module Asposeimagingjava::SpecifyBitdepthForPngImage
Public Class Methods
new()
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# File lib/asposeimagingjava/images/specifybitdepthforpngimage.rb, line 3 def initialize() data_dir = File.dirname(File.dirname(File.dirname(File.dirname(__FILE__)))) + '/data/' # Load an existing image (of type bmp) in an instance of Image class image = Rjb::import('com.aspose.imaging.Image').load(data_dir + "sample.png") # Create an instance of PngOptions options = Rjb::import('com.aspose.imaging.imageoptions.PngOptions').new # Set the desired ColorType options.setColorType(Rjb::import('com.aspose.imaging.fileformats.png.PngColorType').Grayscale) # Set the BitDepth according to the specified ColorType options.setBitDepth(1) # Save the result on disc image.save(data_dir + "specify_bitdepth.png", options) # Display Status. puts "Specified bit depth for PNG image successfully!" end