark_font, 15) |
|
146
|
|
|
|
|
147
|
1 |
|
return image |
|
148
|
|
|
|
|
149
|
|
|
|
|
150
|
1 |
|
def _optimize_font_size(font, text, max_font_size, min_font_size, |
|
151
|
|
|
max_text_len): |
|
152
|
|
|
"""Calculate the optimal font size to fit text in a given size.""" |
|
153
|
|
|
|
|
154
|
|
|
# Check size when using smallest single line font size |
|
155
|
1 |
|
fontobj = ImageFont.truetype(font, min_font_size) |
|
156
|
1 |
|
text_size = fontobj.getsize(text) |
|
157
|
|
|
|
|
158
|
|
|
# Calculate font size for text, split if necessary |
|
159
|
1 |
|
if text_size[0] > max_text_len: |
|
160
|
1 |
|
phrases = _split(text) |
|
161
|
|
|
else: |
|
162
|
1 |
|
phrases = (text,) |
|
163
|
1 |
|
font_size = max_font_size // len(phrases) |
|
164
|
1 |
|
for phrase in phrases: |
|
165
|
1 |
|
font_size = min(_maximize_font_size(font, phrase, max_text_len), |
|
166
|
|
|
font_size) |
|
167
|
|
|
|
|
168
|
|
|
# Rebuild text with new lines |
|
169
|
1 |
|
text = '\n'.join(phrases) |
|
170
|
|
|
|
|
171
|
1 |
|
return font_size, text |
|
172
|
|
|
|
|
173
|
|
|
|
|
174
|
1 |
|
def _draw_outlined_text(draw_image, text_position, text, font, font_size): |
|
175
|
|
|
"""Draw white text with black outline on an image.""" |
|
176
|
|
|
|
|
177
|
|
|
# Draw black text outlines |
|
178
|
1 |
|
outline_range = max(1, font_size // 25) |
|
179
|
1 |
|
for x in range(-outline_range, outline_range + 1): |
|
180
|
1 |
|
for y in range(-outline_range, outline_range + 1): |
|
181
|
1 |
|
pos = (text_position[0] + x, text_position[1] + y) |
|
182
|
1 |
|
draw_image.multiline_text(pos, text, (0, 0, 0), |
|
183
|
|
|
font=font, align='center') |
|
184
|
|
|
|
|
185
|
|
|
# Draw inner white text |
|
186
|
1 |
|
draw_image.multiline_text(text_position, text, (255, 255, 255), |
|
187
|
|
|
font=font, align='center') |
|
188
|
|
|
|
|
189
|
|
|
|
|
190
|
1 |
|
def _add_blurred_background(foreground, background, width, height): |
|
191
|
|
|
"""Add a blurred background to match the requested dimensions.""" |
|
192
|
1 |
|
base_width, base_height = foreground.size |
|
193
|
|
|
|
|
194
|
1 |
|
border_width = min(width, base_width + 2) |
|
195
|
1 |
|
border_height = min(height, base_height + 2) |
|
196
|
1 |
|
border_dimensions = border_width, border_height |
|
197
|
1 |
|
border = ImageFile.new('RGB', border_dimensions) |
|
198
|
1 |
|
border.paste(foreground, ((border_width - base_width) // 2, |
|
199
|
|
|
(border_height - base_height) // 2)) |
|
200
|
|
|
|
|
201
|
1 |
|
padded_dimensions = (width, height) |
|
202
|
1 |
|
padded = background.resize(padded_dimensions, ImageFile.LANCZOS) |
|
203
|
|
|
|
|
204
|
1 |
|
darkened = padded.point(lambda p: p * 0.4) |
|
205
|
|
|
|
|
206
|
1 |
|
blurred = darkened.filter(ImageFilter.GaussianBlur(5)) |
|
207
|
1 |
|
blurred.format = 'PNG' |
|
208
|
|
|
|
|
209
|
1 |
|
blurred_width, blurred_height = blurred.size |
|
210
|
1 |
|
offset = ((blurred_width - border_width) // 2, |
|
211
|
|
|
(blurred_height - border_height) // 2) |
|
212
|
1 |
|
blurred.paste(border, offset) |
|
213
|
|
|
|
|
214
|
1 |
|
return blurred |
|
215
|
|
|
|
|
216
|
|
|
|
|
217
|
1 |
|
def _maximize_font_size(font, text, max_size): |
|
218
|
|
|
"""Find the biggest font size that will fit.""" |
|
219
|
1 |
|
font_size = max_size |
|
220
|
|
|
|
|
221
|
1 |
|
fontobj = ImageFont.truetype(font, font_size) |
|
222
|
1 |
|
text_size = fontobj.getsize(text) |
|
223
|
1 |
|
while text_size[0] > max_size and font_size > 1: |
|
224
|
1 |
|
font_size = font_size - 1 |
|
225
|
1 |
|
fontobj = ImageFont.truetype(font, font_size) |
|
226
|
1 |
|
text_size = fontobj.getsize(text) |
|
227
|
|
|
|
|
228
|
1 |
|
return font_size |
|
229
|
|
|
|
|
230
|
|
|
|
|
231
|
1 |
|
def _split(text): |
|
232
|
|
|
"""Split a line of text into two similarly sized pieces. |
|
233
|
|
|
|
|
234
|
|
|
>>> _split("Hello, world!") |
|
235
|
|
|
('Hello,', 'world!') |
|
236
|
|
|
|
|
237
|
|
|
>>> _split("This is a phrase that can be split.") |
|
238
|
|
|
('This is a phrase', 'that can be split.') |
|
239
|
|
|
|
|
240
|
|
|
>>> _split("This_is_a_phrase_that_can_not_be_split.") |
|
241
|
|
|
('This_is_a_phrase_that_can_not_be_split.',) |
|
242
|
|
|
|
|
243
|
|
|
""" |
|
244
|
1 |
|
result = (text,) |
|
245
|
|
|
|
|
246
|
1 |
|
if len(text) >= 3 and ' ' in text[1:-1]: # can split this string |
|
247
|
1 |
|
space_indices = [i for i in range(len(text)) if text[i] == ' '] |
|
248
|
1 |
|
space_proximities = [abs(i - len(text) // 2) for i in space_indices] |
|
249
|
1 |
|
for i, j in zip(space_proximities, space_indices): |
|
250
|
1 |
|
if i == min(space_proximities): |
|
251
|
1 |
|
result = (text[:j], text[j + 1:]) |
|
252
|
1 |
|
break |
|
253
|
|
|
|
|
254
|
|
|
return result |
|
255
|
|
|
|
jacebrowning /
memegen
This can be caused by one of the following:
1. Missing Dependencies
This error could indicate a configuration issue of Pylint. Make sure that your libraries are available by adding the necessary commands.
2. Missing __init__.py files
This error could also result from missing
__init__.pyfiles in your module folders. Make sure that you place one file in each sub-folder.