smart packing inital implimentation

lib/compass/sass_extensions/sprites/base.rb

@@ -1,8 +1,11 @@
+require 'compass/sass_extensions/sprites/helpers/image_helper'
+require 'compass/sass_extensions/sprites/helpers/processing_helper'
 module Compass
   module SassExtensions
     module Sprites
       class Base < Sass::Script::Literal
-        
+        include ImageHelper
+        include ProcessingHelper
         
         # Initialize a new aprite object from a relative file path
         # the path is relative to the <tt>images_path</tt> confguration option
@@ -34,6 +37,7 @@ module Compass
           @name = sprite_map.name
           @kwargs = kwargs
           @kwargs['cleanup'] ||= Sass::Script::Bool.new(true)
+          @kwargs['smart_pack'] ||= Sass::Script::Bool.new(false)
           @images = nil
           @width = nil
           @height = nil
@@ -43,10 +47,7 @@ module Compass
           compute_image_metadata!
         end
 
-        # Calculate the size of the sprite
+       
-        def size
-          [width, height]
-        end
       
         # Calculates the overal image dimensions
         # collects image sizes and input parameters for each sprite
@@ -70,53 +71,13 @@ module Compass
         # Calculates the overal image dimensions
         # collects image sizes and input parameters for each sprite
         def compute_image_positions!
-          fitter = ::Compass::SassExtensions::Sprites::RowFitter.new(@images)
+          if kwargs.get_var('smart-pack').value
-
+            smart_packing
-          current_y = 0
+          else
-          fitter.fit!.each do |row|
+            legacy_packing
-            current_x = 0
-            row.images.each_with_index do |image, index|
-              image.left = current_x
-              image.top = current_y
-              current_x += image.width
-              image.left = image.position.unit_str == "%" ? (@width - image.width) * (image.position.value / 100) : image.position.value
           end
-            current_y += row.height
         end
         
-          # @images.each_with_index do |image, index|
-          #   image.left = image.position.unit_str == "%" ? (@width - image.width) * (image.position.value / 100) : image.position.value
-          #   next if index == 0
-          #   last_image = @images[index-1]
-          #   image.top = last_image.top + last_image.height + [image.spacing,  last_image.spacing].max
-          #   last_image = image
-          # end
-        end
-        
-        # Fetches the Sprite::Image object for the supplied name
-        def image_for(name)
-          @images.detect { |img| img.name == name}
-        end
-        
-        # Returns true if the image name has a hover selector image
-        def has_hover?(name)
-          !image_for("#{name}_hover").nil?
-        end
-        
-        # Returns true if the image name has a target selector image
-        def has_target?(name)
-          !image_for("#{name}_target").nil?
-        end
-        
-        # Returns true if the image name has an active selector image
-        def has_active?(name)
-          !image_for("#{name}_active").nil?
-        end
-        
-        # Return and array of image names that make up this sprite
-        def sprite_names
-          image_names.map { |f| File.basename(f, '.png') }
-        end
         
 
         # Validates that the sprite_names are valid sass

lib/compass/sass_extensions/sprites/sprite_map.rb

@@ -116,8 +116,9 @@ $#{name}-spacing: 0 !default;
 $#{name}-repeat: no-repeat !default;
 $#{name}-prefix: '' !default;
 $#{name}-clean-up: true !default;
+$#{name}-smart-pack: false !default;
 
-#{skip_overrides ? "$#{name}-sprites: sprite-map(\"#{uri}\", $cleanup: $#{name}-clean-up);" : generate_overrides }
+#{skip_overrides ? "$#{name}-sprites: sprite-map(\"#{uri}\", $smart-pack: $#{name}-smart-pack, $cleanup: $#{name}-clean-up);" : generate_overrides }
 
 // All sprites should extend this class
 // The #{name}-sprite mixin will do so for you.
@@ -171,7 +172,7 @@ $#{name}-#{sprite_name}-repeat: $#{name}-repeat !default;
         SCSS
       end.join
 
-      content += "\n$#{name}-sprites: sprite-map(\"#{uri}\", \n$cleanup: $#{name}-clean-up,\n"
+      content += "\n$#{name}-sprites: sprite-map(\"#{uri}\", \n $smart-pack: $#{name}-smart-pack, $cleanup: $#{name}-clean-up,\n"
       content += sprite_names.map do |sprite_name| 
 %Q{  $#{sprite_name}-position: $#{name}-#{sprite_name}-position,
   $#{sprite_name}-spacing: $#{name}-#{sprite_name}-spacing,

test/units/sprites/base_test.rb

@@ -1,7 +1,7 @@
 require 'test_helper'
 
 class SpritesBaseTest < Test::Unit::TestCase
-  
+  attr_accessor :options
   def setup
     Hash.send(:include, Compass::SassExtensions::Functions::Sprites::VariableReader)
     @images_src_path = File.join(File.dirname(__FILE__), '..', '..', 'fixtures', 'sprites', 'public', 'images')
@@ -11,12 +11,12 @@ class SpritesBaseTest < Test::Unit::TestCase
     config.images_path = @images_tmp_path
     Compass.add_configuration(config)
     Compass.configure_sass_plugin!
-    @options = {'cleanup' => Sass::Script::Bool.new(true)}
+    @options = {'cleanup' => Sass::Script::Bool.new(true), 'smart_pack' => Sass::Script::Bool.new(false)}
     setup_map
   end
   
   def setup_map
-    @map = Compass::SpriteMap.new(:uri => "selectors/*.png", :options => @options)
+    @map = Compass::SpriteMap.new(:uri => "selectors/*.png", :options => options)
     @base = Compass::SassExtensions::Sprites::Base.new(@map.sprite_names.map{|n| "selectors/#{n}.png"}, @map, @map.sass_engine, @map.options)
   end
 

test/units/sprites/image_test.rb

@@ -19,7 +19,7 @@ class SpritesImageTest < Test::Unit::TestCase
   let(:sprite_name) { File.basename(sprite_filename, '.png') }
   
   def parent
-    map = Compass::SpriteMap.new(:uri => "selectors/*.png", :options => options)
+    map = Compass::SpriteMap.new(:uri => "selectors/*.png", :options => {'cleanup' => Sass::Script::Bool.new(true), 'smart_pack' => Sass::Script::Bool.new(false)})
     @parent ||= Compass::SassExtensions::Sprites::Base.new(map.sprite_names.map{|n| "selectors/#{n}.png"}, map, map.sass_engine, map.options)
   end
   
@@ -30,6 +30,7 @@ class SpritesImageTest < Test::Unit::TestCase
     options.stubs(:get_var).with("#{sprite_name}-repeat").returns(::OpenStruct.new(:value => @repeat))
     options.stubs(:get_var).with("#{sprite_name}-spacing").returns(::OpenStruct.new(:value => @spacing))
     options.stubs(:get_var).with("#{sprite_name}-position").returns(::OpenStruct.new(:value => @position))
+    options.stubs(:get_var).with('smart_pack').returns(Sass::Script::Bool.new(false))
     options
   end