Unit conversion on Squib::Deck.new

Contributes to #21

lib/squib/deck.rb

@@ -6,6 +6,7 @@ require 'squib/progress'
 require 'squib/input_helpers'
 require 'squib/constants'
 require 'squib/layout_parser'
+require 'squib/args/unit_conversion'
 
 # The project module
 #
@@ -46,8 +47,8 @@ module Squib
     #     text str: 'Hello, World!"
     #   end
     #
-    # @param width [Integer] the width of each card in pixels
-    # @param height [Integer] the height of each card in pixels
+    # @param width [Integer] the width of each card in pixels. Supports unit conversion (e.g. '2.5in').
+    # @param height [Integer] the height of each card in pixels. Supports unit conversion (e.g. '3.5in').
     # @param cards [Integer] the number of cards in the deck
     # @param dpi [Integer] the pixels per inch when rendering out to PDF or calculating using inches.
     # @param config [String] the file used for global settings of this deck
@@ -55,20 +56,21 @@ module Squib
     # @param block [Block] the main body of the script.
     # @api public
     def initialize(width: 825, height: 1125, cards: 1, dpi: 300, config: 'config.yml', layout: nil, &block)
-      @width=width; @height=height
       @dpi           = dpi
+      @width         = Args::UnitConversion.parse width, dpi
+      @height        = Args::UnitConversion.parse height, dpi
       @font          = Squib::SYSTEM_DEFAULTS[:default_font]
       @cards         = []
       @custom_colors = {}
       @img_dir       = '.'
       @progress_bar  = Squib::Progress.new(false)
       @text_hint     = :off
-      cards.times{ @cards << Squib::Card.new(self, width, height) }
+      cards.times{ @cards << Squib::Card.new(self, @width, @height) }
       show_info(config, layout)
       load_config(config)
       @layout        = LayoutParser.load_layout(layout)
       if block_given?
-        instance_eval(&block)
+        instance_eval(&block) # here we go. wheeeee!
       end
     end
 

spec/deck_spec.rb

@@ -10,6 +10,12 @@ describe Squib::Deck do
     expect(d.cards.size).to eq(1)
   end
 
+  it 'can be built with unit conversion' do
+    d = Squib::Deck.new(width: '1in', height: '2in')
+    expect(d.width).to eq(300)
+    expect(d.height).to eq(600)
+  end
+
   context 'in dealing with ranges' do
     it 'calls text on all cards by default' do
       card1 = instance_double(Squib::Card)