Better margins, sizing, layout...

Gemfile

@@ -1,7 +1,7 @@
 source 'https://rubygems.org'
 
 gem 'prawn'
-gem 'prawn-qrcode'
+gem 'prawn-qrcode', :git => 'https://github.com/jabbrwcky/prawn-qrcode', :ref => 'd492904'
 gem 'prawn-svg'
 gem 'sinatra'
 gem 'color'

Gemfile.lock

@@ -1,3 +1,12 @@
+GIT
+  remote: https://github.com/jabbrwcky/prawn-qrcode
+  revision: d4929043950962f299cb16873fc500bc4682bbed
+  ref: d492904
+  specs:
+    prawn-qrcode (0.3.0)
+      prawn (>= 1)
+      rqrcode (>= 0.4.1)
+
 GEM
   remote: https://rubygems.org/
   specs:
@@ -13,9 +22,6 @@ GEM
     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)
@@ -41,7 +47,7 @@ DEPENDENCIES
   excon
   json
   prawn
-  prawn-qrcode
+  prawn-qrcode!
   prawn-svg
   rmagick
   sinatra

main.rb

@@ -21,7 +21,7 @@ module Excon
   end
 end
 
-BACKEND_URL = 'http://inventory.waw.hackerspace.pl/api/1/'
+BACKEND_URL = 'https://inventory.waw.hackerspace.pl/api/1/'
 CODE_PREFIX = "HTTP://I/"
 
 def api(uri)
@@ -52,12 +52,11 @@ def render_identicode(data, id, extent)
 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
+                            margin: [2, 2, 2, 6].map { |x| mm2pt(x) }) do
     font_families.update("DejaVuSans" => {
       normal: "fonts/DejaVuSans.ttf",
       italic: "fonts/DejaVuSans-Oblique.ttf",
@@ -67,21 +66,23 @@ def render_label(label)
 
     font 'DejaVuSans'
 
-    svg IO.read("hsyrenka.svg"),
-      position: :right, vposition: :bottom,
-      height: 0.5*bounds.height
 
+    # Width of right side
+    rw = bounds.height/2
+
+    # Right side
+    bounding_box([bounds.right - rw, bounds.top], :width => rw) do
       print_qr_code CODE_PREFIX + label['id'], stroke: false,
-      extent: mm2pt(36-2*margin), foreground_color: color,
+        foreground_color: '000000',
-      pos: [bounds.left, bounds.top]
+        extent: bounds.width, margin: 0, pos: bounds.top_left
+    end
 
+    # Left side
+    bounding_box(bounds.top_left, :width => bounds.width-rw) do
       text_box label['item']['name'],
         size: 30, align: :center, valign: :center,
-      inline_format: true,
+        inline_format: true, overflow: :shrink_to_fit
-      width: bounds.width - bounds.height - 8,
+    end
-      height: bounds.height - 10,
-      at: [bounds.left+bounds.height, bounds.top - 5],
-      overflow: :shrink_to_fit
   end
 
   pdf.render