Convert hand method to args classes

lib/squib/api/save.rb

@@ -1,4 +1,5 @@
 require 'squib/args/card_range'
+require 'squib/args/hand_special'
 require 'squib/args/save_batch'
 require 'squib/args/sheet'
 require 'squib/args/showcase_special'
@@ -138,13 +139,15 @@ module Squib
     # @return [nil] Returns nothing.
     # @api public
     def hand(opts = {})
+      range = Args::CardRange.new(opts[:range], deck_size: size)
+      hand  = Args::HandSpecial.new(height).load!(opts, expand_by: size, layout: layout, dpi: dpi)
+      sheet = Args::Sheet.new(custom_colors, {file: 'hand.png', trim_radius: 0}).load!(opts, expand_by: size, layout: layout, dpi: dpi)
+
       opts = {file: 'hand.png', fill_color: :white, radius: :auto, trim_radius: 0}
              .merge(opts)
       opts = needs(opts,[:range, :margin, :trim, :trim_radius, :creatable_dir, :file_to_save])
       opts[:radius] = 0.3 * height if opts[:radius] == :auto
-      render_hand(opts[:range], opts[:radius], opts[:angle_range],
-                  opts[:trim], opts[:trim_radius], opts[:margin],
-                  opts[:fill_color], opts[:dir], opts[:file])
+      render_hand(range, sheet, hand)
     end
 
   end

lib/squib/args/hand_special.rb

@@ -0,0 +1,37 @@
+require 'cairo'
+
+module Squib
+  # @api private
+  module Args
+
+    class HandSpecial
+      include ArgLoader
+
+      def initialize(card_height)
+        @card_height = card_height
+      end
+
+      def self.parameters
+        {
+          angle_range: (Math::PI / -4.0)..(Math::PI / 4),
+          radius: :auto
+        }
+      end
+
+      def self.expanding_parameters
+        [] # none of them
+      end
+
+      def self.params_with_units
+        [ :radius ]
+      end
+
+      def validate_radius(arg)
+        return 0.3 * @card_height if arg.to_s.downcase.strip == 'auto'
+        arg
+      end
+
+    end
+
+  end
+end

lib/squib/args/sheet.rb

@@ -62,6 +62,10 @@ module Squib
         (@deck_size.to_i / columns.to_i).ceil
       end
 
+      def full_filename
+        "#{dir}/#{file}"
+      end
+
     end
 
   end

lib/squib/args/showcase_special.rb

@@ -1,5 +1,6 @@
 require 'cairo'
 require 'squib/args/arg_loader'
+require 'squib/args/dir_validator'
 
 module Squib
   # @api private

lib/squib/graphics/hand.rb

@@ -5,25 +5,24 @@ module Squib
 
     # Draw cards in a fan.
     # @api private
-    def render_hand(range, radius, angle_range, trim, trim_radius, margin,
-                    fill_color, dir, file)
+    def render_hand(range, sheet, hand)
       cards       = range.collect { |i| @cards[i] }
       center_x    = width / 2.0
-      center_y    = radius + height
+      center_y    = hand.radius + height
       out_size    = 3.0 * center_y
-      angle_delta = (angle_range.last - angle_range.first) / cards.size
+      angle_delta = (hand.angle_range.last - hand.angle_range.first) / cards.size
       cxt = Cairo::Context.new(Cairo::RecordingSurface.new(0, 0, out_size, out_size))
       cxt.translate(out_size / 2.0, out_size / 2.0)
-      cxt.rotate(angle_range.first)
+      cxt.rotate(hand.angle_range.first)
       cxt.translate(-width, -width)
       cards.each_with_index do |card, i|
         cxt.translate(center_x, center_y)
         cxt.rotate(angle_delta)
         cxt.translate(-center_x, -center_y)
         card.use_cairo do |card_cxt|
-          cxt.rounded_rectangle(trim, trim,
-                                width - (2 * trim), height - (2 * trim),
-                                trim_radius, trim_radius)
+          cxt.rounded_rectangle(sheet.trim, sheet.trim,
+                                width - (2 * sheet.trim), height - (2 * sheet.trim),
+                                sheet.trim_radius, sheet.trim_radius)
           cxt.clip
           cxt.set_source(card_cxt.target)
           cxt.paint
@@ -31,13 +30,13 @@ module Squib
         end
       end
       x, y, w, h = cxt.target.ink_extents # I love Ruby assignment ;)
-      png_cxt = Squib::Graphics::CairoContextWrapper.new(Cairo::Context.new(Cairo::ImageSurface.new(w + 2*margin, h + 2*margin)))
-      png_cxt.set_source_squibcolor(fill_color)
+      png_cxt = Squib::Graphics::CairoContextWrapper.new(Cairo::Context.new(Cairo::ImageSurface.new(w + 2*sheet.margin, h + 2*sheet.margin)))
+      png_cxt.set_source_squibcolor(sheet.fill_color)
       png_cxt.paint
-      png_cxt.translate(-x + margin, -y + margin)
+      png_cxt.translate(-x + sheet.margin, -y + sheet.margin)
       png_cxt.set_source(cxt.target)
       png_cxt.paint
-      png_cxt.target.write_to_png("#{dir}/#{file}")
+      png_cxt.target.write_to_png sheet.full_filename
     end
   end
 end

spec/data/samples/hand.rb.txt

@@ -441,7 +441,7 @@ cairo: set_source([MockDouble])
 cairo: paint([])
 cairo: reset_clip([])
 cairo: restore([])
-cairo: set_source_color([:white])
+cairo: set_source_color(["white"])
 cairo: paint([])
 cairo: translate([75, 75])
 cairo: set_source([MockDouble])
@@ -530,7 +530,7 @@ cairo: set_source([MockDouble])
 cairo: paint([])
 cairo: reset_clip([])
 cairo: restore([])
-cairo: set_source_color([:white])
+cairo: set_source_color(["white"])
 cairo: paint([])
 cairo: translate([75, 75])
 cairo: set_source([MockDouble])