artemave · February 10, 2023 21:08 · Nov 12, 2014 · Nov 12, 2014
diff --git a/carrierwave.rb b/carrierwave.rb
@@ -49,4 +49,6 @@ def round
 
 # somewhere in an uploader
 
-  process :round
+varsion :email do
+  process :round
+end
diff --git a/carrierwave.rb b/carrierwave.rb
@@ -0,0 +1,52 @@
+# config/initializers/carrierwave.rb
+
+require 'mini_magick'
+
+module CarrierWave
+  module MiniMagick
+    # round _square_ image
+    def round
+      manipulate! do |img|
+        img.format 'png'
+
+        width = img[:width]-2
+        radius = width/2
+
+        mask = ::MiniMagick::Image.open img.path
+        mask.format 'png'
+
+        mask.combine_options do |m|
+          m.alpha 'transparent'
+          m.background 'none'
+          m.fill 'white'
+          m.draw 'roundrectangle 1,1,%s,%s,%s,%s' % [width, width, radius, radius]
+        end
+
+        overlay = ::MiniMagick::Image.open img.path
+        overlay.format 'png'
+
+        overlay.combine_options do |o|
+          o.alpha 'transparent'
+          o.background 'none'
+          o.fill 'none'
+          o.stroke 'white'
+          o.strokewidth 2
+          o.draw 'roundrectangle 1,1,%s,%s,%s,%s' % [width, width, radius, radius]
+        end
+
+        masked = img.composite(mask, 'png') do |i|
+          i.alpha "set"
+          i.compose 'DstIn'
+        end
+
+        masked.composite(overlay, 'png') do |i|
+          i.compose 'Over'
+        end
+      end
+    end
+  end
+end
+
+# somewhere in an uploader
+
+  process :round