merged in from code from the other master

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

module RedArtisan
  module CoreImage
    module Filters
      module Watermark
        
        def watermark(watermark_image, tile = false, strength = 0.1)
          create_core_image_context(@original.extent.size.width, @original.extent.size.height)
          
          if watermark_image.respond_to? :to_str
            watermark_image = OSX::CIImage.from(watermark_image.to_str)
          end
          
          if tile
            tile_transform = OSX::NSAffineTransform.transform
            tile_transform.scaleXBy_yBy 1.0, 1.0
            
            watermark_image.affine_tile :inputTransform => tile_transform do |tiled|
              tiled.crop :inputRectangle => vector(0, 0, @original.extent.size.width, @original.extent.size.height) do |tiled_watermark|
                watermark_image = tiled_watermark
              end
            end
          end
          
          @original.dissolve_transition :inputTargetImage => watermark_image, :inputTime => strength do |watermarked|
            @target = watermarked
          end
        end

      end
    end
  end
end