updated top the the new version of attachment_fu plugin to work out some

[selectricity-live] / vendor / plugins / attachment_fu / vendor / red_artisan / core_image / filters / scale.rb

diff --git a/vendor/plugins/attachment_fu/vendor/red_artisan/core_image/filters/scale.rb b/vendor/plugins/attachment_fu/vendor/red_artisan/core_image/filters/scale.rb
new file mode 100644 (file)
index 0000000..f729b59
--- /dev/null
+++ b/vendor/plugins/attachment_fu/vendor/red_artisan/core_image/filters/scale.rb
@@ -0,0 +1,47 @@
+module RedArtisan
+  module CoreImage
+    module Filters
+      module Scale
+        
+        def resize(width, height)
+          create_core_image_context(width, height)
+
+          scale_x, scale_y = scale(width, height)
+
+          @original.affine_clamp :inputTransform => OSX::NSAffineTransform.transform do |clamped|
+            clamped.lanczos_scale_transform :inputScale => scale_x > scale_y ? scale_x : scale_y, :inputAspectRatio => scale_x / scale_y do |scaled|
+              scaled.crop :inputRectangle => vector(0, 0, width, height) do |cropped|
+                @target = cropped
+              end
+            end
+          end
+        end
+
+        def thumbnail(width, height)
+          create_core_image_context(width, height)
+
+          transform = OSX::NSAffineTransform.transform
+          transform.scaleXBy_yBy *scale(width, height)
+
+          @original.affine_transform :inputTransform => transform do |scaled|
+            @target = scaled
+          end
+        end
+
+        def fit(size)
+          original_size = @original.extent.size
+          scale = size.to_f / (original_size.width > original_size.height ? original_size.width : original_size.height)
+          resize (original_size.width * scale).to_i, (original_size.height * scale).to_i
+        end
+        
+        private
+        
+          def scale(width, height)
+            original_size = @original.extent.size
+            return width.to_f / original_size.width.to_f, height.to_f / original_size.height.to_f
+          end
+          
+      end
+    end
+  end
+end
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