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#!/usr/bin/env ruby
=begin
simpleanim.rb - Ruby/GdkPixbuf sample script for Gdk::PixbufSimpleAnim.
Inspired by http://mail.gnome.org/archives/gtk-perl-list/2005-September/msg00110.html
Copyright (c) 2002-2020 Ruby-GNOME Project Team
This program is licenced under the same licence as Ruby-GNOME.
$Id: simpleanim.rb,v 1.2 2006/06/17 14:38:08 mutoh Exp $
=end
require 'gtk3'
$stdout.sync = true
simple_anim = GdkPixbuf::PixbufSimpleAnim.new(64, 64, 24)
store_pixels = []
print 'generating frames'
for red in 0 .. 126
store_pixels << pixels = ([ 4*(63-red).abs, 0, 0 ] * (64*64)).pack('C*')
pixbuf = GdkPixbuf::Pixbuf.new(:data => pixels,
:colorspace => :rgb,
:has_alpha =>false,
:bits_per_sample => 8,
:width => 64,
:height => 64,
:row_stride => 64*3)
simple_anim.add_frame(pixbuf)
print '.'
end
puts 'done'
window = Gtk::Window.new
image = Gtk::Image.new(animation: simple_anim)
window.add(image)
window.show_all
window.signal_connect('destroy') { Gtk.main_quit }
Gtk.main
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