Adding in a png method

lib/squib/api/image.rb

@@ -2,7 +2,9 @@ module Squib
   class Deck
     
     def png(range=:all, file: nil, x: 0, y: 0)
-      raise 'Not implemented!'
+      range = rangeify(range)
+      file = fileify(file)
+      range.each{ |i| @cards[i].png(file, x, y) }
     end
 
   end

lib/squib/card.rb

@@ -16,6 +16,7 @@ module Squib
     ### BACKEND GRAPHICS ###
     ########################
     require 'squib/graphics/background'
+    require 'squib/graphics/image'
     require 'squib/graphics/save_doc'
     require 'squib/graphics/save_images'
     require 'squib/graphics/shapes'

lib/squib/deck.rb

@@ -30,6 +30,11 @@ module Squib
       return range
     end
 
+    def fileify(file)
+      raise 'File #{file} does not exist!' unless File.exists? file
+      file
+    end
+
     ##################
     ### PUBLIC API ###
     ##################

lib/squib/graphics/image.rb

@@ -0,0 +1,12 @@
+module Squib
+  class Card
+
+    def png(file, x, y)
+      cc = cairo_context
+      png = Cairo::ImageSurface.from_png(file)
+      cc.set_source(png, x, y)
+      cc.paint
+    end
+
+  end
+end

samples/basic.rb

@@ -8,12 +8,14 @@ longtext = "Hello, World! What do you know about tweetle beetles? well... \nWhen
 Squib::Deck.new(width: 825, height: 1125, cards: 3) do
   background color: [1.0,1.0,1.0]
   rect x: 15, y: 15, width: 795, height: 1095, x_radius: 50, y_radius: 50
-  rect x: 30, y: 30, width: 150, height: 150, x_radius: 25, y_radius: 25
+  rect x: 30, y: 30, width: 128, height: 128, x_radius: 25, y_radius: 25
 
   text str: data['name'], x: 250, y: 55, font: 'Arial 54'
-  text str: data['level'], x: 75, y: 50, font: 'Arial 72'
+  text str: data['level'], x: 65, y: 40, font: 'Arial 72'
   text str: longtext, x: 100, y: 600, font: 'Arial 16'
 
+  png file: 'shiny-purse.png', x: 665, y: 30
+
   save format: :png
 end