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/* -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
namespace Baobab {
public class CrossFadeNotebook : Gtk.Grid, Gtk.Buildable {
Gtk.Widget current_page = null;
GtkClutter.Embed embed;
construct {
embed = new GtkClutter.Embed ();
add (embed);
embed.show ();
vexpand = false;
hexpand = false;
GtkClutter.embed_set_use_layout_size (embed, true);
var stage = embed.get_stage ();
stage.set_layout_manager (new Clutter.BinLayout (Clutter.BinAlignment.FILL, Clutter.BinAlignment.FILL));
}
public void add_page (Gtk.Widget widget) {
var actor = new GtkClutter.Actor.with_contents (widget);
widget.set_data ("clutter_actor", actor);
embed.get_stage ().add_child (actor);
select_page (widget);
}
public void select_page (Gtk.Widget widget) {
if (current_page == widget) {
return;
}
if (current_page != null) {
var cur_actor = current_page.get_data<Clutter.Actor> ("clutter_actor");
cur_actor.reactive = false;
cur_actor.save_easing_state ();
cur_actor.set_easing_duration (500);
cur_actor.opacity = 0;
cur_actor.restore_easing_state ();
}
var actor = widget.get_data<Clutter.Actor> ("clutter_actor");
actor.reactive = true;
actor.save_easing_state ();
actor.set_easing_duration (500);
actor.opacity = 0xff;
actor.restore_easing_state ();
current_page = widget;
}
// GtkBuildable interface
public void add_child (Gtk.Builder builder, Object child, string? type) {
add_page (child as Gtk.Widget);
}
}
}
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