using Gtk;
using Gst;

public class player_window : Window
{
    private DrawingArea drawing_area = new DrawingArea();
    private bool state = false;
    private Element sink = ElementFactory.make ("xvimagesink", "sink");
    private dynamic Element playbin = ElementFactory.make("playbin2", "playbin");

    public player_window()
    {
        create_widgets();
    }

    public void create_widgets()
    {
        title = "My Fiwst Pwogwam";
        ToolButton open_button = new ToolButton.from_stock (Stock.OPEN);
        ToolButton play_button = new ToolButton.from_stock (Stock.MEDIA_PLAY);
        ToolButton forward_button = new ToolButton.from_stock (Stock.MEDIA_FORWARD);
        ToolButton rewind_button = new ToolButton.from_stock (Stock.MEDIA_REWIND);
        Box vbox = new Box(Orientation.VERTICAL, 3);
        Box hbox = new Box(Orientation.HORIZONTAL, 2);
        Box seekbox = new Box(Orientation.HORIZONTAL, 2);
        drawing_area.set_size_request(320, 240);
        hbox.pack_start(open_button, true, true, 0);
        hbox.pack_start(play_button, true, true, 0);
        seekbox.pack_start(rewind_button, true, true, 0);
        seekbox.pack_start(forward_button, true, true, 0);
        vbox.pack_start(drawing_area, true, true, 0);
        vbox.pack_start(seekbox, false, true, 0);
        vbox.pack_start(hbox, false, true, 0);
        add(vbox);
        play_button.clicked.connect(on_play);
        open_button.clicked.connect(on_open);
        rewind_button.clicked.connect(() => {on_seek(-5);});
        forward_button.clicked.connect(() => {on_seek(5);});
        destroy.connect (Gtk.main_quit);
    }

    public void on_seek(int seek)
    {
        if (state)
        {
            Format fmt = Format.TIME;
            int64 pos = 0;
            playbin.query_position(ref fmt, out pos);
            playbin.seek_simple(Format.TIME, SeekFlags.FLUSH | SeekFlags.ACCURATE, (pos + (seek * SECOND)));
        }
    }

    public void on_play()
    {
        if (state)
        {
            playbin.set_state(State.PAUSED);
            state = false;
        }
        else
        {
            playbin.set_state (State.PLAYING);
            state = true;
        }
    }

    public void create_playbin(string uri)
    {
        playbin.set_state(State.READY);
        playbin.uri = uri;
        playbin.video_sink = sink;
        sink.set("force-aspect-ratio", true);
        ((XOverlay) sink).set_xwindow_id (Gdk.X11Window.get_xid (drawing_area.get_window ()));
    }

    public void on_open()
    {
        var file_chooser = new FileChooserDialog("Select media", this, FileChooserAction.OPEN, Stock.CANCEL, ResponseType.CANCEL, Stock.OPEN, ResponseType.ACCEPT, null);
        if (file_chooser.run() == ResponseType.ACCEPT) create_playbin(file_chooser.get_uri());
        file_chooser.destroy();
    }

}

public static int main(string[] args)
{
    Gtk.init(ref args);
    Gst.init(ref args);
    var app = new player_window();
    app.show_all();
    Gtk.main();
    return 0;
}