class Vips::Target
A target. For example:
“‘ruby target = Vips::Target.new_to_file
(’k2.jpg’) image.write_to_target(target, ‘.jpg’) “‘
Public Class Methods
Create a new target to a file descriptor. File descriptors are small integers, for example 1 is stdout.
Pass targets to {Image#write_to_target} to write images to them.
@param descriptor [Integer] the file descriptor @return [Target] the new Vips::Target
# File lib/vips/target.rb, line 49 def self.new_to_descriptor(descriptor) ptr = Vips::vips_target_new_to_descriptor descriptor raise Vips::Error if ptr.null? Vips::Target.new ptr end
Create a new target to a file name.
Pass targets to {Image#write_to_target} to write images to them.
@param filename [String] the name of the file @return [Target] the new Vips::Target
# File lib/vips/target.rb, line 63 def self.new_to_file(filename) raise Vips::Error, 'filename is nil' if filename.nil? ptr = Vips::vips_target_new_to_file filename raise Vips::Error if ptr.null? Vips::Target.new ptr end
Create a new target to an area of memory.
Pass targets to {Image#write_to_target} to write images to them.
Once the image has been written, use {Object#get}‘(“blob”)` to read out the data.
@return [Target] the new Vips::Target
# File lib/vips/target.rb, line 80 def self.new_to_memory ptr = Vips::vips_target_new_to_memory Vips::Target.new ptr end