Method: PSD::LayerMask#parse

Defined in:
lib/psd/layer_mask.rb

#parse ⇒ Object

Parse this section, including all of the layers and folders. Once implemented, this will also trigger parsing of the channel images for each layer.



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# File 'lib/psd/layer_mask.rb', line 30

def parse
  start_section

  mask_size = @file.read_int
  finish = @file.tell + mask_size

  return self if mask_size <= 0

  layer_info_size = Util.pad2(@file.read_int)

  if layer_info_size > 0
    layer_count = @file.read_short

    if layer_count < 0
      layer_count = layer_count.abs
      @merged_alpha = true
    end

    if layer_count * (18 + 6 * @header.channels) > layer_info_size
      raise "Unlikely number of layers parsed: #{layer_count}"
    end

    @layer_section_start = @file.tell
    layer_count.times do
      @layers << PSD::Layer.new(@file, @header).parse
    end

    layers.each do |layer|
      @file.seek 8, IO::SEEK_CUR and next if layer.folder? || layer.folder_end?
      layer.parse_channel_image(@header, @options[:parse_layer_images])
    end
  end

  # Layers are parsed in reverse order
  layers.reverse!
  group_layers

  parse_global_mask

  # Ensure we're at the end of this section
  @file.seek finish
  end_section

  return self
end