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