# ProgressBar (Vala)

Tiffany Antopolski
tiffany.antopolski@gmail.com 2012
A widget which indicates progress visually
Fran Dieguez
frandieguez@gnome.org 2012-2013.

# ProgressBar

This ProgressBar "fills in" by a fraction of the bar until it is full.

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; }

Neste exemplo empregaremos o seguinte:

Gtk.ProgressBar

GLib.Timeout