class Vips::TargetCustom

Overview

Target you can connect handlers to implement behavior.

Direct Known Subclasses

Defined in:

vips/target.cr

Constructors

Instance Method Summary

Instance methods inherited from class Vips::Target

blob : Bytes blob

Class methods inherited from class Vips::Target

new_to_descriptor(descriptor : Int32) new_to_descriptor, new_to_file(filename : String) new_to_file, new_to_memory new_to_memory

Instance methods inherited from class Vips::Connection

filename : String | Nil filename, nick : String | Nil nick

Instance methods inherited from class Vips::VipsObject

get(name : String) get, get_blurb(name : String) get_blurb, get_description get_description, get_pspec(name : String) : LibVips::GParamSpec | Nil get_pspec, get_typeof(name : String) get_typeof, post_close(&block : -> ) post_close, print_all print_all, set(gtype, name, value)
set(options : String) set

Instance methods inherited from class Vips::GObject

get(name : String, gval : GValue) get, object_ref object_ref, ref_count ref_count, release_handle release_handle, set(name : String, gval : GValue) set, signal_connect(signal : String, callback : Proc, data : Pointer(Void) = Pointer(Void).null) : LibVips::Gulong signal_connect, signal_disconnect(handler_id : LibVips::Gulong)
signal_disconnect(func : Proc, data : Pointer(Void) = Pointer(Void).null)
signal_disconnect(data : LibVips::Gpointer) signal_disconnect

Constructor Detail

def self.new #

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Instance Method Detail

def on_finish(&block : -> ) #

The block is executed at the end of write. It should do any necessary finishing action, such as closing a file or flushing IO


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def on_write(&block : Bytes -> Int64) #

The block is executed to write data to the target. The interface is exactly as IO::write, ie. it should write the bytes and return the number of bytes written.


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