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#!/usr/bin/gjs
const GObject = imports.gi.GObject;
const Gtk = imports.gi.Gtk;
const Lang = imports.lang;
const ScrolledWindowExample = new Lang.Class ({
Name: 'ScrolledWindow Example',
// Create the application itself
_init: function () {
this.application = new Gtk.Application({ application_id: 'org.example.jscrolledwindow' });
// Connect 'activate' and 'startup' signals to the callback functions
this.application.connect('activate', Lang.bind(this, this._onActivate));
this.application.connect('startup', Lang.bind(this, this._onStartup));
},
// Callback function for 'activate' signal presents windows when active
_onActivate: function() {
this.window.present();
},
// Callback function for 'startup' signal builds the UI
_onStartup: function() {
this._buildUI ();
},
// Build the application's UI
_buildUI: function() {
// Create the application window
this.window = new Gtk.ApplicationWindow ({ application: this.application,
window_position: Gtk.WindowPosition.CENTER,
title: "ScrolledWindow Example",
default_width: 200,
default_height: 200,
border_width: 10 });
// the scrolledwindow
this.scrolledWindow = new Gtk.ScrolledWindow();
this.scrolledWindow.set_border_width(10);
// there is always the scrollbar (otherwise: AUTOMATIC - only if needed - or NEVER)
this.scrolledWindow.set_policy(Gtk.PolicyType.ALWAYS, Gtk.PolicyType.ALWAYS);
// an image - slightly larger than the window
this.image = new Gtk.Image();
this.image.set_from_file("gnome-image.png");
// add the image to the scrolledwindow
this.scrolledWindow.add_with_viewport(this.image);
// add the scrolledwindow to the window
this.window.add(this.scrolledWindow);
this.window.show_all();
}
});
// Run the application
let app = new ScrolledWindowExample();
app.application.run (ARGV);
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