end of day commit

2012-08-29 17:42:04 +02:00
parent 89700f36e9
commit 8213bae2c6
57 changed files with 1109 additions and 128 deletions
@@ -0,0 +1,50 @@
+module RQRCode
+  module Renderers
+    class SVG
+      class << self
+        # Render the SVG from the qrcode string provided from the RQRCode gem
+        #   Options:
+        #   offset - Padding around the QR Code (e.g. 10)
+        #   unit   - How many pixels per module (Default: 11)
+        #   fill   - Background color (e.g "ffffff" or :white)
+        #   color  - Foreground color for the code (e.g. "000000" or :black)
+
+        def render(qrcode, options={})
+          offset  = options[:offset].to_i || 0
+          color   = options[:color]       || "000"
+          unit    = options[:unit]        || 11
+
+          # height and width dependent on offset and QR complexity
+          dimension = (qrcode.module_count*unit) + (2*offset)
+
+          xml_tag   = %{<?xml version="1.0" standalone="yes"?>}
+          open_tag  = %{<svg version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:ev="http://www.w3.org/2001/xml-events" width="#{dimension}" height="#{dimension}">}
+          close_tag = "</svg>"
+
+          result = []
+          qrcode.modules.each_index do |c|
+            tmp = []
+            qrcode.modules.each_index do |r|
+              y = c*unit + offset
+              x = r*unit + offset
+
+              next unless qrcode.is_dark(c, r)
+              tmp << %{<rect width="#{unit}" height="#{unit}" x="#{x}" y="#{y}" style="fill:##{color}"/>}
+            end 
+            result << tmp.join("\n")
+          end
+          
+          if options[:fill]
+            result.unshift %{<rect width="#{dimension}" height="#{dimension}" x="0" y="0" style="fill:##{options[:fill]}"/>}
+          end
+          
+          svg = [xml_tag, open_tag, result, close_tag].flatten.join("\n")
+          svg = File.read(File.expand_path('../../qr_container.svg', __FILE__))
+          svg.gsub!(/#table_number/, options[:table_number].to_s)
+          svg.gsub!(/#qrcode/, result.join("\n"))
+          svg
+        end
+      end
+    end
+  end
+end