function RGB(r,g,b){ return (0xff000000|(r<<16)|(g<<8)|(b)); }

var font = gdi.Font("ProFontWindows", 9, 0);
var g_drag = 0;

var color =
{
    background: RGB(27, 27, 27),
    frame:      RGB(27, 27, 27),
    //progress:   RGB(143, 99, 153), // DARK.COLOR.1
    progress:   RGB(111, 153, 180),
    //proghead:   RGB(9, 226, 229)   // LIGHT.COLOR.2
    proghead:   RGB(219, 219, 219)
};

var barChar =
{
    back:      "▬",
    body:      "▬",
    head:      "▪"
};

function on_paint(e)
{
    e.SetTextRenderingHint(1);

    var ww         = window.Width,
        wh         = window.Height,
        pos        = ww * fb.PlaybackTime / (fb.PlaybackLength == 0 ? 1 : fb.PlaybackLength),
        background = barChar.back,
        progress   = barChar.body,
        bgWidth    = e.MeasureString(barChar.back, font, 0, 0, ww, wh).Width,
        bodyWidth  = e.MeasureString(barChar.body, font, 0, 0, ww, wh).Width;
        headWidth  = e.MeasureString(barChar.head, font, 0, 0, ww, wh).Width;

    // generate background string
    for (var i = 0, MAX = Math.ceil(ww / bgWidth); i < MAX; i++)
        background += barChar.back;

    // generate progress string
    if (pos > 4)
        for (var i = 0, MAX = Math.floor((pos - headWidth) / bodyWidth); i < MAX; i++)
            progress += barChar.body;
    else
        progress = "";

    // Draw frame background
    e.FillSolidRect(0, 0, ww, wh, color.frame);

    // Draw the background
    e.DrawString(background, font, color.background, 0, 0, ww, wh);

    // Draw the progress
    e.DrawString(progress, font, color.progress, 0, 0, ww, wh);

    // Draw the progress head
    if (pos > 0)
        e.DrawString(barChar.head, font, color.proghead,
            Math.floor((pos - headWidth) / bodyWidth) * bodyWidth + headWidth + 1, 0, ww, wh);
}

function on_mouse_lbtn_down(x, y)
{
    g_drag = 1;
}

function on_mouse_lbtn_up(x, y)
{
    on_mouse_move(x,y);
    g_drag = 0;
}

function on_mouse_move(x, y)
{
    if (g_drag)
        fb.PlaybackTime = x / window.Width * fb.PlaybackLength;
}

function on_mouse_wheel(delta)
{
	fb.PlaybackTime += delta;
}

function on_mouse_mbtn_down(x, y) {
    fb.PlayOrPause();
}

function on_playback_seek()
{
    window.Repaint();
}

function on_playback_time()
{
    window.Repaint();
}

function on_playback_stop()
{
    window.Repaint();
}