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#!/usr/bin/env ruby
#
# This sample code is a port of clutter/examples/box-layout.c.
# The original header:
# Copyright 2009 Intel Corporation.
#
# This program is free software; you can redistribute it and/or modify it
# under the terms and conditions of the GNU Lesser General Public License,
# version 2.1, as published by the Free Software Foundation.
#
# This program is distributed in the hope 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 program; if not, write to the Free Software Foundation,
# Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
# Boston, MA 02111-1307, USA.
#
# Copyright (C) 2012 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, version 2.1, as published by the Free Software Foundation.
#
# 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"
stage = Clutter::Stage.new
stage.title = "Box Layout"
stage.user_resizable = true
layout = Clutter::BoxLayout.new
layout.orientation = :vertical
stage.layout_manager = layout
box = Clutter::Actor.new
box.background_color = Clutter::Color.get_static(:light_gray)
box.x_expand = true
box.y_expand = true
layout = Clutter::BoxLayout.new
box.layout_manager = layout
stage.add_child(box)
instructions_label = [
"Press v\t\342\236\236\tSwitch horizontal/vertical",
"Press h\t\342\236\236\tToggle homogeneous",
"Press p\t\342\236\236\tToggle pack start/end",
"Press s\t\342\236\236\tIncrement spacing (up to 12px)",
"Press +\t\342\236\236\tAdd a new actor",
"Press a\t\342\236\236\tToggle animations",
"Press q\t\342\236\236\tQuit"
].join("\n")
instructions = Clutter::Text.new("Sans 12px", instructions_label)
instructions.x_expand = true
instructions.y_expand = false
instructions.x_align = :start
instructions.margin_top = 4
instructions.margin_left = 4
instructions.margin_bottom = 4
stage.add_child(instructions)
add_actor = lambda do |_box, position|
color = Clutter::Color.hls(rand * 360, 0.5, 0.5)
layout = Clutter::BinLayout.new(:center, :center)
rect = Clutter::Actor.new
rect.layout_manager = layout
rect.background_color = color
rect.reactive = true
rect.set_size(32, 64)
rect.x_expand = true
rect.y_expand = true
rect.x_align = :center
rect.y_align = :center
text = Clutter::Text.new("Sans 8px", "")
text.line_alignment = :center
rect.add_child(text)
rect.signal_connect("button-release-event") do |_rect, event|
x_align = _rect.x_align
y_align = _rect.y_align
x_expand = _rect.x_expand?
y_expand = _rect.y_expand?
case event.button
when Clutter::BUTTON_PRIMARY
aligns = Clutter::ActorAlign.values
if event.has_shift_modifier?
y_align = aligns[(aligns.index(y_align) + 1) % aligns.size]
else
x_align = aligns[(aligns.index(x_align) + 1) % aligns.size]
end
when Clutter::BUTTON_SECONDARY
if event.has_shift_modifier?
y_expand = !y_expand
else
x_expand = !x_expand
end
end
_rect.x_align = x_align
_rect.y_align = y_align
_rect.x_expand = x_expand
_rect.y_expand = y_expand
true
end
changed = lambda do |actor, pspec|
x_align = actor.x_align
y_align = actor.y_align
x_expand = actor.x_expand?
y_expand = actor.y_expand?
label = ["#{x_expand},#{y_expand}", x_align.nick, y_align.nick].join("\n")
end
rect.signal_connect("notify::x-align", &changed)
rect.signal_connect("notify::y-align", &changed)
rect.signal_connect("notify::x-expand", &changed)
rect.signal_connect("notify::y-expand", &changed)
changed.call(rect, nil)
_box.insert_child_at_index(rect, position)
end
5.times do |i|
add_actor.call(box, i)
end
stage.signal_connect("destroy") do
Clutter.main_quit
end
stage.signal_connect("key-release-event") do |_stage, event|
layout = box.layout_manager
handled = true
case event.key_symbol
when Clutter::Keys::KEY_a
iter = Clutter::ActorIter.new(box)
iter.each do |child|
duration = child.easing_duration
if duration.zero?
duration = 250
else
duration = 0
end
child.easing_duration = duration
end
when Clutter::Keys::KEY_v
orientation = layout.orientation
if orientation == Clutter::Orientation::HORIZONTAL
orientation = :vertical
else
orientation = :horizontal
end
layout.orientation = orientation
when Clutter::Keys::KEY_h
layout.homogeneous = !layout.homogeneous?
when Clutter::Keys::KEY_p
layout.pack_start = !layout.pack_start?
when Clutter::Keys::KEY_s
spacing = layout.spacing
if spacing > 12
spacing = 0
else
spacing += 1
end
layout.spacing = spacing
when Clutter::Keys::KEY_plus
add_actor.call(box, rand(box.n_children))
when Clutter::Keys::KEY_q
Clutter.main_quit
else
handled = false
end
handled
end
stage.show
Clutter.main
|
