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|
#!/usr/bin/env ruby
#
# This sample code is a port of
# clutter-gtk/examples/gtk-clutter-test.c. The image file used in
# this sample code is copied from
# clutter-gtk/examples/redhand.png. They are licensed under the terms
# of the GNU Lesser General Public License, version 2.1 or (at your
# option) later.
#
# 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"
N_HANDS = 4
WINDOW_WIDTH = 400
WINDOW_HEIGHT = 400
RADIUS = 150
fade_p = false
fullscreen_p = false
pixbuf = GdkPixbuf::Pixbuf.new(:file => File.expand_path("redhand.png", File.dirname(__FILE__)))
window = Gtk::Window.new
window.set_default_size(WINDOW_WIDTH, WINDOW_HEIGHT)
window.title = "Clutter Embedding"
window.signal_connect("destroy") do
Gtk.main_quit
end
vbox = Gtk::Grid.new
vbox.orientation = :vertical
vbox.hexpand = true
vbox.vexpand = true
window.add(vbox)
clutter = ClutterGtk::Embed.new
vbox.add(clutter)
stage = clutter.stage
stage.background_color = Clutter::Color.new(:sky_blue_light)
label = Gtk::Label.new("This is a label")
vbox.add(label)
label.hexpand = true
button = Gtk::Button.new(:label => "This is a button...clicky")
button.signal_connect("clicked") do |_button|
fade_p = !fade_p
end
vbox.add(button)
button.hexpand = true
button = Gtk::Button.new(:label => "Fullscreen")
button.image = Gtk::Image.new(:stock => Gtk::Stock::FULLSCREEN, :size => :button)
button.signal_connect("clicked") do |_button|
if fullscreen_p
window.unfullscreen
fullscreen_p = false
else
window.fullscreen
fullscreen_p = true
end
end
vbox.add(button)
button.hexpand = true
button = Gtk::Button.new(:stock_id => Gtk::Stock::QUIT)
button.signal_connect("clicked") do |_button|
_button.destroy
end
vbox.add(button)
button.hexpand = true
group = Clutter::Actor.new
hands = []
N_HANDS.times do |i|
if i.zero?
hands[i] = ClutterGtk::Texture.new
hands[i].set_from_pixbuf(pixbuf)
else
hands[i] = Clutter::Clone.new(hands[0])
end
# Place around a circle
w = hands[0].width
h = hands[0].height
x = WINDOW_WIDTH / 2 + RADIUS * Math.cos(i * Math::PI / (N_HANDS / 2)) - w / 2
y = WINDOW_HEIGHT / 2 + RADIUS * Math.sin(i * Math::PI / (N_HANDS / 2)) - h / 2
hands[i].set_position(x, y)
# Add to our group group
group.add_child(hands[i])
end
# Add the group to the stage
stage.add_child(group)
constraint = Clutter::AlignConstraint.new(stage, :x_axis, 0.5)
group.add_constraint(constraint)
constraint = Clutter::AlignConstraint.new(stage, :y_axis, 0.5)
group.add_constraint(constraint)
stage.signal_connect("button-press-event") do |_stage, event|
x, y = event.coords
actor = _stage.get_actor_at_pos(:all, x, y)
if actor.is_a?(ClutterGtk::Texture) or actor.is_a?(Clutter::Clone)
actor.hide
end
Clutter::Event::STOP
end
stage.signal_connect("key-release-event") do |_stage, event|
puts("*** key press event (key:#{event.key_unicode}) ***")
case event.key_symbol
when Clutter::Keys::KEY_q
Gtk.main_quit
when Clutter::Keys::KEY_r
N_HANDS.times do |i|
hands[i].show
end
end
Clutter::Event::STOP
end
window.show_all
# Create a timeline to manage animation
timeline = Clutter::Timeline.new(6000)
timeline.repeat_count = -1
# fire a callback for frame change
timeline.signal_connect("new-frame") do |_timeline, msecs|
rotation = _timeline.progress * 360.0
group.set_rotation(:z_axis, rotation, WINDOW_WIDTH / 2, WINDOW_HEIGHT / 2, 0)
N_HANDS.times do |i|
hands[i].set_rotation(:z_axis,
-(6.0 * rotation),
hands[i].width / 2,
hands[i].height / 2,
0)
if fade_p
hands[i].opacity = (255 - (rotation % 255))
end
end
end
# and start it
timeline.start
Gtk.main
|
