Un widget que muestra un mensaje amigable
#!/usr/bin/gjs
imports.gi.versions.Gtk = '3.0';
const Gio = imports.gi.Gio;
const GLib = imports.gi.GLib;
const Gtk = imports.gi.Gtk;
class LabelExample {
/* Create the application itself
This boilerplate code is needed to build any GTK+ application. */
constructor() {
this.application = new Gtk.Application ({
application_id: 'org.example.jslabel',
flags: Gio.ApplicationFlags.FLAGS_NONE
});
// Connect 'activate' and 'startup' signals to the callback functions
this.application.connect('activate', this._onActivate.bind(this));
this.application.connect('startup', this._onStartup.bind(this));
}
// Callback function for 'activate' signal presents windows when active
_onActivate() {
this._window.present();
}
// Callback function for 'startup' signal initializes menus and builds the UI
_onStartup() {
this._buildUI();
}
// Build the application's UI
_buildUI() {
// Create the application window
this._window = new Gtk.ApplicationWindow({
application: this.application,
window_position: Gtk.WindowPosition.CENTER,
title: "Welcome to GNOME",
default_height: 100,
default_width: 200
});
// Create the label
this.label = new Gtk.Label({ label: "Hello GNOME!" });
this._window.add(this.label);
// Show the window and all child widgets
this._window.show_all();
}
};
// Run the application
let app = new LabelExample ();
app.application.run (ARGV);
En este ejemplo se usa lo siguiente:
Gtk.Application
Gtk.ApplicationWindow
Gtk.Label