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//!/usr/bin/gjs
imports.gi.versions.Gtk = '3.0';
const Gtk = imports.gi.Gtk;
class FontChooserWidgetExample {
// Create the application itself
constructor() {
this.application = new Gtk.Application({ application_id: 'org.example.fontchooserwidget' });
// 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 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: "FontChooserWidget",
default_width: 200,
default_height: 200,
border_width: 10 });
this.fontChooser = new Gtk.FontChooserWidget();
// a default font
this.fontChooser.set_font("Sans");
// a text to preview the font
this.fontChooser.set_preview_text("This is an example of preview text!");
// connect signal from the font chooser to the callback function
this.fontChooser.connect("notify::font", this._fontCb.bind(this));
// add the font chooser to the window
this.window.add(this.fontChooser);
this.window.show_all();
}
// callback function:
_fontCb() {
// print in the terminal
print("You chose the font " + this.fontChooser.get_font());
}
};
// Run the application
let app = new FontChooserWidgetExample();
app.application.run (ARGV);
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