Class: Paperclip::PapermillPaperclipProcessor

Inherits:
Thumbnail
  • Object
show all
Defined in:
lib/papermill/papermill_paperclip_processor.rb

Overview

Handles thumbnailing images that are uploaded.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(file, options = {}, attachment = nil) ⇒ PapermillPaperclipProcessor

Returns a new instance of PapermillPaperclipProcessor.



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# File 'lib/papermill/papermill_paperclip_processor.rb', line 10

def initialize(file, options = {}, attachment = nil)
  @crop_h, @crop_w, @crop_x, @crop_y = options[:crop_h], options[:crop_w], options[:crop_x], options[:crop_y]
  
  # copyright extraction
  if options[:geometry] =~ /©/ || options[:copyright]
    options[:geometry], *@copyright = options[:geometry].split("©", -1)
    
    @copyright = (
      (options[:copyright] != true && options[:copyright]) || 
      @copyright.join("©").nie || 
      file.instance.respond_to?(:copyright) && file.instance.copyright.nie || 
      file.instance.papermill_options[:copyright].nie)
    
    if @copyright
      @copyright = (options[:copyright_text_transform] || file.instance.papermill_options[:copyright_text_transform]).try(:call, @copyright) || @copyright
    end
  end
  
  # watermark extraction
  if options[:watermark] || options[:geometry] =~ /\-wm/
    options[:geometry] = options[:geometry].chomp("-wm")
    @watermark_path = options[:watermark].is_a?(String) && options[:watermark] || file.instance.papermill_options[:watermark]
    @watermark_path = "#{RAILS_ROOT}/public" + @watermark_path if @watermark_path.starts_with?("/")
  end
  
  
  if options[:geometry] =~ /#.+/
    # let's parse :
    # <width>x<height>#<crop_w>x<crop_h>:<crop_x>:<crop_y>
    # <width>x<height>#<crop_w>x<crop_h>
    # <width>x<height>#<crop_x>:<crop_y>
    
    options[:geometry], manual_crop = options[:geometry].split("#")
    crop_dimensions, @crop_x, @crop_y = manual_crop.split("+")
    
    if crop_dimensions =~ /x/
      @crop_w, @crop_h = crop_dimensions.split("x")
    else
      @crop_x, @crop_y = crop_dimensions, @crop_x
    end

    options[:geometry] = (options[:geometry].nie || "#{@crop_x}x#{@crop_y}") + "#"
    
    unless @crop_w && @crop_h
      @target_geometry = Geometry.parse(options[:geometry]) 
      @crop_w ||= @target_geometry.try(:width).to_i
      @crop_h ||= @target_geometry.try(:height).to_i
    end
  end
  super
end

Instance Attribute Details

Returns the value of attribute copyright.



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# File 'lib/papermill/papermill_paperclip_processor.rb', line 8

def copyright
  @copyright
end

#crop_h ⇒ Object

Returns the value of attribute crop_h.



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# File 'lib/papermill/papermill_paperclip_processor.rb', line 8

def crop_h
  @crop_h
end

#crop_w ⇒ Object

Returns the value of attribute crop_w.



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# File 'lib/papermill/papermill_paperclip_processor.rb', line 8

def crop_w
  @crop_w
end

#crop_x ⇒ Object

Returns the value of attribute crop_x.



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# File 'lib/papermill/papermill_paperclip_processor.rb', line 8

def crop_x
  @crop_x
end

#crop_y ⇒ Object

Returns the value of attribute crop_y.



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# File 'lib/papermill/papermill_paperclip_processor.rb', line 8

def crop_y
  @crop_y
end

#watermark_path ⇒ Object

Returns the value of attribute watermark_path.



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# File 'lib/papermill/papermill_paperclip_processor.rb', line 8

def watermark_path
  @watermark_path
end

Instance Method Details



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# File 'lib/papermill/papermill_paperclip_processor.rb', line 66

def copyright_command
  (options[:copyright_im_command] || @file.instance.papermill_options[:copyright_im_command]).gsub(/%s/, @copyright.gsub(/'/, %{'"'"'}).sub("-slash-", "/").sub("-backslash-", %{\\\\\\})) if @copyright
end

#crop_command ⇒ Object 



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# File 'lib/papermill/papermill_paperclip_processor.rb', line 74

def crop_command
  if @crop_h || @crop_x
    " -crop '%dx%d+%d+%d'" % [ @crop_w, @crop_h, @crop_x, @crop_y ].map(&:to_i)
  end
end

#transformation_command ⇒ Object 



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# File 'lib/papermill/papermill_paperclip_processor.rb', line 62

def transformation_command
  " -limit memory 1 -limit map 1 #{(crop_command ? super.sub(/ -crop \S+/, crop_command) : super)} #{copyright_command} #{watermark_command}".sub(%{-resize "0x" }, "")
end

#watermark_command ⇒ Object 



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# File 'lib/papermill/papermill_paperclip_processor.rb', line 70

def watermark_command
  (options[:watermark_im_command] || @file.instance.papermill_options[:watermark_im_command]).gsub(/%s/, @watermark_path) if @watermark_path
end