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#!/usr/bin/env ruby
#
# This sample code is a port of clutter-gtk/examples/gtk-clutter-window-test2.c.
# It is licensed under the terms of the GNU Lesser General Public
# License, version 2.1 or (at your option) later.
#
# The original header:
# (c) 2009, Collabora Ltd.
#
# Written by Davyd Madeley <davyd.madeley@collabora.co.uk>
#
# Copyright (C) 2013 Ruby-GNOME2 Project Team
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
require "clutter-gtk"
require "gdk_pixbuf2"
window = ClutterGtk::Window.new
table = Gtk::Grid.new
table.hexpand = true
table.vexpand = true
add_button = lambda do |stock_id, row|
button = Gtk::Button.new(:stock_id => stock_id)
table.insert_row(row)
table.insert_column(row)
table.attach(button, row, row, 1, 1)
button.signal_connect("clicked") do |_button|
puts("button clicked: #{stock_id}")
toplevel = _button.toplevel
if toplevel.is_a?(ClutterGtk::Window)
# create a texture from the button image
texture = ClutterGtk::Texture.new
image = _button.image
size = image.icon_size
texture.set_from_stock(_button, stock_id.to_s, size)
# position the texture on top of the existing icon
stage = toplevel.stage
stage.add_actor(texture)
allocation = image.allocation
# replace the icon itself
blank = GdkPixbuf::Pixbuf.new(:colorspace => :rgb,
:has_alpha => true,
:bits_per_sample => 8,
:width => allocation.width,
:height => allocation.height)
blank.fill!(0x00000000)
image.pixbuf = blank
# animate a fall due to gravity
toplevel_allocation = toplevel.allocation
texture.save_easing_state do
texture.easing_mode = :ease_in_quad
texture.easing_duration = 200
texture.set_final_state("x", allocation.x.to_f)
texture.set_final_state("y", allocation.y.to_f)
texture.y = toplevel_allocation.height.to_f
end
first_completed_id = texture.signal_connect_after("transitions-completed") do
image_allocation = image.allocation
# do the second animation, have the icon grow out from the middle of the
# button
texture.save_easing_state do
texture.easing_mode = :ease_out_sine
texture.easing_duration = 100
texture.set_final_state("x", image_allocation.x.to_f)
texture.set_final_state("y", image_allocation.y.to_f)
texture.set_final_state("scale-x", 0.0)
texture.set_final_state("scale-y", 0.0)
texture.scale_x = 1.0
texture.scale_y = 1.0
texture.set_final_state("scale-gravity", Clutter::Gravity::CENTER)
end
texture.signal_handler_disconnect(first_completed_id)
second_completed_id = texture.signal_connect_after("transitions-completed") do
# undo our changes
puts("set stock = #{stock_id}, size = #{size}")
image.icon_size = size
image.stock = stock_id
texture.signal_handler_disconnect(second_completed_id)
texture.destroy
end
end
end
end
end
add_button.call(Gtk::Stock::OK, 0)
add_button.call(Gtk::Stock::CANCEL, 1)
add_button.call(Gtk::Stock::CLOSE, 2)
add_button.call(Gtk::Stock::ABOUT, 3)
add_button.call(Gtk::Stock::BOLD, 4)
add_button.call(Gtk::Stock::ITALIC, 5)
window.add(table)
window.show_all
# override the gtk-button-images setting, since we kind
# of rely on this to be true to actually show the stock
# icon falling off the button
settings = window.settings
settings.gtk_button_images = true
window.signal_connect("destroy") do
Gtk.main_quit
end
Gtk.main
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