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
|
namespace :gemojione do
desc 'Generates Emoji SHA256 digests'
task digests: :environment do
require 'digest/sha2'
require 'json'
dir = Gemojione.index.images_path
digests = []
aliases = Hash.new { |hash, key| hash[key] = [] }
aliases_path = File.join(Rails.root, 'fixtures', 'emojis', 'aliases.json')
JSON.parse(File.read(aliases_path)).each do |alias_name, real_name|
aliases[real_name] << alias_name
end
Gitlab::AwardEmoji.emojis.map do |name, emoji_hash|
fpath = File.join(dir, "#{emoji_hash['unicode']}.png")
digest = Digest::SHA256.file(fpath).hexdigest
digests << { name: name, unicode: emoji_hash['unicode'], digest: digest }
aliases[name].each do |alias_name|
digests << { name: alias_name, unicode: emoji_hash['unicode'], digest: digest }
end
end
out = File.join(Rails.root, 'fixtures', 'emojis', 'digests.json')
File.open(out, 'w') do |handle|
handle.write(JSON.pretty_generate(digests))
end
end
# This task will generate a standard and Retina sprite of all of the current
# Gemojione Emojis, with the accompanying SCSS map.
#
# It will not appear in `rake -T` output, and the dependent gems are not
# included in the Gemfile by default, because this task will only be needed
# occasionally, such as when new Emojis are added to Gemojione.
task sprite: :environment do
begin
require 'sprite_factory'
require 'rmagick'
rescue LoadError
# noop
end
check_requirements!
SIZE = 20
RETINA = SIZE * 2
Dir.mktmpdir do |tmpdir|
# Copy the Gemojione assets to the temporary folder for resizing
FileUtils.cp_r(Gemojione.index.images_path, tmpdir)
Dir.chdir(tmpdir) do
Dir["**/*.png"].each do |png|
resize!(File.join(tmpdir, png), SIZE)
end
end
style_path = Rails.root.join(*%w(app assets stylesheets pages emojis.scss))
# Combine the resized assets into a packed sprite and re-generate the SCSS
SpriteFactory.cssurl = "image-url('$IMAGE')"
SpriteFactory.run!(File.join(tmpdir, 'images'), {
output_style: style_path,
output_image: "app/assets/images/emoji.png",
selector: '.emoji-',
style: :scss,
nocomments: true,
pngcrush: true,
layout: :packed
})
# SpriteFactory's SCSS is a bit too verbose for our purposes here, so
# let's simplify it
system(%Q(sed -i '' "s/width: #{SIZE}px; height: #{SIZE}px; background: image-url('emoji.png')/background-position:/" #{style_path}))
system(%Q(sed -i '' "s/ no-repeat//" #{style_path}))
system(%Q(sed -i '' "s/ 0px/ 0/" #{style_path}))
# Append a generic rule that applies to all Emojis
File.open(style_path, 'a') do |f|
f.puts
f.puts <<-CSS.strip_heredoc
.emoji-icon {
background-image: image-url('emoji.png');
background-repeat: no-repeat;
height: #{SIZE}px;
width: #{SIZE}px;
@media only screen and (-webkit-min-device-pixel-ratio: 2),
only screen and (min--moz-device-pixel-ratio: 2),
only screen and (-o-min-device-pixel-ratio: 2/1),
only screen and (min-device-pixel-ratio: 2),
only screen and (min-resolution: 192dpi),
only screen and (min-resolution: 2dppx) {
background-image: image-url('emoji@2x.png');
background-size: 840px 820px;
}
}
CSS
end
end
# Now do it again but for Retina
Dir.mktmpdir do |tmpdir|
# Copy the Gemojione assets to the temporary folder for resizing
FileUtils.cp_r(Gemojione.index.images_path, tmpdir)
Dir.chdir(tmpdir) do
Dir["**/*.png"].each do |png|
resize!(File.join(tmpdir, png), RETINA)
end
end
# Combine the resized assets into a packed sprite and re-generate the SCSS
SpriteFactory.run!(File.join(tmpdir, 'images'), {
output_image: "app/assets/images/emoji@2x.png",
style: false,
nocomments: true,
pngcrush: true,
layout: :packed
})
end
end
def check_requirements!
return if defined?(SpriteFactory) && defined?(Magick)
puts <<-MSG.strip_heredoc
This task is disabled by default and should only be run when the Gemojione
gem is updated with new Emojis.
To enable this task, *temporarily* add the following lines to Gemfile and
re-bundle:
gem 'sprite-factory'
gem 'rmagick'
MSG
exit 1
end
def resize!(image_path, size)
# Resize the image in-place, save it, and free the object
image = Magick::Image.read(image_path).first
image.resize!(size, size)
image.write(image_path) { self.quality = 100 }
image.destroy!
end
end
|
