Module: PSD::Image::Export::PNG

Included in:
PSD::Image
Defined in:
lib/psd/image_exports/png.rb

Overview

PNG image export. This is the default export format.

Instance Method Summary collapse

Instance Method Details

#save_as_png(file) ⇒ Object

Saves the PNG data to disk.



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# File 'lib/psd/image_exports/png.rb', line 26

def save_as_png(file)
  to_png.save(file, :fast_rgba)
end

#to_png ⇒ Object Also known as: export

Load the image pixels into a PNG file and return a reference to the data.



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# File 'lib/psd/image_exports/png.rb', line 7

def to_png
  return @png if @png

  PSD.logger.debug "Beginning PNG export"
  @png = ChunkyPNG::Canvas.new(width.to_i, height.to_i, ChunkyPNG::Color::TRANSPARENT)

  i = 0
  height.times do |y|
    width.times do |x|
      @png[x, y] = @pixel_data[i]
      i += 1
    end
  end

  @png
end