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#!/usr/bin/gjs
var Gtk = imports.gi.Gtk;
var Gst = imports.gi.Gst;
const Mainloop = imports.mainloop;
Gtk.init(null, 0);
Gst.init(null, 0);
var guitarwindow = new Gtk.Window({type: Gtk.WindowType.TOPLEVEL, border_width: 100});
guitarwindow.title = "Guitar Tuner";
guitarwindow.connect("destroy", function(){Gtk.main_quit()});
var guitar_box = new Gtk.ButtonBox ({orientation: Gtk.Orientation.VERTICAL, spacing: 10});
var E = new Gtk.Button({label: "E"});
var A = new Gtk.Button({label: "A"});
var D = new Gtk.Button({label: "D"});
var G = new Gtk.Button({label: "G"});
var B = new Gtk.Button({label: "B"});
var e = new Gtk.Button({label: "e"});
var frequencies = {E: 369.23, A: 440, D: 587.33, G: 783.99, B: 987.77, e: 1318.5}
function playSound(frequency){
var pipeline = new Gst.Pipeline({name: "note"});
var source = new Gst.ElementFactory.make("audiotestsrc","source");
var sink = new Gst.ElementFactory.make("autoaudiosink","output");
source.set_property('freq', frequency);
pipeline.add(source);
pipeline.add(sink);
source.link(sink);
pipeline.set_state(Gst.State.PLAYING);
Mainloop.timeout_add(500, function () {
pipeline.set_state(Gst.State.PAUSED);
return false;
});
}
E.connect("clicked", function() {
playSound(frequencies.E);
});
A.connect("clicked", function(){
playSound(frequencies.A);
});
D.connect("clicked", function(){
playSound(frequencies.D);
});
G.connect("clicked", function(){
playSound(frequencies.G);
});
B.connect("clicked", function(){
playSound(frequencies.B);
});
e.connect("clicked", function(){
playSound(frequencies.e);
});
guitar_box.add(E);
guitar_box.add(A);
guitar_box.add(D);
guitar_box.add(G);
guitar_box.add(B);
guitar_box.add(e);
guitarwindow.add(guitar_box);
guitar_box.show_all();
guitarwindow.show();
Gtk.main();
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