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informatic 2017-05-28 02:53:46 +02:00
commit e6c4ebee5d
5 changed files with 183 additions and 0 deletions

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.editorconfig Normal file
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# top-most EditorConfig file
root = true
# Unix-style newlines with a newline ending every file
[*]
end_of_line = lf
insert_final_newline = true
charset = utf-8
[*.rb]
indent_style = spaces
indent_size = 2

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.gitignore vendored Normal file
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.bundle
vendor

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Gemfile Normal file
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source 'https://rubygems.org'
gem 'prawn'
gem 'prawn-qrcode'
gem 'prawn-svg'
gem 'sinatra'
gem 'color'
gem 'excon'
gem 'rmagick'
gem 'json'

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Gemfile.lock Normal file
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GEM
remote: https://rubygems.org/
specs:
addressable (2.5.0)
public_suffix (~> 2.0, >= 2.0.2)
chunky_png (1.3.8)
color (1.8)
css_parser (1.4.9)
addressable
excon (0.55.0)
json (1.8.3)
pdf-core (0.6.1)
prawn (2.1.0)
pdf-core (~> 0.6.1)
ttfunk (~> 1.4.0)
prawn-qrcode (0.3.0)
prawn (>= 1)
rqrcode (>= 0.4.1)
prawn-svg (0.26.0)
css_parser (~> 1.3)
prawn (>= 0.11.1, < 3)
public_suffix (2.0.5)
rack (1.6.5)
rack-protection (1.5.3)
rack
rmagick (2.16.0)
rqrcode (0.10.1)
chunky_png (~> 1.0)
sinatra (1.4.8)
rack (~> 1.5)
rack-protection (~> 1.4)
tilt (>= 1.3, < 3)
tilt (2.0.6)
ttfunk (1.4.0)
PLATFORMS
ruby
DEPENDENCIES
color
excon
json
prawn
prawn-qrcode
prawn-svg
rmagick
sinatra
BUNDLED WITH
1.11.2

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main.rb Normal file
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require 'rubygems'
require 'sinatra'
require 'prawn'
require 'prawn/measurements'
require 'prawn/qrcode'
require 'prawn-svg'
require 'color'
require 'excon'
require 'rmagick'
require 'json'
require 'zlib'
include Prawn::Measurements
module Excon
class Response
def json!()
puts body
JSON.parse(body)
end
end
end
BACKEND_URL = 'http://127.0.0.1:8000/api/1/'
CODE_PREFIX = "HTTP://I/"
def api(uri)
Excon.get(BACKEND_URL + uri + "/").json!
end
def render_identicode(data, id, extent)
pts = [[0, 0], [0, 1], [1, 1], [1, 0], [0, 0]]
4.times do |n|
color = Color::HSL.from_fraction((id % 6) / 6.0, 1.0, 0.3).html[1..6]
id /= 6
save_graphics_state do
soft_mask do
fill_color 'ffffff'
polygon = [pts[n], [0.5, 0.5], pts[n+1]].map{ |v| [v[0]*bounds.height, v[1]*bounds.height] }
fill_polygon(*(polygon))
end
print_qr_code data, stroke: false,
extent: extent, foreground_color: color,
pos: [bounds.left, bounds.top]
end
end
fill_color '000000'
end
def render_label(label)
margin = 2
label = api("labels/#{label}")
pdf = Prawn::Document.new(page_size: [89, 36].map { |x| mm2pt(x) },
margin: mm2pt(margin)) do
font_families.update("DejaVuSans" => {
normal: "fonts/DejaVuSans.ttf",
italic: "fonts/DejaVuSans-Oblique.ttf",
bold: "fonts/DejaVuSans-Bold.ttf",
bold_italic: "fonts/DejaVuSans-BoldOblique.ttf"
})
font 'DejaVuSans'
svg IO.read("hsyrenka.svg"),
position: :right, vposition: :bottom,
height: 0.5*bounds.height
print_qr_code CODE_PREFIX + label['id'], stroke: false,
extent: mm2pt(36-2*margin), foreground_color: color,
pos: [bounds.left, bounds.top]
text_box label['item']['name'],
size: 30, align: :center, valign: :center,
inline_format: true,
width: bounds.width - bounds.height - 8,
height: bounds.height - 10,
at: [bounds.left+bounds.height, bounds.top - 5],
overflow: :shrink_to_fit
end
pdf.render
end
get '/api/1/preview/:label.pdf' do
headers["Content-Type"] = "application/pdf; charset=utf8"
render_label params["label"]
end
get '/api/1/preview/:label.png' do
headers["Content-Type"] = "image/png"
img = Magick::ImageList.new()
img = img.from_blob(render_label(params["label"])){ self.density = 200 }.first
img.format = 'png'
img.background_color = 'white'
img.to_blob
end
post '/api/1/print/:label' do
temp = Tempfile.new('labelmaker')
temp.write(render_label(params["label"]))
temp.close
system("lpr -P DYMO_LabelWriter_450 #{temp.path}")
end