Cette barre de progression se « rempli » par fractions jusqu'à ce qu'elle soit pleine.
public class MyApplication : Gtk.Application {
Gtk.ProgressBar progress_bar;
protected override void activate () {
var window = new Gtk.ApplicationWindow (this);
window.set_title ("ProgressBar Example");
window.set_default_size (220, 20);
progress_bar = new Gtk.ProgressBar ();
window.add (progress_bar);
window.show_all ();
double fraction = 0.0;
progress_bar.set_fraction (fraction);
GLib.Timeout.add (500, fill);
}
bool fill () {
double fraction = progress_bar.get_fraction (); //get current progress
fraction += 0.1; //increase by 10% each time this function is called
progress_bar.set_fraction (fraction);
/* This function is only called by GLib.Timeout.add while it returns true; */
if (fraction < 1.0)
return true;
return false;
}
}
public int main (string[] args) {
var progress_bar_application = new MyApplication ();
int status = progress_bar_application.run (args);
return status;
}
Dans cet exemple, les éléments suivants sont utilisés :
Gtk.ProgressBar
GLib.Timeout